Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S0108768111054863/ck5044sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S0108768111054863/ck5044cbnsup2.hkl | |
Structure factor file (CIF format) https://doi.org/10.1107/S0108768111054863/ck5044ce-cbnsup3.hkl | |
Structure factor file (CIF format) https://doi.org/10.1107/S0108768111054863/ck5044cbnsup4.hkl | |
Structure factor file (CIF format) https://doi.org/10.1107/S0108768111054863/ck5044ce-cbnsup5.hkl | |
Portable Document Format (PDF) file https://doi.org/10.1107/S0108768111054863/ck5044sup6.pdf |
For both compounds, data collection: CrysAlis PRO, Oxford Diffraction Ltd., Version 1.171.34.9 (release 08-12-2009 CrysAlis171 .NET) (compiled Dec 8 2009,17:31:18); cell refinement: CrysAlis PRO, Oxford Diffraction Ltd., Version 1.171.34.9 (release 08-12-2009 CrysAlis171 .NET) (compiled Dec 8 2009,17:31:18); data reduction: CrysAlis PRO, Oxford Diffraction Ltd., Version 1.171.34.9 (release 08-12-2009 CrysAlis171 .NET) (compiled Dec 8 2009,17:31:18); program(s) used to solve structure: Jana2006; program(s) used to refine structure: Jana2006; molecular graphics: Diamond 3.0; software used to prepare material for publication: Jana2006.
Ba0.720Ca0.279Nb2O6 | Dx = 5.294 Mg m−3 |
Mr = 391.9 | Mo Kα radiation, λ = 0.71073 Å |
Tetragonal, X4bm† | Cell parameters from 34896 reflections |
q1 = 0.29420a* + 0.29420b*; q2 = -0.29420a* + 0.29420b* | θ = 2.9–26.4° |
a = 12.4529 (4) Å | µ = 10.58 mm−1 |
c = 7.9242 (6) Å | T = 295 K |
V = 1228.84 (11) Å3 | Elliptical, colourless |
Z = 10 | 0.19 × 0.18 × 0.12 mm |
F(000) = 1720 |
† Symmetry operations: (1) x1, x2, x3, x4, x5; (2) −x2, x1, x3, −x5, x4; (3) −x1+1/2, x2+1/2, x3, x5, x4; (4) −x1, −x2, x3, −x4, −x5; (5) −x2+1/2, −x1+1/2, x3, −x4, x5; (6) x2, −x1, x3, x5, −x4; (7) x1+1/2, −x2+1/2, x3, −x5, −x4; (8) x2+1/2, x1+1/2, x3, x4, −x5; (9) x1, x2, x3+1/2, x4+1/2, x5+1/2; (10) −x2, x1, x3+1/2, −x5+1/2, x4+1/2; (11) −x1+1/2, x2+1/2, x3+1/2, x5+1/2, x4+1/2; (12) −x1, −x2, x3+1/2, −x4+1/2, −x5+1/2; (13) −x2+1/2, −x1+1/2, x3+1/2, −x4+1/2, x5+1/2; (14) x2, −x1, x3+1/2, x5+1/2, −x4+1/2; (15) x1+1/2, −x2+1/2, x3+1/2, −x5+1/2, −x4+1/2; (16) x2+1/2, x1+1/2, x3+1/2, x4+1/2, −x5+1/2. |
Xcalibur, Sapphire2, large Be window diffractometer | 3291 independent reflections |
Radiation source: Enhance (Mo) X-ray Source | 2925 reflections with I > 3σ(I) |
Graphite monochromator | Rint = 0.025 |
Detector resolution: 8.2495 pixels mm-1 | θmax = 26.4°, θmin = 2.9° |
ω and π scans | h = −15→15 |
Absorption correction: analytical CrysAlis PRO, Oxford Diffraction Ltd., Version 1.171.34.9 (release 08-12-2009 CrysAlis171 .NET) (compiled Dec 8 2009,17:31:18) Analytical numeric absorption correction using a multifaceted crystal model based on expressions derived by R.C. Clark & J.S. Reid. (Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897) | k = −15→15 |
Tmin = 0.255, Tmax = 0.426 | l = −9→9 |
34896 measured reflections |
Refinement on F | Weighting scheme based on measured s.u.'s w = 1/(σ2(F) + 0.0001F2) |
R[F2 > 2σ(F2)] = 0.028 | (Δ/σ)max = 0.029 |
wR(F2) = 0.041 | Δρmax = 0.00 e Å−3 |
S = 1.65 | Δρmin = −1.00 e Å−3 |
3291 reflections | Extinction correction: B-C type 1 Gaussian isotropic (Becker & Coppens, 1974) |
191 parameters | Extinction coefficient: 630 (30) |
2 restraints | Absolute structure: 1596 of Friedel pairs used in the refinement |
7 constraints | Absolute structure parameter: 0.49 (2) |
Ba0.720Ca0.279Nb2O6 | V = 1228.84 (11) Å3 |
Mr = 391.9 | Z = 10 |
Tetragonal, X4bm† | Mo Kα radiation |
q1 = 0.29420a* + 0.29420b*; q2 = -0.29420a* + 0.29420b* | µ = 10.58 mm−1 |
a = 12.4529 (4) Å | T = 295 K |
c = 7.9242 (6) Å | 0.19 × 0.18 × 0.12 mm |
† Symmetry operations: (1) x1, x2, x3, x4, x5; (2) −x2, x1, x3, −x5, x4; (3) −x1+1/2, x2+1/2, x3, x5, x4; (4) −x1, −x2, x3, −x4, −x5; (5) −x2+1/2, −x1+1/2, x3, −x4, x5; (6) x2, −x1, x3, x5, −x4; (7) x1+1/2, −x2+1/2, x3, −x5, −x4; (8) x2+1/2, x1+1/2, x3, x4, −x5; (9) x1, x2, x3+1/2, x4+1/2, x5+1/2; (10) −x2, x1, x3+1/2, −x5+1/2, x4+1/2; (11) −x1+1/2, x2+1/2, x3+1/2, x5+1/2, x4+1/2; (12) −x1, −x2, x3+1/2, −x4+1/2, −x5+1/2; (13) −x2+1/2, −x1+1/2, x3+1/2, −x4+1/2, x5+1/2; (14) x2, −x1, x3+1/2, x5+1/2, −x4+1/2; (15) x1+1/2, −x2+1/2, x3+1/2, −x5+1/2, −x4+1/2; (16) x2+1/2, x1+1/2, x3+1/2, x4+1/2, −x5+1/2. |
Xcalibur, Sapphire2, large Be window diffractometer | 3291 independent reflections |
Absorption correction: analytical CrysAlis PRO, Oxford Diffraction Ltd., Version 1.171.34.9 (release 08-12-2009 CrysAlis171 .NET) (compiled Dec 8 2009,17:31:18) Analytical numeric absorption correction using a multifaceted crystal model based on expressions derived by R.C. Clark & J.S. Reid. (Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897) | 2925 reflections with I > 3σ(I) |
Tmin = 0.255, Tmax = 0.426 | Rint = 0.025 |
34896 measured reflections |
R[F2 > 2σ(F2)] = 0.028 | 2 restraints |
wR(F2) = 0.041 | Δρmax = 0.00 e Å−3 |
S = 1.65 | Δρmin = −1.00 e Å−3 |
3291 reflections | Absolute structure: 1596 of Friedel pairs used in the refinement |
191 parameters | Absolute structure parameter: 0.49 (2) |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Ba2 | 0.171994 (15) | 0.671994 (15) | 0.24577 | 0.01629 (9) | 0.8781 |
Ca2 | 0.171994 (15) | 0.671994 (15) | 0.24577 | 0.01629 (9) | 0.060 (3) |
Ca1 | 0 | 0 | 0.2541 (5) | 0.0113 (5) | 0.579 (7) |
Ba1 | 0 | 0 | 0.2541 (5) | 0.0113 (5) | 0.0359 |
Nb1 | 0 | 0.5 | 0.00597 (15) | 0.00596 (12) | |
Nb2 | 0.073295 (19) | 0.209981 (18) | 0.00107 (10) | 0.00681 (10) | |
O1 | 0.21533 (17) | 0.28467 (17) | −0.0166 (7) | 0.0101 (7) | |
O2 | 0.1387 (2) | 0.06880 (18) | −0.0257 (5) | 0.0215 (7) | |
O3 | −0.00611 (17) | 0.34347 (16) | −0.0211 (5) | 0.0132 (6) | |
O4 | 0 | 0.5 | 0.2336 (9) | 0.0184 (10) | |
O5 | 0.07369 (16) | 0.20290 (17) | 0.2304 (4) | 0.0188 (7) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ba2 | 0.01845 (15) | 0.01845 (15) | 0.01198 (19) | −0.00992 (10) | 0.00065 (18) | 0.00065 (18) |
Ca2 | 0.01845 (15) | 0.01845 (15) | 0.01198 (19) | −0.00992 (10) | 0.00065 (18) | 0.00065 (18) |
Ca1 | 0.0101 (7) | 0.0101 (7) | 0.0139 (10) | 0 | 0 | 0 |
Ba1 | 0.0101 (7) | 0.0101 (7) | 0.0139 (10) | 0 | 0 | 0 |
