Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536807025457/sj2319sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S1600536807025457/sj2319Isup2.hkl |
CCDC reference: 650573
Nd(ClO4)3.6H2O (0.2891 g, 0.525 mmol), NaSCN (0.0872 g, 1.08 mmol), pyridine N-oxide (0.0502 g, 0.528 mmol) and Na(CH3COO) (0.0435 g, 0.530 mmol) were each dissolved in 5 ml of water. The solutions were then mixed together and stirred for a few minutes. Colourless transparent single crystals were obtained on allowing the solution to stand for two weeks at room temperature.
The H atoms from H2O were found in a difference Fourier map and fixed with d(O—H) = 0.8200–0.8502 Å, Uiso(H) = 1.5eq(O). Other H atoms were placed in calculated positions, and refined as riding, with C—H = 0.93 Å, Uiso(H) = 1.2eq(C) for the pyridine ring; C—H = 0.96 Å, Uiso(H) = 1.5eq(C) for the methyl groups.
Acetate, thiocyanate and pyridine N-oxide or its derivatives are all known to function as bridging ligands (Kato et al., 1964; Zhang et al., 2006), and we are interested in complexes with mixed bridge ligands which led to the synthesis of the title complex (I) and we report its structure here, Fig. 1. In the binuclear structure acetate acts as a bridging ligand, whereas thiocyanate, water and pyridine N-oxide only function as terminal ligands. The Nd and bridging acetate O atoms form a four-membered ring by virtue of the crystallographic inversion center which is at the centroid of the ring. The distance between the bridged Nd(III) ions is 4.4167 (7) Å, and atoms Nd1, Nd1i, O3 and O3i are strictly coplanar (i = -x + 2, -y + 2, -z + 1). An extensive set of O—H···O, O—H···N and O—H···S hydrogen bonds (Table 1) connect the binuclear units into a three-dimensional supermolecular structure.
For related structures, see: Kato et al. (1964); Zhang et al. (2006).
Data collection: SMART (Bruker, 1997); cell refinement: SAINT (Bruker, 1997); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Bruker, 2001); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Fig. 1. Binuclear structure of (I) showing the atom numbering scheme with thermal ellipsoids drawn at the 30% probability level. [Symmetry codes: (i) -x + 2, -y + 2, -z + 1]. |
[Nd2(C2H3O2)2(NCS)4(C5H5NO)2(H2O)6] | F(000) = 916 |
Mr = 937.18 | Dx = 1.891 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 3146 reflections |
a = 9.1588 (15) Å | θ = 2.2–26.8° |
b = 16.185 (3) Å | µ = 3.43 mm−1 |
c = 11.3892 (18) Å | T = 298 K |
β = 102.813 (2)° | Prism, colourless |
V = 1646.3 (5) Å3 | 0.56 × 0.07 × 0.06 mm |
Z = 2 |
Bruker SMART APEX CCD area-detector diffractometer | 2900 independent reflections |
Radiation source: fine-focus sealed tube | 2545 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.029 |
φ and ω scans | θmax = 25.0°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −10→10 |
Tmin = 0.249, Tmax = 0.821 | k = −19→17 |
6827 measured reflections | l = −13→13 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.031 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.071 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.0303P)2 + 1.869P] where P = (Fo2 + 2Fc2)/3 |