Nb1 | 0.00588 (17) | 0.00588 (17) | 0.0061 (3) | −0.00086 (16) | 0 | 0 |
Nb2 | 0.00640 (16) | 0.00638 (16) | 0.00764 (19) | 0.00108 (8) | −0.0005 (2) | −0.0004 (2) |
O1 | 0.0094 (8) | 0.0094 (8) | 0.0115 (16) | −0.0014 (10) | 0.0017 (12) | −0.0017 (12) |
O2 | 0.0233 (12) | 0.0153 (11) | 0.0258 (14) | 0.0095 (9) | −0.0011 (13) | −0.0027 (12) |
O3 | 0.0117 (10) | 0.0098 (10) | 0.0180 (11) | 0.0027 (7) | −0.0035 (12) | −0.0014 (11) |
O4 | 0.0228 (12) | 0.0228 (12) | 0.010 (2) | −0.0025 (15) | 0 | 0 |
O5 | 0.0226 (11) | 0.0233 (11) | 0.0106 (14) | −0.0017 (8) | 0.0013 (13) | 0.0023 (13) |
Average | Minimum | Maximum | |
Ba2—O1i | 2.861 (6) | 2.832 (6) | 2.919 (6) |
Ba2—O1ii | 2.729 (6) | 2.705 (6) | 2.772 (6) |
Ba2—O2i | 3.469 (7) | 3.375 (7) | 3.511 (7) |
Ba2—O2ii | 3.234 (7) | 3.151 (7) | 3.340 (7) |
Ba2—O2iii | 3.459 (7) | 3.372 (7) | 3.511 (7) |
Ba2—O2iv | 3.262 (7) | 3.182 (7) | 3.306 (7) |
Ba2—O3v | 2.966 (6) | 2.837 (6) | 3.102 (6) |
Ba2—O3vi | 2.782 (6) | 2.709 (6) | 2.868 (6) |
Ba2—O3vii | 2.917 (6) | 2.821 (6) | 3.117 (6) |
Ba2—O3viii | 2.751 (6) | 2.688 (6) | 2.886 (6) |
Ba2—O4 | 3.068 (4) | 2.892 (4) | 3.174 (4) |
Ba2—O5i | 3.257 (5) | 2.850 (5) | 3.536 (5) |
Ba2—O5v | 3.357 (5) | 3.106 (5) | 3.770 (5) |
Ba2—O5vii | 3.551 (5) | 3.098 (5) | 3.779 (5) |
Ba2—O5iii | 3.155 (5) | 3.079 (5) | 3.309 (5) |
Ca1—O2 | 2.951 (7) | 2.617 (7) | 3.266 (8) |
Ca1—O2ix | 2.612 (7) | 2.486 (7) | 2.755 (7) |
Ca1—O2x | 2.951 (7) | 2.617 (7) | 3.266 (8) |
Ca1—O2xi | 2.612 (7) | 2.486 (7) | 2.755 (7) |
Ca1—O2xii | 2.951 (7) | 2.617 (7) | 3.266 (8) |
Ca1—O2xiii | 2.612 (7) | 2.486 (7) | 2.755 (7) |
Ca1—O2xiv | 2.951 (7) | 2.617 (7) | 3.266 (8) |
Ca1—O2xv | 2.612 (7) | 2.486 (7) | 2.755 (7) |
Ca1—O5 | 2.699 (5) | 2.663 (5) | 2.758 (5) |
Ca1—O5x | 2.699 (5) | 2.663 (5) | 2.758 (5) |
Ca1—O5xii | 2.699 (5) | 2.663 (5) | 2.758 (5) |
Ca1—O5xiv | 2.699 (5) | 2.663 (5) | 2.758 (5) |
Nb1—O3 | 1.967 (6) | 1.956 (6) | 1.978 (6) |
Nb1—O3v | 1.971 (6) | 1.956 (6) | 1.979 (6) |
Nb1—O3vii | 1.971 (6) | 1.955 (6) | 1.978 (6) |
Nb1—O3xvi | 1.970 (6) | 1.957 (6) | 1.979 (6) |
Nb1—O4 | 1.820 (9) | 1.807 (9) | 1.829 (9) |
Nb1—O4xvii | 2.171 (9) | 2.167 (9) | 2.176 (9) |
Nb2—O1 | 2.003 (6) | 1.994 (6) | 2.024 (6) |
Nb2—O2 | 1.965 (7) | 1.945 (7) | 1.989 (7) |
Nb2—O2x | 2.002 (7) | 1.986 (7) | 2.024 (7) |
Nb2—O3 | 1.950 (6) | 1.939 (6) | 1.961 (6) |
Nb2—O5 | 1.836 (8) | 1.813 (8) | 1.879 (8) |
Nb2—O5xvii | 2.170 (8) | 2.145 (8) | 2.210 (8) |
O1—O2 | 2.857 (9) | 2.809 (9) | 2.915 (9) |
O1—O2vii | 2.849 (9) | 2.827 (9) | 2.910 (9) |
O1—O3 | 2.858 (9) | 2.832 (9) | 2.894 (9) |
O1—O3vii | 2.861 (9) | 2.825 (9) | 2.895 (9) |
O1—O5 | 2.844 (9) | 2.792 (9) | 2.938 (9) |
O1—O5xvii | 2.862 (9) | 2.797 (9) | 2.978 (9) |
O1—O5vii | 2.831 (9) | 2.795 (9) | 2.881 (9) |
O1—O5xviii | 2.882 (9) | 2.829 (9) | 2.911 (9) |
O2—O2xvii | 3.946 (9) | 3.310 (9) | 4.628 (9) |
O2—O2ix | 3.984 (9) | 3.310 (9) | 4.628 (9) |
O2—O2x | 2.769 (10) | 2.713 (10) | 2.819 (10) |
O2—O2xiv | 2.769 (10) | 2.713 (10) | 2.819 (10) |
O2—O3xiv | 2.666 (9) | 2.610 (9) | 2.729 (9) |
O2—O5 | 2.771 (9) | 2.749 (9) | 2.832 (9) |
O2—O5xvii | 2.711 (9) | 2.676 (9) | 2.751 (9) |
O2—O5xiv | 2.832 (9) | 2.805 (9) | 2.877 (9) |
O2—O5xix | 2.768 (9) | 2.726 (9) | 2.852 (9) |
O3—O3xvii | 3.990 (8) | 3.486 (8) | 4.439 (8) |
O3—O3ix | 3.935 (8) | 3.486 (8) | 4.439 (8) |
O3—O3vii | 2.880 (9) | 2.842 (9) | 2.899 (9) |
O3—O3xvi | 2.663 (9) | 2.661 (9) | 2.668 (9) |
O3—O4 | 2.824 (9) | 2.807 (9) | 2.830 (9) |
O3—O4xvii | 2.764 (9) | 2.740 (9) | 2.807 (9) |
O3—O5 | 2.849 (9) | 2.793 (9) | 2.956 (8) |
O3—O5xvii | 2.837 (9) | 2.783 (9) | 2.932 (8) |
O4—O5 | 3.873 (6) | 3.335 (6) | 4.321 (6) |
O4—O5v | 3.769 (6) | 3.318 (6) | 4.309 (6) |
O4—O5vii | 3.986 (6) | 3.325 (6) | 4.304 (6) |
O4—O5xvi | 3.655 (6) | 3.327 (6) | 4.324 (6) |
O5—O5x | 3.787 (7) | 3.195 (7) | 4.409 (7) |
O5—O5xiv | 3.787 (7) | 3.195 (7) | 4.409 (7) |
O1i—Ba2—O1ii | 89.15 (18) | 86.54 (18) | 92.95 (18) |
O1i—Ba2—O2i | 52.80 (16) | 51.62 (16) | 53.94 (17) |
O1i—Ba2—O2ii | 103.15 (17) | 98.77 (17) | 109.11 (17) |
O1i—Ba2—O2iii | 52.73 (16) | 52.23 (16) | 53.44 (17) |
O1i—Ba2—O2iv | 105.01 (17) | 100.80 (17) | 107.07 (17) |
O1i—Ba2—O3v | 81.96 (17) | 81.09 (17) | 82.59 (17) |
O1i—Ba2—O3vi | 152.24 (18) | 146.83 (18) | 154.83 (18) |
O1i—Ba2—O3vii | 82.43 (17) | 79.56 (17) | 83.92 (18) |
O1i—Ba2—O3viii | 149.74 (18) | 146.69 (18) | 155.56 (17) |
O1i—Ba2—O4 | 132.18 (19) | 130.34 (18) | 133.45 (19) |
O1i—Ba2—O5i | 54.78 (18) | 52.42 (17) | 58.02 (19) |
O1i—Ba2—O5v | 101.24 (17) | 97.68 (16) | 104.31 (17) |
O1i—Ba2—O5vii | 99.88 (16) | 98.05 (16) | 103.71 (17) |
O1i—Ba2—O5iii | 55.87 (18) | 53.55 (17) | 57.11 (18) |
O1ii—Ba2—O2i | 104.56 (17) | 100.27 (17) | 111.00 (17) |
O1ii—Ba2—O2ii | 56.21 (17) | 55.20 (17) | 57.40 (18) |
O1ii—Ba2—O2iii | 106.44 (17) | 103.01 (17) | 108.12 (17) |
O1ii—Ba2—O2iv | 56.23 (17) | 55.47 (17) | 57.21 (17) |
O1ii—Ba2—O3v | 152.39 (18) | 148.48 (18) | 154.24 (18) |
O1ii—Ba2—O3vi | 87.97 (18) | 85.83 (18) | 89.73 (18) |
O1ii—Ba2—O3vii | 150.44 (18) | 147.64 (18) | 155.77 (17) |
O1ii—Ba2—O3viii | 88.89 (18) | 83.97 (18) | 91.41 (18) |
O1ii—Ba2—O4 | 138.67 (19) | 136.71 (19) | 140.0 (2) |
O1ii—Ba2—O5i | 56.59 (18) | 54.25 (17) | 59.85 (19) |
O1ii—Ba2—O5v | 104.84 (17) | 100.95 (16) | 108.28 (18) |
O1ii—Ba2—O5vii | 103.37 (17) | 101.27 (16) | 107.80 (18) |
O1ii—Ba2—O5iii | 57.55 (18) | 55.81 (18) | 58.49 (18) |
O2i—Ba2—O2ii | 71.48 (15) | 64.32 (16) | 80.76 (15) |
O2i—Ba2—O2iii | 96.58 (15) | 94.81 (15) | 99.08 (15) |
O2i—Ba2—O2iv | 153.05 (16) | 151.81 (16) | 153.60 (16) |
O2i—Ba2—O3v | 90.58 (16) | 90.08 (16) | 90.70 (15) |
O2i—Ba2—O3vi | 152.56 (17) | 151.40 (16) | 155.82 (17) |
O2i—Ba2—O3vii | 48.61 (16) | 47.31 (16) | 49.77 (16) |
O2i—Ba2—O3viii | 98.76 (16) | 95.03 (16) | 106.28 (16) |
O2i—Ba2—O4 | 102.32 (17) | 98.88 (16) | 104.56 (17) |
O2i—Ba2—O5i | 48.19 (16) | 46.57 (15) | 51.15 (18) |
O2i—Ba2—O5v | 139.92 (17) | 135.28 (16) | 143.11 (18) |
O2i—Ba2—O5vii | 47.42 (15) | 45.55 (15) | 51.24 (17) |
O2i—Ba2—O5iii | 106.08 (16) | 103.14 (16) | 107.61 (16) |
O2ii—Ba2—O2iii | 152.68 (16) | 150.56 (17) | 155.01 (16) |
O2ii—Ba2—O2iv | 104.75 (16) | 103.03 (16) | 107.85 (16) |
O2ii—Ba2—O3v | 150.62 (17) | 146.95 (16) | 155.02 (17) |
O2ii—Ba2—O3vi | 97.89 (17) | 97.00 (17) | 99.48 (17) |
O2ii—Ba2—O3vii | 98.11 (16) | 94.92 (16) | 104.41 (16) |
O2ii—Ba2—O3viii | 52.13 (17) | 51.42 (17) | 52.51 (18) |
O2ii—Ba2—O4 | 105.19 (17) | 102.27 (17) | 107.21 (18) |
O2ii—Ba2—O5i | 48.83 (17) | 47.29 (16) | 51.16 (18) |
O2ii—Ba2—O5v | 148.47 (17) | 143.96 (16) | 152.13 (18) |
O2ii—Ba2—O5vii | 47.60 (16) | 45.81 (15) | 51.36 (17) |
O2ii—Ba2—O5iii | 109.78 (16) | 107.20 (16) | 111.15 (16) |
O2iii—Ba2—O2iv | 74.94 (15) | 65.74 (16) | 79.45 (15) |
O2iii—Ba2—O3v | 48.25 (16) | 47.74 (16) | 49.28 (16) |
O2iii—Ba2—O3vi | 102.28 (16) | 95.22 (16) | 106.04 (16) |
O2iii—Ba2—O3vii | 90.79 (16) | 89.78 (16) | 91.45 (16) |
O2iii—Ba2—O3viii | 154.09 (17) | 150.98 (16) | 156.93 (17) |
O2iii—Ba2—O4 | 100.97 (17) | 99.77 (17) | 103.60 (17) |
O2iii—Ba2—O5i | 105.12 (16) | 103.42 (15) | 107.33 (16) |
O2iii—Ba2—O5v | 48.97 (16) | 45.73 (15) | 51.10 (17) |
O2iii—Ba2—O5vii | 138.17 (16) | 136.16 (16) | 142.10 (18) |
O2iii—Ba2—O5iii | 49.15 (17) | 48.19 (16) | 49.70 (17) |
O2iv—Ba2—O3v | 101.24 (16) | 95.05 (16) | 104.41 (16) |
O2iv—Ba2—O3vi | 51.82 (17) | 51.50 (17) | 52.38 (18) |
O2iv—Ba2—O3vii | 153.03 (17) | 146.70 (16) | 155.88 (17) |
O2iv—Ba2—O3viii | 98.80 (17) | 96.50 (17) | 99.95 (17) |
O2iv—Ba2—O4 | 103.96 (17) | 102.75 (17) | 106.63 (18) |
O2iv—Ba2—O5i | 109.02 (16) | 107.41 (15) | 110.96 (17) |
O2iv—Ba2—O5v | 49.21 (16) | 45.84 (15) | 51.36 (17) |
O2iv—Ba2—O5vii | 146.78 (17) | 144.36 (16) | 151.51 (18) |
O2iv—Ba2—O5iii | 49.50 (17) | 48.72 (16) | 49.96 (17) |
O3v—Ba2—O3vi | 88.13 (16) | 78.10 (17) | 95.71 (16) |
O3v—Ba2—O3vii | 53.84 (17) | 51.83 (16) | 54.85 (17) |
O3v—Ba2—O3viii | 111.20 (17) | 109.73 (17) | 114.12 (17) |
O3v—Ba2—O4 | 55.66 (17) | 55.00 (17) | 57.00 (18) |
O3v—Ba2—O5i | 131.83 (18) | 128.61 (16) | 136.25 (19) |
O3v—Ba2—O5v | 52.57 (17) | 49.41 (16) | 54.10 (17) |
O3v—Ba2—O5vii | 103.56 (16) | 100.88 (15) | 106.38 (17) |
O3v—Ba2—O5iii | 96.79 (17) | 96.13 (17) | 97.69 (16) |
O3vi—Ba2—O3vii | 111.75 (17) | 108.43 (17) | 115.42 (17) |
O3vi—Ba2—O3viii | 57.54 (18) | 56.06 (17) | 58.30 (18) |
O3vi—Ba2—O4 | 56.12 (18) | 55.08 (18) | 58.00 (18) |
O3vi—Ba2—O5i | 139.97 (18) | 135.65 (17) | 145.6 (2) |
O3vi—Ba2—O5v | 53.57 (17) | 49.50 (16) | 55.80 (18) |
O3vi—Ba2—O5vii | 107.28 (16) | 105.14 (16) | 109.81 (17) |
O3vi—Ba2—O5iii | 100.46 (17) | 100.28 (17) | 100.86 (17) |
O3vii—Ba2—O3viii | 84.38 (17) | 78.97 (17) | 94.77 (16) |
O3vii—Ba2—O4 | 56.17 (18) | 54.25 (17) | 57.78 (18) |
O3vii—Ba2—O5i | 96.28 (17) | 95.04 (16) | 98.75 (17) |
O3vii—Ba2—O5v | 104.56 (16) | 100.50 (15) | 106.84 (17) |
O3vii—Ba2—O5vii | 51.05 (16) | 49.47 (16) | 53.97 (17) |
O3vii—Ba2—O5iii | 133.49 (18) | 129.01 (17) | 135.88 (18) |
O3viii—Ba2—O4 | 56.28 (18) | 54.70 (18) | 58.50 (18) |
O3viii—Ba2—O5i | 100.07 (17) | 99.17 (17) | 101.89 (17) |
O3viii—Ba2—O5v | 108.34 (17) | 104.70 (16) | 110.35 (17) |
O3viii—Ba2—O5vii | 51.58 (17) | 49.49 (16) | 55.65 (18) |
O3viii—Ba2—O5iii | 142.03 (18) | 136.18 (18) | 145.10 (19) |
O4—Ba2—O5i | 142.10 (12) | 138.47 (12) | 145.00 (11) |
O4—Ba2—O5v | 71.44 (11) | 67.06 (12) | 76.17 (10) |
O4—Ba2—O5vii | 73.41 (11) | 66.89 (12) | 76.35 (10) |
O4—Ba2—O5iii | 140.32 (12) | 137.65 (12) | 145.82 (12) |
O5i—Ba2—O5v | 145.94 (12) | 144.91 (12) | 147.36 (12) |
O5i—Ba2—O5vii | 68.79 (12) | 66.61 (11) | 73.79 (13) |
O5i—Ba2—O5iii | 77.12 (12) | 73.07 (12) | 79.07 (12) |
O5v—Ba2—O5vii | 144.72 (12) | 140.17 (12) | 146.99 (12) |
O5v—Ba2—O5iii | 68.97 (12) | 66.94 (13) | 72.66 (12) |
O5vii—Ba2—O5iii | 145.79 (12) | 145.24 (13) | 146.67 (13) |
O2—Ca1—O2ix | 91.10 (19) | 80.8 (2) | 100.11 (18) |
O2—Ca1—O2x | 55.4 (2) | 55.0 (2) | 56.0 (2) |
O2—Ca1—O2xi | 120.3 (2) | 116.4 (2) | 122.9 (2) |
O2—Ca1—O2xii | 82.1 (2) | 77.5 (2) | 87.7 (3) |
O2—Ca1—O2xiii | 173.2 (2) | 168.5 (3) | 177.6 (2) |
O2—Ca1—O2xiv | 55.4 (2) | 55.0 (2) | 56.0 (2) |
O2—Ca1—O2xv | 120.2 (2) | 116.35 (19) | 122.9 (2) |
O2—Ca1—O5 | 58.4 (2) | 55.7 (2) | 61.7 (2) |
O2—Ca1—O5x | 113.2 (2) | 110.1 (2) | 116.1 (2) |
O2—Ca1—O5xii | 114.7 (2) | 111.6 (2) | 117.7 (2) |
O2—Ca1—O5xiv | 60.0 (2) | 56.3 (2) | 64.2 (2) |
O2ix—Ca1—O2x | 120.2 (2) | 116.4 (2) | 122.9 (2) |
O2ix—Ca1—O2xi | 63.7 (2) | 62.7 (2) | 64.8 (2) |
O2ix—Ca1—O2xii | 173.2 (2) | 168.5 (3) | 177.6 (2) |
O2ix—Ca1—O2xiii | 95.7 (3) | 82.3 (2) | 110.6 (3) |
O2ix—Ca1—O2xiv | 120.3 (2) | 116.4 (2) | 122.9 (2) |
O2ix—Ca1—O2xv | 63.7 (2) | 62.7 (2) | 64.8 (2) |
O2ix—Ca1—O5 | 61.3 (2) | 60.4 (2) | 63.0 (2) |
O2ix—Ca1—O5x | 123.2 (2) | 120.2 (2) | 125.2 (2) |
O2ix—Ca1—O5xii | 125.1 (2) | 122.5 (2) | 126.2 (2) |
O2ix—Ca1—O5xiv | 63.1 (2) | 61.6 (2) | 64.5 (2) |
O2x—Ca1—O2xi | 91.10 (19) | 80.8 (2) | 100.11 (18) |
O2x—Ca1—O2xii | 55.4 (2) | 55.0 (2) | 56.0 (2) |
O2x—Ca1—O2xiii | 120.3 (2) | 116.4 (2) | 122.9 (2) |
O2x—Ca1—O2xiv | 82.1 (2) | 77.5 (2) | 87.7 (3) |
O2x—Ca1—O2xv | 173.2 (2) | 168.5 (3) | 177.6 (2) |
O2x—Ca1—O5 | 60.0 (2) | 56.3 (2) | 64.2 (2) |
O2x—Ca1—O5x | 58.4 (2) | 55.7 (2) | 61.7 (2) |
O2x—Ca1—O5xii | 113.2 (2) | 110.1 (2) | 116.1 (2) |
O2x—Ca1—O5xiv | 114.7 (2) | 111.6 (2) | 117.7 (2) |
O2xi—Ca1—O2xii | 120.2 (2) | 116.4 (2) | 122.9 (2) |
O2xi—Ca1—O2xiii | 63.7 (2) | 62.7 (2) | 64.8 (2) |
O2xi—Ca1—O2xiv | 173.2 (2) | 168.5 (3) | 177.6 (2) |
O2xi—Ca1—O2xv | 95.7 (3) | 82.3 (2) | 110.6 (3) |
O2xi—Ca1—O5 | 63.1 (2) | 61.6 (2) | 64.5 (2) |
O2xi—Ca1—O5x | 61.3 (2) | 60.4 (2) | 63.0 (2) |
O2xi—Ca1—O5xii | 123.2 (2) | 120.2 (2) | 125.2 (2) |
O2xi—Ca1—O5xiv | 125.1 (2) | 122.5 (2) | 126.2 (2) |
O2xii—Ca1—O2xiii | 91.10 (19) | 80.8 (2) | 100.11 (18) |
O2xii—Ca1—O2xiv | 55.4 (2) | 55.0 (2) | 56.0 (2) |
O2xii—Ca1—O2xv | 120.3 (2) | 116.4 (2) | 122.9 (2) |
O2xii—Ca1—O5 | 114.7 (2) | 111.6 (2) | 117.7 (2) |
O2xii—Ca1—O5x | 60.0 (2) | 56.3 (2) | 64.2 (2) |
O2xii—Ca1—O5xii | 58.4 (2) | 55.7 (2) | 61.7 (2) |
O2xii—Ca1—O5xiv | 113.2 (2) | 110.1 (2) | 116.1 (2) |
O2xiii—Ca1—O2xiv | 120.2 (2) | 116.4 (2) | 122.9 (2) |
O2xiii—Ca1—O2xv | 63.7 (2) | 62.7 (2) | 64.8 (2) |
O2xiii—Ca1—O5 | 125.1 (2) | 122.5 (2) | 126.2 (2) |
O2xiii—Ca1—O5x | 63.1 (2) | 61.6 (2) | 64.5 (2) |
O2xiii—Ca1—O5xii | 61.3 (2) | 60.4 (2) | 63.0 (2) |
O2xiii—Ca1—O5xiv | 123.2 (2) | 120.2 (2) | 125.2 (2) |
O2xiv—Ca1—O2xv | 91.10 (19) | 80.8 (2) | 100.11 (18) |
O2xiv—Ca1—O5 | 113.2 (2) | 110.1 (2) | 116.1 (2) |
O2xiv—Ca1—O5x | 114.7 (2) | 111.6 (2) | 117.7 (2) |
O2xiv—Ca1—O5xii | 60.0 (2) | 56.3 (2) | 64.2 (2) |
O2xiv—Ca1—O5xiv | 58.4 (2) | 55.7 (2) | 61.7 (2) |
O2xv—Ca1—O5 | 123.2 (2) | 120.2 (2) | 125.2 (2) |
O2xv—Ca1—O5x | 125.1 (2) | 122.5 (2) | 126.2 (2) |
O2xv—Ca1—O5xii | 63.1 (2) | 61.6 (2) | 64.5 (2) |
O2xv—Ca1—O5xiv | 61.3 (2) | 60.4 (2) | 63.0 (2) |
O5—Ca1—O5x | 89.71 (15) | 71.65 (15) | 107.78 (15) |
O5—Ca1—O5xii | 171.9 (3) | 171.5 (3) | 172.7 (3) |
O5—Ca1—O5xiv | 89.71 (15) | 71.65 (15) | 107.78 (15) |
O5x—Ca1—O5xii | 89.71 (15) | 71.65 (15) | 107.78 (15) |
O5x—Ca1—O5xiv | 171.9 (3) | 171.5 (3) | 172.7 (3) |
O5xii—Ca1—O5xiv | 89.71 (15) | 71.65 (15) | 107.78 (15) |
O3—Nb1—O3v | 167.4 (2) | 167.1 (2) | 167.7 (2) |
O3—Nb1—O3vii | 94.0 (3) | 92.1 (3) | 94.9 (3) |
O3—Nb1—O3xvi | 85.1 (3) | 85.0 (3) | 85.2 (3) |
O3—Nb1—O4 | 96.4 (3) | 95.7 (3) | 96.7 (3) |
O3—Nb1—O4xvii | 83.7 (2) | 82.6 (2) | 84.9 (2) |
O3v—Nb1—O3vii | 85.1 (3) | 84.9 (3) | 85.3 (3) |
O3v—Nb1—O3xvi | 93.1 (3) | 92.1 (3) | 95.0 (3) |
O3v—Nb1—O4 | 96.2 (3) | 96.0 (3) | 96.5 (3) |
O3v—Nb1—O4xvii | 83.8 (2) | 82.9 (2) | 84.5 (2) |
O3vii—Nb1—O3xvi | 167.4 (2) | 167.1 (2) | 167.8 (2) |
O3vii—Nb1—O4 | 96.2 (3) | 96.0 (3) | 96.4 (3) |
O3vii—Nb1—O4xvii | 84.0 (2) | 82.9 (2) | 84.6 (2) |
O3xvi—Nb1—O4 | 96.3 (3) | 95.7 (3) | 96.8 (3) |
O3xvi—Nb1—O4xvii | 83.4 (2) | 82.7 (2) | 84.8 (2) |
O4—Nb1—O4xvii | 179.1 (2) | 179.0 (2) | 179.1 (2) |
O1—Nb2—O2 | 92.1 (3) | 89.6 (3) | 93.6 (3) |
O1—Nb2—O2x | 169.3 (3) | 164.8 (3) | 174.8 (3) |
O1—Nb2—O3 | 92.6 (3) | 91.9 (3) | 93.4 (3) |
O1—Nb2—O5 | 95.5 (2) | 92.1 (2) | 98.8 (2) |
O1—Nb2—O5xvii | 86.5 (2) | 83.2 (2) | 90.0 (2) |
O2—Nb2—O2x | 88.5 (3) | 87.0 (3) | 89.5 (3) |
O2—Nb2—O3 | 167.2 (3) | 165.0 (2) | 169.0 (3) |
O2—Nb2—O5 | 93.5 (2) | 92.5 (2) | 94.1 (2) |
O2—Nb2—O5xvii | 81.8 (2) | 81.5 (2) | 82.4 (2) |
O2x—Nb2—O3 | 84.9 (3) | 82.0 (3) | 86.7 (3) |
O2x—Nb2—O5 | 95.0 (2) | 93.0 (2) | 96.0 (2) |
O2x—Nb2—O5xvii | 83.0 (2) | 82.3 (2) | 84.8 (2) |
O3—Nb2—O5 | 97.6 (2) | 94.7 (2) | 100.6 (2) |
O3—Nb2—O5xvii | 86.9 (2) | 83.5 (2) | 90.1 (2) |
O5—Nb2—O5xvii | 174.9 (2) | 174.7 (2) | 175.2 (2) |
Ba2xx—O1—Ba2xxi | 89.65 (18) | 88.70 (18) | 90.79 (18) |
Ba2xx—O1—Nb2 | 99.2 (2) | 92.2 (2) | 105.5 (3) |
Ba2xx—O1—Nb2vii | 97.9 (2) | 95.9 (2) | 101.6 (2) |
Ba2xxi—O1—Nb2 | 104.6 (3) | 101.4 (2) | 108.6 (3) |
Ba2xxi—O1—Nb2vii | 105.3 (3) | 103.8 (2) | 106.1 (3) |
Nb2—O1—Nb2vii | 144.7 (3) | 142.5 (3) | 146.4 (3) |
Nb2—O1—Ca2xx | 99.2 (2) | 92.2 (2) | 105.5 (3) |
Nb2—O1—Ca2xxi | 104.6 (3) | 101.4 (2) | 108.6 (3) |
Nb2vii—O1—Ca2xx | 97.9 (2) | 95.9 (2) | 101.6 (2) |
Nb2vii—O1—Ca2xxi | 105.3 (3) | 103.8 (2) | 106.1 (3) |
Ca2xx—O1—Ca2xxi | 89.65 (18) | 88.70 (18) | 90.79 (18) |
Ba2xx—O2—Ba2xxi | 72.62 (14) | 70.42 (13) | 74.23 (15) |
Ba2xx—O2—Ca1 | 92.47 (17) | 83.75 (15) | 101.6 (2) |
Ba2xx—O2—Ca1xvii | 171.8 (3) | 163.3 (2) | 176.2 (3) |
Ba2xx—O2—Ba1 | 92.47 (17) | 83.75 (15) | 101.6 (2) |
Ba2xx—O2—Ba1xvii | 171.8 (3) | 163.3 (2) | 176.2 (3) |
Ba2xx—O2—Nb2 | 82.7 (2) | 78.0 (2) | 86.6 (2) |
Ba2xx—O2—Nb2xiv | 87.3 (2) | 82.3 (2) | 91.3 (2) |
Ba2xx—O2—Ca2xxi | 72.62 (14) | 70.42 (13) | 74.23 (15) |
Ba2xxi—O2—Ca1 | 165.0 (2) | 157.9 (2) | 171.9 (3) |
Ba2xxi—O2—Ca1xvii | 104.1 (2) | 92.95 (18) | 116.0 (2) |
Ba2xxi—O2—Ba1 | 165.0 (2) | 157.9 (2) | 171.9 (3) |
Ba2xxi—O2—Ba1xvii | 104.1 (2) | 92.95 (18) | 116.0 (2) |
Ba2xxi—O2—Nb2 | 90.5 (2) | 83.0 (2) | 96.6 (2) |
Ba2xxi—O2—Nb2xiv | 95.1 (2) | 87.4 (2) | 101.5 (3) |
Ba2xxi—O2—Ca2xx | 72.62 (14) | 70.42 (13) | 74.23 (15) |
Ba2xxi—O2—Ca2xxi | 0.0 (5) | 0.0 (5) | 0.0 (5) |
Ca1—O2—Ca1xvii | 90.8 (2) | 85.9 (2) | 95.0 (2) |
Ca1—O2—Ba1 | 0.0 (5) | 0.0 (5) | 0.0 (5) |
Ca1—O2—Ba1xvii | 90.8 (2) | 85.9 (2) | 95.0 (2) |
Ca1—O2—Nb2 | 85.8 (2) | 76.7 (2) | 95.6 (3) |
Ca1—O2—Nb2xiv | 85.2 (2) | 76.82 (19) | 94.0 (2) |
Ca1xvii—O2—Nb2 | 94.8 (3) | 90.2 (2) | 97.9 (3) |
Ca1xvii—O2—Nb2xiv | 93.9 (3) | 89.2 (2) | 97.0 (3) |
Nb2—O2—Nb2xiv | 163.3 (4) | 148.5 (3) | 170.4 (4) |
Nb2—O2—Ca2xx | 82.7 (2) | 78.0 (2) | 86.6 (2) |
Nb2—O2—Ca2xxi | 90.5 (2) | 83.0 (2) | 96.6 (2) |
Ba2v—O3—Ba2xxii | 87.16 (17) | 85.94 (17) | 87.87 (18) |
Ba2v—O3—Nb1 | 90.5 (2) | 86.16 (19) | 94.7 (2) |
Ba2v—O3—Nb2 | 104.4 (2) | 94.4 (2) | 112.7 (2) |
Ba2xxii—O3—Nb1 | 99.8 (2) | 96.1 (2) | 102.4 (2) |
Ba2xxii—O3—Nb2 | 111.1 (2) | 106.1 (2) | 117.4 (3) |
Nb1—O3—Nb2 | 144.3 (3) | 140.2 (3) | 146.1 (4) |
Ba2—O4—Ba2v | 174.1 (2) | 173.9 (2) | 174.2 (2) |
Ba2—O4—Nb1 | 90.4 (2) | 88.01 (19) | 95.1 (2) |
Ba2—O4—Nb1ix | 87.02 (19) | 84.97 (18) | 91.0 (2) |
Ba2v—O4—Nb1 | 92.7 (2) | 87.89 (19) | 95.3 (2) |
Ba2v—O4—Nb1ix | 88.9 (2) | 85.09 (18) | 90.8 (2) |
Nb1—O4—Nb1ix | 166.5 (2) | 166.5 (2) | 166.6 (2) |
Ba2xx—O5—Ba2v | 158.54 (17) | 156.81 (16) | 162.32 (17) |
Ba2xx—O5—Ca1 | 103.55 (16) | 92.78 (14) | 113.46 (18) |
Ba2xx—O5—Nb2 | 92.6 (2) | 80.83 (18) | 104.1 (3) |
Ba2xx—O5—Nb2ix | 88.2 (2) | 76.58 (15) | 99.8 (2) |
Ba2v—O5—Ca1 | 97.08 (16) | 88.00 (14) | 105.42 (17) |
Ba2v—O5—Nb2 | 90.5 (2) | 78.10 (17) | 103.6 (3) |
Ba2v—O5—Nb2ix | 86.50 (18) | 74.92 (15) | 98.3 (2) |
Ca1—O5—Nb2 | 96.0 (3) | 94.2 (2) | 97.7 (3) |
Ca1—O5—Nb2ix | 87.6 (2) | 85.3 (2) | 88.9 (2) |
Nb2—O5—Nb2ix | 165.4 (3) | 152.9 (3) | 176.9 (3) |
Symmetry codes: (i) −x1+1/2, x2+1/2, x3, x5, x4; (ii) −x1+1/2, x2+1/2, x3+1/2, x5+1/2, x4+1/2; (iii) x2, −x1+1, x3, x5, −x4; (iv) x2, −x1+1, x3+1/2, x5+1/2, −x4+1/2; (v) −x1, −x2+1, x3, −x4, −x5; (vi) −x1, −x2+1, x3+1/2, −x4+1/2, −x5+1/2; (vii) −x2+1/2, −x1+1/2, x3, −x4, x5; (viii) −x2+1/2, −x1+1/2, x3+1/2, −x4+1/2, x5+1/2; (ix) x1, x2, x3+1/2, x4+1/2, x5+1/2; (x) −x2, x1, x3, −x5, x4; (xi) −x2, x1, x3+1/2, −x5+1/2, x4+1/2; (xii) −x1, −x2, x3, −x4, −x5; (xiii) −x1, −x2, x3+1/2, −x4+1/2, −x5+1/2; (xiv) x2, −x1, x3, x5, −x4; (xv) x2, −x1, x3+1/2, x5+1/2, −x4+1/2; (xvi) x2−1/2, x1+1/2, x3, x4, −x5; (xvii) x1, x2, x3−1/2, x4+1/2, x5+1/2; (xviii) −x2+1/2, −x1+1/2, x3−1/2, −x4+1/2, x5+1/2; (xix) x2, −x1, x3−1/2, x5+1/2, −x4+1/2; (xx) −x2+1, x1, x3, −x5, x4; (xxi) −x2+1, x1, x3−1/2, −x5+1/2, x4+1/2; (xxii) −x1, −x2+1, x3−1/2, −x4+1/2, −x5+1/2. |
Ba0.721Ca0.251Ce0.024Nb2O6 | Dx = 5.334 Mg m−3 |
Mr = 394.3 | Mo Kα radiation, λ = 0.71073 Å |
Tetragonal, X4bm† | Cell parameters from 16701 reflections |
q1 = 0.28750a* + 0.28750b*; q2 = -0.28750a* + 0.28750b* | θ = 2.9–26.3° |
a = 12.4596 (6) Å | µ = 10.77 mm−1 |
c = 7.9042 (6) Å | T = 295 K |
V = 1227.06 (13) Å3 | Sphere, red |
Z = 10 | 0.18 × 0.17 × 0.17 × 0.17 (radius) mm |
F(000) = 1727 |
† Symmetry operations: (1) x1, x2, x3, x4, x5; (2) −x2, x1, x3, −x5, x4; (3) −x1+1/2, x2+1/2, x3, x5, x4; (4) −x1, −x2, x3, −x4, −x5; (5) −x2+1/2, −x1+1/2, x3, −x4, x5; (6) x2, −x1, x3, x5, −x4; (7) x1+1/2, −x2+1/2, x3, −x5, −x4; (8) x2+1/2, x1+1/2, x3, x4, −x5; (9) x1, x2, x3+1/2, x4+1/2, x5+1/2; (10) −x2, x1, x3+1/2, −x5+1/2, x4+1/2; (11) −x1+1/2, x2+1/2, x3+1/2, x5+1/2, x4+1/2; (12) −x1, −x2, x3+1/2, −x4+1/2, −x5+1/2; (13) −x2+1/2, −x1+1/2, x3+1/2, −x4+1/2, x5+1/2; (14) x2, −x1, x3+1/2, x5+1/2, −x4+1/2; (15) x1+1/2, −x2+1/2, x3+1/2, −x5+1/2, −x4+1/2; (16) x2+1/2, x1+1/2, x3+1/2, x4+1/2, −x5+1/2. |
Xcalibur, Sapphire2, large Be window diffractometer | 2492 reflections with I > 3σ(I) |
Radiation source: Enhance (Mo) X-ray Source | Rint = 0.024 |
Graphite monochromator | θmax = 26.4°, θmin = 2.9° |
Detector resolution: 8.2495 pixels mm-1 | h = −15→15 |
ω and π scans | k = −14→15 |
34673 measured reflections | l = −9→9 |
3275 independent reflections |
Refinement on F | Weighting scheme based on measured s.u.'s w = 1/(σ2(F) + 0.0001F2) |
R[F2 > 2σ(F2)] = 0.031 | (Δ/σ)max = 0.026 |
wR(F2) = 0.039 | Δρmax = 1.65 e Å−3 |
S = 1.38 | Δρmin = −1.36 e Å−3 |
3275 reflections | Extinction correction: B-C type 1 Gaussian isotropic (Becker & Coppens, 1974) |
191 parameters | Extinction coefficient: 1170 (30) |
3 restraints | Absolute structure: 1588 of Friedel pairs used in the refinement |
0 constraints | Absolute structure parameter: 0.52 (3) |
Ba0.721Ca0.251Ce0.024Nb2O6 | V = 1227.06 (13) Å3 |
Mr = 394.3 | Z = 10 |
Tetragonal, X4bm† | Mo Kα radiation |
q1 = 0.28750a* + 0.28750b*; q2 = -0.28750a* + 0.28750b* | µ = 10.77 mm−1 |
a = 12.4596 (6) Å | T = 295 K |
c = 7.9042 (6) Å | 0.18 × 0.17 × 0.17 × 0.17 (radius) mm |
† Symmetry operations: (1) x1, x2, x3, x4, x5; (2) −x2, x1, x3, −x5, x4; (3) −x1+1/2, x2+1/2, x3, x5, x4; (4) −x1, −x2, x3, −x4, −x5; (5) −x2+1/2, −x1+1/2, x3, −x4, x5; (6) x2, −x1, x3, x5, −x4; (7) x1+1/2, −x2+1/2, x3, −x5, −x4; (8) x2+1/2, x1+1/2, x3, x4, −x5; (9) x1, x2, x3+1/2, x4+1/2, x5+1/2; (10) −x2, x1, x3+1/2, −x5+1/2, x4+1/2; (11) −x1+1/2, x2+1/2, x3+1/2, x5+1/2, x4+1/2; (12) −x1, −x2, x3+1/2, −x4+1/2, −x5+1/2; (13) −x2+1/2, −x1+1/2, x3+1/2, −x4+1/2, x5+1/2; (14) x2, −x1, x3+1/2, x5+1/2, −x4+1/2; (15) x1+1/2, −x2+1/2, x3+1/2, −x5+1/2, −x4+1/2; (16) x2+1/2, x1+1/2, x3+1/2, x4+1/2, −x5+1/2. |
Xcalibur, Sapphire2, large Be window diffractometer | 2492 reflections with I > 3σ(I) |
34673 measured reflections | Rint = 0.024 |
3275 independent reflections |
R[F2 > 2σ(F2)] = 0.031 | 3 restraints |
wR(F2) = 0.039 | Δρmax = 1.65 e Å−3 |
S = 1.38 | Δρmin = −1.36 e Å−3 |
3275 reflections | Absolute structure: 1588 of Friedel pairs used in the refinement |
191 parameters | Absolute structure parameter: 0.52 (3) |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Ba2 | 0.171995 (16) | 0.671995 (16) | 0.25 | 0.01638 (10) | 0.8772 |
Ce2 | 0.171995 (16) | 0.671995 (16) | 0.25 | 0.01638 (10) | 0.0156 (10) |
Ca2 | 0.171995 (16) | 0.671995 (16) | 0.25 | 0.01638 (10) | 0.0048 |
Ce1 | 0 | 0 | 0.2545 (4) | 0.0098 (4) | 0.026 (2) |
Ca1 | 0 | 0 | 0.2545 (4) | 0.0098 (4) | 0.6128 |
Ba1 | 0 | 0 | 0.2545 (4) | 0.0098 (4) | 0.0398 |
Nb1 | 0 | 0.5 | 0.01146 (15) | 0.00543 (13) | |
Nb2 | 0.07328 (2) | 0.21022 (2) | 0.00463 (10) | 0.00710 (10) | |
O1 | 0.21542 (18) | 0.28458 (18) | −0.0094 (9) | 0.0111 (7) | |
O2 | 0.1384 (2) | 0.0687 (2) | −0.0208 (5) | 0.0185 (8) | |
O3 | −0.00618 (18) | 0.34370 (17) | −0.0148 (5) | 0.0131 (7) | |
O4 | 0 | 0.5 | 0.2417 (9) | 0.0184 (11) | |
O5 | 0.07375 (18) | 0.2030 (2) | 0.2374 (5) | 0.0187 (8) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ba2 | 0.01872 (16) | 0.01872 (16) | 0.01170 (19) | −0.01010 (12) | 0.0006 (2) | 0.0006 (2) |
Ce2 | 0.01872 (16) | 0.01872 (16) | 0.01170 (19) | −0.01010 (12) | 0.0006 (2) | 0.0006 (2) |
Ca2 | 0.01872 (16) | 0.01872 (16) | 0.01170 (19) | −0.01010 (12) | 0.0006 (2) | 0.0006 (2) |
Ce1 | 0.0082 (6) | 0.0082 (6) | 0.0130 (9) | 0 | 0 | 0 |
Ca1 | 0.0082 (6) | 0.0082 (6) | 0.0130 (9) | 0 | 0 | 0 |
Ba1 | 0.0082 (6) | 0.0082 (6) | 0.0130 (9) | 0 | 0 | 0 |
Nb1 | 0.00554 (18) | 0.00554 (18) | 0.0052 (3) | −0.00103 (18) | 0 | 0 |
Nb2 | 0.00604 (17) | 0.00642 (17) | 0.00884 (19) | 0.00133 (9) | −0.0007 (3) | −0.0014 (3) |
O1 | 0.0122 (9) | 0.0122 (9) | 0.0089 (17) | −0.0011 (11) | −0.0041 (15) | 0.0041 (15) |
O2 | 0.0221 (14) | 0.0157 (12) | 0.0177 (16) | 0.0104 (10) | −0.0024 (15) | −0.0014 (15) |
O3 | 0.0108 (11) | 0.0096 (11) | 0.0190 (13) | 0.0038 (8) | −0.0029 (15) | −0.0063 (15) |
O4 | 0.0244 (15) | 0.0244 (15) | 0.006 (2) | 0.0007 (18) | 0 | 0 |
O5 | 0.0210 (14) | 0.0241 (13) | 0.0111 (15) | −0.0038 (10) | 0.0034 (17) | −0.0001 (17) |
Average | Minimum | Maximum | |
Ba2—O1i | 2.842 (9) | 2.810 (9) | 2.900 (9) |
Ba2—O1ii | 2.738 (9) | 2.714 (9) | 2.786 (9) |
Ba2—O2i | 3.466 (9) | 3.377 (9) | 3.504 (9) |
Ba2—O2ii | 3.248 (9) | 3.153 (9) | 3.351 (9) |
Ba2—O2iii | 3.456 (9) | 3.370 (9) | 3.508 (9) |
Ba2—O2iv | 3.268 (9) | 3.187 (9) | 3.313 (9) |
Ba2—O3v | 2.954 (8) | 2.828 (8) | 3.082 (8) |
Ba2—O3vi | 2.788 (8) | 2.712 (8) | 2.882 (8) |
Ba2—O3vii | 2.904 (8) | 2.812 (8) | 3.097 (8) |
Ba2—O3viii | 2.757 (8) | 2.688 (8) | 2.902 (8) |
Ba2—O4 | 3.070 (5) | 2.885 (5) | 3.182 (5) |
Ba2—O5i | 3.256 (6) | 2.822 (6) | 3.565 (6) |
Ba2—O5v | 3.353 (6) | 3.107 (6) | 3.773 (6) |
Ba2—O5vii | 3.555 (6) | 3.092 (6) | 3.788 (6) |
Ba2—O5iii | 3.154 (6) | 3.075 (6) | 3.316 (6) |
Ca1—O2 | 2.921 (9) | 2.589 (9) | 3.228 (9) |
Ca1—O2ix | 2.628 (9) | 2.490 (9) | 2.787 (9) |
Ca1—O2x | 2.921 (9) | 2.589 (9) | 3.228 (9) |
Ca1—O2xi | 2.628 (9) | 2.490 (9) | 2.787 (9) |
Ca1—O2xii | 2.921 (9) | 2.589 (9) | 3.228 (9) |
Ca1—O2xiii | 2.628 (9) | 2.490 (9) | 2.787 (9) |
Ca1—O2xiv | 2.921 (9) | 2.589 (9) | 3.228 (9) |
Ca1—O2xv | 2.628 (9) | 2.490 (9) | 2.787 (9) |
Ca1—O5 | 2.698 (6) | 2.654 (6) | 2.758 (6) |
Ca1—O5x | 2.698 (6) | 2.654 (6) | 2.758 (6) |
Ca1—O5xii | 2.698 (6) | 2.654 (6) | 2.758 (6) |
Ca1—O5xiv | 2.698 (6) | 2.654 (6) | 2.758 (6) |
Nb1—O3 | 1.965 (9) | 1.955 (9) | 1.987 (9) |
Nb1—O3v | 1.968 (9) | 1.957 (9) | 1.975 (9) |
Nb1—O3vii | 1.966 (9) | 1.951 (9) | 1.981 (9) |
Nb1—O3xvi | 1.971 (9) | 1.960 (9) | 1.981 (9) |
Nb1—O4 | 1.838 (11) | 1.820 (11) | 1.849 (11) |
Nb1—O4xvii | 2.149 (11) | 2.138 (11) | 2.156 (11) |
Nb2—O1 | 2.004 (9) | 1.985 (9) | 2.032 (9) |
Nb2—O2 | 1.968 (10) | 1.942 (10) | 1.991 (9) |
Nb2—O2x | 2.003 (10) | 1.986 (10) | 2.029 (9) |
Nb2—O3 | 1.951 (9) | 1.934 (9) | 1.969 (9) |
Nb2—O5 | 1.860 (11) | 1.835 (11) | 1.922 (11) |
Nb2—O5xvii | 2.140 (11) | 2.112 (11) | 2.197 (11) |
O1—O2 | 2.864 (13) | 2.811 (13) | 2.920 (13) |
O1—O2vii | 2.853 (13) | 2.832 (13) | 2.913 (13) |
O1—O3 | 2.866 (13) | 2.848 (13) | 2.908 (13) |
O1—O3vii | 2.862 (13) | 2.844 (13) | 2.886 (13) |
O1—O5 | 2.844 (12) | 2.787 (13) | 2.944 (12) |
O1—O5xvii | 2.863 (12) | 2.783 (13) | 2.990 (12) |
O1—O5vii | 2.827 (12) | 2.797 (13) | 2.875 (12) |
O1—O5xviii | 2.879 (12) | 2.815 (13) | 2.917 (12) |
O2—O2xvii | 3.933 (10) | 3.291 (10) | 4.625 (10) |
O2—O2ix | 3.976 (10) | 3.291 (10) | 4.625 (10) |
O2—O2x | 2.768 (13) | 2.698 (13) | 2.813 (13) |
O2—O2xiv | 2.768 (13) | 2.698 (13) | 2.813 (13) |
O2—O3xiv | 2.670 (13) | 2.610 (13) | 2.746 (13) |
O2—O5 | 2.782 (12) | 2.760 (12) | 2.853 (13) |
O2—O5xvii | 2.700 (12) | 2.654 (12) | 2.754 (12) |
O2—O5xiv | 2.843 (12) | 2.818 (12) | 2.872 (13) |
O2—O5xix | 2.757 (12) | 2.711 (12) | 2.844 (12) |
O3—O3xvii | 3.984 (9) | 3.469 (9) | 4.435 (9) |
O3—O3ix | 3.921 (9) | 3.469 (9) | 4.435 (9) |
O3—O3vii | 2.877 (13) | 2.845 (13) | 2.893 (13) |
O3—O3xvi | 2.660 (13) | 2.656 (13) | 2.667 (13) |
O3—O4 | 2.829 (11) | 2.811 (11) | 2.835 (12) |
O3—O4xvii | 2.756 (11) | 2.740 (11) | 2.782 (12) |
O3—O5 | 2.854 (12) | 2.771 (12) | 2.984 (12) |
O3—O5xvii | 2.834 (12) | 2.792 (12) | 2.923 (12) |
O4—O5 | 3.878 (7) | 3.323 (7) | 4.338 (7) |
O4—O5v | 3.769 (8) | 3.302 (8) | 4.325 (8) |
O4—O5vii | 3.994 (8) | 3.307 (8) | 4.323 (8) |
O4—O5xvi | 3.652 (7) | 3.315 (7) | 4.339 (8) |
O5—O5x | 3.787 (9) | 3.171 (9) | 4.443 (9) |
O5—O5xiv | 3.787 (9) | 3.171 (9) | 4.443 (9) |
O1i—Ba2—O1ii | 89.0 (3) | 86.2 (3) | 93.0 (2) |
O1i—Ba2—O2i | 53.0 (2) | 51.6 (2) | 54.4 (2) |
O1i—Ba2—O2ii | 102.8 (2) | 98.4 (2) | 108.9 (2) |
O1i—Ba2—O2iii | 52.9 (2) | 52.4 (2) | 53.7 (2) |
O1i—Ba2—O2iv | 104.7 (2) | 100.7 (2) | 106.6 (2) |
O1i—Ba2—O3v | 82.7 (2) | 81.5 (2) | 83.5 (2) |
O1i—Ba2—O3vi | 152.3 (3) | 147.0 (3) | 154.8 (3) |
O1i—Ba2—O3vii | 83.2 (2) | 79.7 (2) | 85.1 (2) |
O1i—Ba2—O3viii | 149.8 (3) | 146.7 (3) | 155.8 (3) |
O1i—Ba2—O4 | 133.2 (2) | 131.2 (2) | 134.5 (2) |
O1i—Ba2—O5i | 54.9 (3) | 52.3 (2) | 58.3 (3) |
O1i—Ba2—O5v | 101.5 (2) | 98.0 (2) | 104.8 (3) |
O1i—Ba2—O5vii | 100.3 (2) | 98.4 (2) | 104.1 (3) |
O1i—Ba2—O5iii | 55.9 (3) | 53.7 (2) | 57.1 (3) |
O1ii—Ba2—O2i | 104.6 (2) | 99.9 (2) | 111.4 (2) |
O1ii—Ba2—O2ii | 56.0 (2) | 55.3 (2) | 57.2 (3) |
O1ii—Ba2—O2iii | 106.5 (2) | 102.7 (2) | 108.4 (2) |
O1ii—Ba2—O2iv | 56.2 (2) | 55.1 (2) | 57.4 (3) |
O1ii—Ba2—O3v | 152.6 (3) | 148.2 (3) | 154.7 (3) |
O1ii—Ba2—O3vi | 87.6 (2) | 85.8 (2) | 89.0 (2) |
O1ii—Ba2—O3vii | 150.4 (3) | 147.5 (3) | 156.0 (3) |
O1ii—Ba2—O3viii | 88.4 (3) | 83.9 (2) | 90.7 (3) |
O1ii—Ba2—O4 | 137.8 (2) | 135.8 (2) | 139.2 (2) |
O1ii—Ba2—O5i | 56.4 (3) | 54.0 (2) | 59.8 (3) |
O1ii—Ba2—O5v | 104.7 (2) | 100.2 (2) | 108.5 (3) |
O1ii—Ba2—O5vii | 103.0 (2) | 100.6 (2) | 107.9 (3) |
O1ii—Ba2—O5iii | 57.5 (3) | 55.4 (3) | 58.7 (3) |
O2i—Ba2—O2ii | 71.3 (2) | 63.7 (2) | 80.9 (2) |
O2i—Ba2—O2iii | 96.8 (2) | 94.61 (19) | 100.0 (2) |
O2i—Ba2—O2iv | 153.0 (2) | 151.8 (2) | 153.6 (2) |
O2i—Ba2—O3v | 90.9 (2) | 90.8 (2) | 91.2 (2) |
O2i—Ba2—O3vi | 152.5 (2) | 150.9 (2) | 155.7 (2) |
O2i—Ba2—O3vii | 48.9 (2) | 47.6 (2) | 50.1 (2) |
O2i—Ba2—O3viii | 98.8 (2) | 95.0 (2) | 106.3 (2) |
O2i—Ba2—O4 | 102.7 (2) | 99.3 (2) | 105.0 (2) |
O2i—Ba2—O5i | 48.4 (2) | 46.5 (2) | 51.7 (2) |
O2i—Ba2—O5v | 140.3 (2) | 135.7 (2) | 143.8 (2) |
O2i—Ba2—O5vii | 47.6 (2) | 45.8 (2) | 51.4 (2) |
O2i—Ba2—O5iii | 106.4 (2) | 103.3 (2) | 108.0 (2) |
O2ii—Ba2—O2iii | 152.6 (2) | 150.4 (2) | 155.1 (2) |
O2ii—Ba2—O2iv | 104.8 (2) | 102.9 (2) | 108.1 (2) |
O2ii—Ba2—O3v | 150.5 (2) | 146.9 (2) | 154.8 (2) |
O2ii—Ba2—O3vi | 97.7 (2) | 96.7 (2) | 99.3 (2) |
O2ii—Ba2—O3vii | 97.9 (2) | 94.7 (2) | 104.3 (2) |
O2ii—Ba2—O3viii | 52.1 (2) | 51.4 (2) | 52.7 (3) |
O2ii—Ba2—O4 | 104.9 (2) | 101.9 (2) | 107.0 (2) |
O2ii—Ba2—O5i | 48.4 (2) | 47.0 (2) | 50.7 (2) |
O2ii—Ba2—O5v | 148.3 (2) | 143.4 (2) | 152.0 (2) |
O2ii—Ba2—O5vii | 47.3 (2) | 45.4 (2) | 51.3 (2) |
O2ii—Ba2—O5iii | 109.6 (2) | 106.8 (2) | 111.1 (2) |
O2iii—Ba2—O2iv | 74.7 (2) | 65.3 (2) | 79.3 (2) |
O2iii—Ba2—O3v | 48.6 (2) | 48.1 (2) | 49.5 (2) |
O2iii—Ba2—O3vi | 102.4 (2) | 95.4 (2) | 105.9 (2) |
O2iii—Ba2—O3vii | 91.3 (2) | 89.9 (2) | 91.9 (2) |
O2iii—Ba2—O3viii | 154.2 (2) | 150.4 (2) | 156.9 (2) |
O2iii—Ba2—O4 | 101.4 (2) | 100.3 (2) | 103.9 (2) |
O2iii—Ba2—O5i | 105.4 (2) | 103.5 (2) | 107.8 (2) |
O2iii—Ba2—O5v | 49.1 (2) | 46.1 (2) | 51.2 (2) |
O2iii—Ba2—O5vii | 138.7 (2) | 136.6 (2) | 142.7 (2) |
O2iii—Ba2—O5iii | 49.3 (2) | 48.5 (2) | 49.8 (2) |
O2iv—Ba2—O3v | 101.1 (2) | 94.8 (2) | 104.3 (2) |
O2iv—Ba2—O3vi | 51.9 (2) | 51.5 (2) | 52.5 (2) |
O2iv—Ba2—O3vii | 152.9 (2) | 146.8 (2) | 155.7 (2) |
O2iv—Ba2—O3viii | 98.7 (2) | 96.1 (2) | 100.0 (2) |
O2iv—Ba2—O4 | 103.6 (2) | 102.4 (2) | 106.4 (2) |
O2iv—Ba2—O5i | 108.8 (2) | 107.2 (2) | 110.6 (2) |
O2iv—Ba2—O5v | 49.0 (2) | 45.4 (2) | 51.3 (2) |
O2iv—Ba2—O5vii | 146.5 (2) | 144.0 (2) | 151.2 (2) |
O2iv—Ba2—O5iii | 49.1 (2) | 48.6 (2) | 49.5 (2) |
O3v—Ba2—O3vi | 88.1 (2) | 77.8 (2) | 95.8 (2) |
O3v—Ba2—O3vii | 54.0 (2) | 52.2 (2) | 55.0 (2) |
O3v—Ba2—O3viii | 111.1 (2) | 109.7 (2) | 113.8 (2) |
O3v—Ba2—O4 | 55.9 (2) | 55.3 (2) | 57.3 (2) |
O3v—Ba2—O5i | 132.5 (3) | 128.9 (2) | 137.5 (3) |
O3v—Ba2—O5v | 52.6 (2) | 49.6 (2) | 54.1 (2) |
O3v—Ba2—O5vii | 103.9 (2) | 101.3 (2) | 106.5 (2) |
O3v—Ba2—O5iii | 97.2 (2) | 96.7 (2) | 97.9 (2) |
O3vi—Ba2—O3vii | 111.5 (2) | 108.4 (2) | 115.1 (2) |
O3vi—Ba2—O3viii | 57.3 (3) | 55.7 (3) | 58.2 (3) |
O3vi—Ba2—O4 | 55.7 (2) | 54.9 (2) | 57.5 (2) |
O3vi—Ba2—O5i | 139.3 (3) | 135.4 (2) | 144.7 (3) |
O3vi—Ba2—O5v | 53.6 (2) | 49.3 (2) | 55.7 (3) |
O3vi—Ba2—O5vii | 106.9 (2) | 104.4 (2) | 109.9 (2) |
O3vi—Ba2—O5iii | 100.2 (2) | 99.8 (2) | 100.9 (2) |
O3vii—Ba2—O3viii | 84.2 (2) | 78.7 (2) | 94.8 (2) |
O3vii—Ba2—O4 | 56.4 (2) | 54.4 (2) | 58.2 (2) |
O3vii—Ba2—O5i | 96.7 (2) | 95.4 (2) | 99.3 (2) |
O3vii—Ba2—O5v | 104.8 (2) | 101.0 (2) | 106.9 (2) |
O3vii—Ba2—O5vii | 51.2 (2) | 49.7 (2) | 54.0 (2) |
O3vii—Ba2—O5iii | 134.3 (3) | 129.5 (2) | 136.8 (3) |
O3viii—Ba2—O4 | 56.0 (2) | 54.4 (2) | 58.0 (2) |
O3viii—Ba2—O5i | 99.7 (2) | 98.5 (2) | 102.1 (2) |
O3viii—Ba2—O5v | 108.1 (2) | 103.8 (2) | 110.5 (2) |
O3viii—Ba2—O5vii | 51.4 (2) | 49.2 (2) | 55.6 (3) |
O3viii—Ba2—O5iii | 141.5 (3) | 135.7 (2) | 144.5 (3) |
O4—Ba2—O5i | 142.13 (14) | 138.51 (15) | 145.18 (14) |
O4—Ba2—O5v | 71.45 (13) | 66.76 (14) | 76.39 (12) |
O4—Ba2—O5vii | 73.47 (13) | 66.61 (14) | 76.54 (12) |
O4—Ba2—O5iii | 140.34 (14) | 137.50 (14) | 146.20 (14) |
O5i—Ba2—O5v | 146.09 (15) | 144.88 (15) | 147.64 (15) |
O5i—Ba2—O5vii | 68.71 (14) | 66.20 (13) | 74.46 (16) |
O5i—Ba2—O5iii | 77.27 (15) | 72.45 (15) | 79.58 (15) |
O5v—Ba2—O5vii | 144.81 (14) | 139.87 (15) | 147.26 (14) |
O5v—Ba2—O5iii | 68.94 (15) | 66.66 (15) | 73.14 (15) |
O5vii—Ba2—O5iii | 145.89 (15) | 145.34 (16) | 146.78 (15) |
O2—Ca1—O2ix | 91.2 (3) | 80.7 (3) | 100.3 (2) |
O2—Ca1—O2x | 56.0 (3) | 55.5 (3) | 56.6 (3) |
O2—Ca1—O2xi | 120.4 (3) | 116.8 (3) | 122.6 (3) |
O2—Ca1—O2xii | 83.1 (3) | 77.9 (2) | 89.3 (3) |
O2—Ca1—O2xiii | 174.2 (3) | 170.0 (3) | 178.2 (3) |
O2—Ca1—O2xiv | 56.0 (3) | 55.5 (3) | 56.6 (3) |
O2—Ca1—O2xv | 120.2 (3) | 116.8 (3) | 122.6 (3) |
O2—Ca1—O5 | 59.1 (3) | 56.7 (3) | 62.2 (3) |
O2—Ca1—O5x | 114.4 (3) | 111.4 (3) | 117.1 (3) |
O2—Ca1—O5xii | 115.9 (3) | 112.4 (3) | 119.3 (3) |
O2—Ca1—O5xiv | 60.6 (3) | 56.7 (3) | 65.2 (3) |
O2ix—Ca1—O2x | 120.2 (3) | 116.8 (3) | 122.6 (3) |
O2ix—Ca1—O2xi | 63.0 (3) | 62.0 (3) | 64.1 (3) |
O2ix—Ca1—O2xii | 174.2 (3) | 170.0 (3) | 178.2 (3) |
O2ix—Ca1—O2xiii | 94.5 (3) | 81.5 (3) | 109.2 (3) |
O2ix—Ca1—O2xiv | 120.4 (3) | 116.8 (3) | 122.6 (3) |
O2ix—Ca1—O2xv | 63.0 (3) | 62.0 (3) | 64.1 (3) |
O2ix—Ca1—O5 | 60.7 (3) | 59.2 (3) | 63.1 (3) |
O2ix—Ca1—O5x | 122.0 (3) | 118.7 (3) | 124.4 (3) |
O2ix—Ca1—O5xii | 124.0 (3) | 121.5 (3) | 124.8 (3) |
O2ix—Ca1—O5xiv | 62.7 (3) | 60.8 (3) | 64.2 (3) |
O2x—Ca1—O2xi | 91.2 (3) | 80.7 (3) | 100.3 (2) |
O2x—Ca1—O2xii | 56.0 (3) | 55.5 (3) | 56.6 (3) |
O2x—Ca1—O2xiii | 120.4 (3) | 116.8 (3) | 122.6 (3) |
O2x—Ca1—O2xiv | 83.1 (3) | 77.9 (2) | 89.3 (3) |
O2x—Ca1—O2xv | 174.2 (3) | 170.0 (3) | 178.2 (3) |
O2x—Ca1—O5 | 60.6 (3) | 56.7 (3) | 65.2 (3) |
O2x—Ca1—O5x | 59.1 (3) | 56.7 (3) | 62.2 (3) |
O2x—Ca1—O5xii | 114.4 (3) | 111.4 (3) | 117.1 (3) |
O2x—Ca1—O5xiv | 115.9 (3) | 112.4 (3) | 119.3 (3) |
O2xi—Ca1—O2xii | 120.2 (3) | 116.8 (3) | 122.6 (3) |
O2xi—Ca1—O2xiii | 63.0 (3) | 62.0 (3) | 64.1 (3) |
O2xi—Ca1—O2xiv | 174.2 (3) | 170.0 (3) | 178.2 (3) |
O2xi—Ca1—O2xv | 94.5 (3) | 81.5 (3) | 109.2 (3) |
O2xi—Ca1—O5 | 62.7 (3) | 60.8 (3) | 64.2 (3) |
O2xi—Ca1—O5x | 60.7 (3) | 59.2 (3) | 63.1 (3) |
O2xi—Ca1—O5xii | 122.0 (3) | 118.7 (3) | 124.4 (3) |
O2xi—Ca1—O5xiv | 124.0 (3) | 121.5 (3) | 124.8 (3) |
O2xii—Ca1—O2xiii | 91.2 (3) | 80.7 (3) | 100.3 (2) |
O2xii—Ca1—O2xiv | 56.0 (3) | 55.5 (3) | 56.6 (3) |
O2xii—Ca1—O2xv | 120.4 (3) | 116.8 (3) | 122.6 (3) |
O2xii—Ca1—O5 | 115.9 (3) | 112.4 (3) | 119.3 (3) |
O2xii—Ca1—O5x | 60.6 (3) | 56.7 (3) | 65.2 (3) |
O2xii—Ca1—O5xii | 59.1 (3) | 56.7 (3) | 62.2 (3) |
O2xii—Ca1—O5xiv | 114.4 (3) | 111.4 (3) | 117.1 (3) |
O2xiii—Ca1—O2xiv | 120.2 (3) | 116.8 (3) | 122.6 (3) |
O2xiii—Ca1—O2xv | 63.0 (3) | 62.0 (3) | 64.1 (3) |
O2xiii—Ca1—O5 | 124.0 (3) | 121.5 (3) | 124.8 (3) |
O2xiii—Ca1—O5x | 62.7 (3) | 60.8 (3) | 64.2 (3) |
O2xiii—Ca1—O5xii | 60.7 (3) | 59.2 (3) | 63.1 (3) |
O2xiii—Ca1—O5xiv | 122.0 (3) | 118.7 (3) | 124.4 (3) |
O2xiv—Ca1—O2xv | 91.2 (3) | 80.7 (3) | 100.3 (2) |
O2xiv—Ca1—O5 | 114.4 (3) | 111.4 (3) | 117.1 (3) |
O2xiv—Ca1—O5x | 115.9 (3) | 112.4 (3) | 119.3 (3) |
O2xiv—Ca1—O5xii | 60.6 (3) | 56.7 (3) | 65.2 (3) |
O2xiv—Ca1—O5xiv | 59.1 (3) | 56.7 (3) | 62.2 (3) |
O2xv—Ca1—O5 | 122.0 (3) | 118.7 (3) | 124.4 (3) |
O2xv—Ca1—O5x | 124.0 (3) | 121.5 (3) | 124.8 (3) |
O2xv—Ca1—O5xii | 62.7 (3) | 60.8 (3) | 64.2 (3) |
O2xv—Ca1—O5xiv | 60.7 (3) | 59.2 (3) | 63.1 (3) |
O5—Ca1—O5x | 89.84 (19) | 70.94 (19) | 108.78 (19) |
O5—Ca1—O5xii | 174.1 (4) | 173.1 (4) | 175.6 (4) |
O5—Ca1—O5xiv | 89.84 (19) | 70.94 (18) | 108.78 (19) |
O5x—Ca1—O5xii | 89.84 (19) | 70.94 (19) | 108.78 (19) |
O5x—Ca1—O5xiv | 174.1 (4) | 173.1 (4) | 175.6 (4) |
O5xii—Ca1—O5xiv | 89.84 (19) | 70.94 (19) | 108.78 (19) |
O3—Nb1—O3v | 167.8 (3) | 167.6 (3) | 168.1 (3) |
O3—Nb1—O3vii | 94.1 (4) | 92.2 (4) | 95.0 (4) |
O3—Nb1—O3xvi | 85.0 (4) | 84.7 (4) | 85.5 (4) |
O3—Nb1—O4 | 96.1 (3) | 95.8 (3) | 96.2 (3) |
O3—Nb1—O4xvii | 84.0 (3) | 83.2 (3) | 84.9 (3) |
O3v—Nb1—O3vii | 85.2 (4) | 84.9 (4) | 85.4 (4) |
O3v—Nb1—O3xvi | 93.1 (4) | 92.1 (4) | 95.2 (4) |
O3v—Nb1—O4 | 96.1 (3) | 96.0 (3) | 96.2 (3) |
O3v—Nb1—O4xvii | 83.9 (3) | 83.4 (3) | 84.5 (3) |
O3vii—Nb1—O3xvi | 167.8 (3) | 167.6 (3) | 168.1 (3) |
O3vii—Nb1—O4 | 96.0 (3) | 95.9 (3) | 96.0 (3) |
O3vii—Nb1—O4xvii | 84.2 (3) | 83.4 (3) | 84.6 (3) |
O3xvi—Nb1—O4 | 96.1 (3) | 95.8 (3) | 96.3 (3) |
O3xvi—Nb1—O4xvii | 83.7 (3) | 83.1 (3) | 84.8 (3) |
O4—Nb1—O4xvii | 179.3 (3) | 179.3 (3) | 179.4 (3) |
O1—Nb2—O2 | 92.3 (4) | 90.0 (4) | 93.6 (4) |
O1—Nb2—O2x | 170.5 (3) | 166.0 (3) | 176.0 (3) |
O1—Nb2—O3 | 92.9 (4) | 92.3 (4) | 94.0 (4) |
O1—Nb2—O5 | 94.7 (3) | 91.0 (3) | 98.4 (3) |
O1—Nb2—O5xvii | 87.4 (3) | 83.6 (3) | 91.1 (3) |
O2—Nb2—O2x | 88.4 (4) | 86.3 (4) | 89.2 (4) |
O2—Nb2—O3 | 167.9 (3) | 165.9 (3) | 169.4 (3) |
O2—Nb2—O5 | 93.2 (3) | 92.5 (3) | 93.6 (3) |
O2—Nb2—O5xvii | 82.1 (3) | 81.6 (3) | 82.4 (3) |
O2x—Nb2—O3 | 85.0 (4) | 82.1 (4) | 87.2 (4) |
O2x—Nb2—O5 | 94.7 (3) | 93.0 (3) | 95.4 (3) |
O2x—Nb2—O5xvii | 83.4 (3) | 82.6 (3) | 84.8 (3) |
O3—Nb2—O5 | 97.0 (3) | 93.7 (3) | 100.2 (3) |
O3—Nb2—O5xvii | 87.6 (3) | 84.0 (3) | 91.2 (3) |
O5—Nb2—O5xvii | 174.9 (3) | 174.6 (3) | 175.2 (2) |
Ba2xx—O1—Ba2xxi | 89.5 (3) | 88.6 (3) | 90.7 (3) |
Ba2xx—O1—Nb2 | 100.0 (3) | 93.1 (3) | 106.1 (4) |
Ba2xx—O1—Nb2vii | 98.8 (3) | 96.5 (3) | 102.5 (3) |
Ba2xxi—O1—Nb2 | 103.9 (4) | 100.4 (3) | 108.6 (4) |
Ba2xxi—O1—Nb2vii | 104.9 (4) | 103.3 (3) | 105.6 (4) |
Nb2—O1—Nb2vii | 144.8 (5) | 142.3 (5) | 146.7 (5) |
Ba2xx—O2—Ba2xxi | 72.40 (19) | 70.40 (18) | 73.7 (2) |
Ba2xx—O2—Ca1 | 93.1 (2) | 84.21 (17) | 102.6 (2) |
Ba2xx—O2—Ca1xvii | 171.6 (3) | 162.7 (3) | 175.6 (3) |
Ba2xx—O2—Nb2 | 82.8 (3) | 78.0 (3) | 86.8 (3) |
Ba2xx—O2—Nb2xiv | 87.4 (3) | 82.2 (3) | 91.5 (3) |
Ba2xxi—O2—Ca1 | 165.5 (3) | 157.9 (3) | 172.9 (3) |
Ba2xxi—O2—Ca1xvii | 103.6 (2) | 92.4 (2) | 115.6 (3) |
Ba2xxi—O2—Nb2 | 90.2 (3) | 82.8 (3) | 96.1 (3) |
Ba2xxi—O2—Nb2xiv | 94.8 (3) | 87.1 (3) | 100.9 (3) |
Ca1—O2—Ca1xvii | 90.8 (3) | 86.4 (3) | 94.6 (3) |
Ca1—O2—Nb2 | 86.2 (3) | 77.2 (3) | 95.9 (3) |
Ca1—O2—Nb2xiv | 85.5 (3) | 77.2 (3) | 94.3 (3) |
Ca1xvii—O2—Nb2 | 94.7 (3) | 89.7 (3) | 98.3 (4) |
Ca1xvii—O2—Nb2xiv | 93.9 (3) | 88.9 (3) | 97.3 (4) |
Nb2—O2—Nb2xiv | 163.5 (4) | 149.0 (4) | 170.0 (4) |
Ba2v—O3—Ba2xxii | 87.1 (3) | 86.1 (3) | 87.6 (3) |
Ba2v—O3—Nb1 | 90.8 (3) | 86.4 (3) | 95.0 (3) |
Ba2v—O3—Nb2 | 105.0 (3) | 95.3 (3) | 112.7 (3) |
Ba2xxii—O3—Nb1 | 99.7 (3) | 96.1 (3) | 102.2 (4) |
Ba2xxii—O3—Nb2 | 110.6 (3) | 104.8 (3) | 117.8 (4) |
Nb1—O3—Nb2 | 144.3 (5) | 140.0 (5) | 145.8 (5) |
Ba2—O4—Ba2v | 174.7 (2) | 174.5 (3) | 174.9 (2) |
Ba2—O4—Nb1 | 89.7 (2) | 87.3 (2) | 94.8 (3) |
Ba2—O4—Nb1ix | 87.5 (2) | 85.2 (2) | 91.9 (3) |
Ba2v—O4—Nb1 | 92.1 (3) | 87.2 (2) | 94.9 (3) |
Ba2v—O4—Nb1ix | 89.6 (2) | 85.3 (2) | 91.8 (3) |
Nb1—O4—Nb1ix | 166.2 (3) | 166.1 (3) | 166.2 (3) |
Ba2xx—O5—Ba2v | 158.6 (2) | 156.6 (2) | 162.9 (2) |
Ba2xx—O5—Ca1 | 103.71 (19) | 92.39 (17) | 114.0 (2) |
Ba2xx—O5—Nb2 | 92.2 (3) | 80.1 (2) | 103.8 (4) |
Ba2xx—O5—Nb2ix | 88.7 (3) | 76.2 (2) | 101.3 (3) |
Ba2v—O5—Ca1 | 97.14 (19) | 87.56 (17) | 105.9 (2) |
Ba2v—O5—Nb2 | 90.1 (3) | 77.1 (2) | 104.1 (3) |
Ba2v—O5—Nb2ix | 86.7 (2) | 74.70 (19) | 98.9 (3) |
Ca1—O5—Ba1 | 0.0 (5) | 0.0 (5) | 0.0 (5) |
Ca1—O5—Nb2 | 94.9 (3) | 92.9 (3) | 96.9 (3) |
Ca1—O5—Nb2ix | 88.7 (3) | 86.1 (3) | 90.3 (3) |
Nb2—O5—Nb2ix | 164.6 (3) | 151.7 (3) | 177.5 (3) |
Symmetry codes: (i) −x1+1/2, x2+1/2, x3, x5, x4; (ii) −x1+1/2, x2+1/2, x3+1/2, x5+1/2, x4+1/2; (iii) x2, −x1+1, x3, x5, −x4; (iv) x2, −x1+1, x3+1/2, x5+1/2, −x4+1/2; (v) −x1, −x2+1, x3, −x4, −x5; (vi) −x1, −x2+1, x3+1/2, −x4+1/2, −x5+1/2; (vii) −x2+1/2, −x1+1/2, x3, −x4, x5; (viii) −x2+1/2, −x1+1/2, x3+1/2, −x4+1/2, x5+1/2; (ix) x1, x2, x3+1/2, x4+1/2, x5+1/2; (x) −x2, x1, x3, −x5, x4; (xi) −x2, x1, x3+1/2, −x5+1/2, x4+1/2; (xii) −x1, −x2, x3, −x4, −x5; (xiii) −x1, −x2, x3+1/2, −x4+1/2, −x5+1/2; (xiv) x2, −x1, x3, x5, −x4; (xv) x2, −x1, x3+1/2, x5+1/2, −x4+1/2; (xvi) x2−1/2, x1+1/2, x3, x4, −x5; (xvii) x1, x2, x3−1/2, x4+1/2, x5+1/2; (xviii) −x2+1/2, −x1+1/2, x3−1/2, −x4+1/2, x5+1/2; (xix) x2, −x1, x3−1/2, x5+1/2, −x4+1/2; (xx) −x2+1, x1, x3, −x5, x4; (xxi) −x2+1, x1, x3−1/2, −x5+1/2, x4+1/2; (xxii) −x1, −x2+1, x3−1/2, −x4+1/2, −x5+1/2. |
Experimental details
(cbn) | (ce-cbn) | |
Crystal data | ||
Chemical formula | Ba0.720Ca0.279Nb2O6 | Ba0.721Ca0.251Ce0.024Nb2O6 |
Mr | 391.9 | 394.3 |
Crystal system, space group | Tetragonal, X4bm† | Tetragonal, X4bm‡ |
Temperature (K) | 295 | 295 |
Wave vectors | q1 = 0.29420a* + 0.29420b*; q2 = -0.29420a* + 0.29420b* | q1 = 0.28750a* + 0.28750b*; q2 = -0.28750a* + 0.28750b* |
a, c (Å) | 12.4529 (4), 7.9242 (6) | 12.4596 (6), 7.9042 (6) |
V (Å3) | 1228.84 (11) | 1227.06 (13) |
Z | 10 | 10 |
Radiation type | Mo Kα | Mo Kα |
µ (mm−1) | 10.58 | 10.77 |
Crystal size (mm) | 0.19 × 0.18 × 0.12 | 0.18 × 0.17 × 0.17 × 0.17 (radius) |
Data collection | ||
Diffractometer | Xcalibur, Sapphire2, large Be window diffractometer | Xcalibur, Sapphire2, large Be window diffractometer |
Absorption correction | Analytical CrysAlis PRO, Oxford Diffraction Ltd., Version 1.171.34.9 (release 08-12-2009 CrysAlis171 .NET) (compiled Dec 8 2009,17:31:18) Analytical numeric absorption correction using a multifaceted crystal model based on expressions derived by R.C. Clark & J.S. Reid. (Clark, R. C. & Reid, J. S. (1995). Acta Cryst. A51, 887-897) | – |
Tmin, Tmax | 0.255, 0.426 | – |
No. of measured, independent and observed [I > 3σ(I)] reflections | 34896, 3291, 2925 | 34673, 3275, 2492 |
Rint | 0.025 | 0.024 |
(sin θ/λ)max (Å−1) | 0.626 | 0.625 |
Refinement | ||
R[F2 > 2σ(F2)], wR(F2), S | 0.028, 0.041, 1.65 | 0.031, 0.039, 1.38 |
No. of reflections | 3291 | 3275 |
No. of parameters | 191 | 191 |
No. of restraints | 2 | 3 |
Δρmax, Δρmin (e Å−3) | 0.00, −1.00 | 1.65, −1.36 |
Absolute structure | 1596 of Friedel pairs used in the refinement | 1588 of Friedel pairs used in the refinement |
Absolute structure parameter | 0.49 (2) | 0.52 (3) |
† Symmetry operations: (1) x1, x2, x3, x4, x5; (2) −x2, x1, x3, −x5, x4; (3) −x1+1/2, x2+1/2, x3, x5, x4; (4) −x1, −x2, x3, −x4, −x5; (5) −x2+1/2, −x1+1/2, x3, −x4, x5; (6) x2, −x1, x3, x5, −x4; (7) x1+1/2, −x2+1/2, x3, −x5, −x4; (8) x2+1/2, x1+1/2, x3, x4, −x5; (9) x1, x2, x3+1/2, x4+1/2, x5+1/2; (10) −x2, x1, x3+1/2, −x5+1/2, x4+1/2; (11) −x1+1/2, x2+1/2, x3+1/2, x5+1/2, x4+1/2; (12) −x1, −x2, x3+1/2, −x4+1/2, −x5+1/2; (13) −x2+1/2, −x1+1/2, x3+1/2, −x4+1/2, x5+1/2; (14) x2, −x1, x3+1/2, x5+1/2, −x4+1/2; (15) x1+1/2, −x2+1/2, x3+1/2, −x5+1/2, −x4+1/2; (16) x2+1/2, x1+1/2, x3+1/2, x4+1/2, −x5+1/2.
‡ Symmetry operations: (1) x1, x2, x3, x4, x5; (2) −x2, x1, x3, −x5, x4; (3) −x1+1/2, x2+1/2, x3, x5, x4; (4) −x1, −x2, x3, −x4, −x5; (5) −x2+1/2, −x1+1/2, x3, −x4, x5; (6) x2, −x1, x3, x5, −x4; (7) x1+1/2, −x2+1/2, x3, −x5, −x4; (8) x2+1/2, x1+1/2, x3, x4, −x5; (9) x1, x2, x3+1/2, x4+1/2, x5+1/2; (10) −x2, x1, x3+1/2, −x5+1/2, x4+1/2; (11) −x1+1/2, x2+1/2, x3+1/2, x5+1/2, x4+1/2; (12) −x1, −x2, x3+1/2, −x4+1/2, −x5+1/2; (13) −x2+1/2, −x1+1/2, x3+1/2, −x4+1/2, x5+1/2; (14) x2, −x1, x3+1/2, x5+1/2, −x4+1/2; (15) x1+1/2, −x2+1/2, x3+1/2, −x5+1/2, −x4+1/2; (16) x2+1/2, x1+1/2, x3+1/2, x4+1/2, −x5+1/2.
Computer programs: CrysAlis PRO, Oxford Diffraction Ltd., Version 1.171.34.9 (release 08-12-2009 CrysAlis171 .NET) (compiled Dec 8 2009,17:31:18), Jana2006, Diamond 3.0.