2900 reflections | (Δ/σ)max = 0.001 |
191 parameters | Δρmax = 1.39 e Å−3 |
9 restraints | Δρmin = −0.95 e Å−3 |
[Nd2(C2H3O2)2(NCS)4(C5H5NO)2(H2O)6] | V = 1646.3 (5) Å3 |
Mr = 937.18 | Z = 2 |
Monoclinic, P21/n | Mo Kα radiation |
a = 9.1588 (15) Å | µ = 3.43 mm−1 |
b = 16.185 (3) Å | T = 298 K |
c = 11.3892 (18) Å | 0.56 × 0.07 × 0.06 mm |
β = 102.813 (2)° |
Bruker SMART APEX CCD area-detector diffractometer | 2900 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2545 reflections with I > 2σ(I) |
Tmin = 0.249, Tmax = 0.821 | Rint = 0.029 |
6827 measured reflections |
R[F2 > 2σ(F2)] = 0.031 | 9 restraints |
wR(F2) = 0.071 | H-atom parameters constrained |
S = 1.02 | Δρmax = 1.39 e Å−3 |
2900 reflections | Δρmin = −0.95 e Å−3 |
191 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
Nd1 | 0.81351 (3) | 0.914089 (14) | 0.50289 (2) | 0.02859 (10) | |
S2 | 0.9773 (2) | 0.60651 (9) | 0.60836 (14) | 0.0636 (5) | |
S1 | 0.4319 (2) | 0.85963 (10) | 0.77853 (17) | 0.0731 (5) | |
C6 | 0.8144 (5) | 1.0972 (3) | 0.5558 (4) | 0.0324 (11) | |
O3 | 0.9353 (3) | 1.07210 (19) | 0.5326 (3) | 0.0367 (8) | |
N1 | 0.9405 (4) | 0.9164 (2) | 0.8172 (3) | 0.0355 (9) | |
O6 | 0.5523 (4) | 0.9109 (2) | 0.3919 (3) | 0.0516 (10) | |
H9 | 0.4761 | 0.9210 | 0.4205 | 0.077* | |
H8 | 0.5265 | 0.9077 | 0.3156 | 0.077* | |
O1 | 0.9538 (4) | 0.9411 (2) | 0.7079 (3) | 0.0465 (9) | |
O2 | 0.7084 (3) | 1.0477 (2) | 0.5525 (3) | 0.0384 (8) | |
O5 | 0.7805 (5) | 0.8141 (2) | 0.3268 (3) | 0.0626 (11) | |
H10 | 0.7260 | 0.8323 | 0.2620 | 0.094* | |
H11 | 0.8307 | 0.7728 | 0.3133 | 0.094* | |
N3 | 0.6407 (5) | 0.8676 (3) | 0.6364 (4) | 0.0471 (11) | |
N2 | 0.9058 (6) | 0.7726 (3) | 0.5737 (5) | 0.0645 (14) | |
C9 | 0.9357 (6) | 0.7034 (4) | 0.5892 (4) | 0.0447 (13) | |
C2 | 1.0314 (6) | 0.8571 (3) | 0.8735 (5) | 0.0514 (14) | |
H2 | 1.0996 | 0.8315 | 0.8358 | 0.062* | |
C7 | 0.7971 (7) | 1.1846 (4) | 0.5870 (7) | 0.076 (2) | |
H7A | 0.6963 | 1.1942 | 0.5948 | 0.114* | |
H7B | 0.8186 | 1.2194 | 0.5246 | 0.114* | |
H7C | 0.8653 | 1.1972 | 0.6618 | 0.114* | |
C1 | 1.0225 (7) | 0.8348 (4) | 0.9877 (6) | 0.0655 (18) | |
H1 | 1.0855 | 0.7939 | 1.0281 | 0.079* | |
O4 | 0.7882 (4) | 0.9858 (2) | 0.3048 (3) | 0.0408 (8) | |
H7 | 0.7158 | 1.0170 | 0.2940 | 0.061* | |
H6 | 0.8692 | 1.0094 | 0.2993 | 0.061* | |
C3 | 0.8400 (6) | 0.9531 (3) | 0.8683 (5) | 0.0438 (12) | |
H3 | 0.7771 | 0.9936 | 0.8268 | 0.053* | |
C4 | 0.8298 (7) | 0.9311 (4) | 0.9810 (5) | 0.0622 (18) | |
H4 | 0.7595 | 0.9565 | 1.0167 | 0.075* | |
C5 | 0.9224 (8) | 0.8719 (5) | 1.0422 (6) | 0.077 (2) | |
H5 | 0.9169 | 0.8571 | 1.1200 | 0.092* | |
C8 | 0.5514 (5) | 0.8627 (3) | 0.6923 (4) | 0.0358 (11) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Nd1 | 0.02128 (15) | 0.03128 (15) | 0.03543 (16) | 0.00006 (10) | 0.01103 (11) | 0.00093 (11) |
S2 | 0.0951 (13) | 0.0463 (9) | 0.0496 (9) | 0.0206 (8) | 0.0162 (9) | 0.0095 (7) |
S1 | 0.0744 (12) | 0.0619 (10) | 0.1033 (13) | 0.0212 (8) | 0.0629 (11) | 0.0405 (10) |
C6 | 0.023 (3) | 0.032 (3) | 0.044 (3) | 0.0065 (19) | 0.012 (2) | −0.003 (2) |
O3 | 0.0235 (17) | 0.0415 (19) | 0.048 (2) | 0.0027 (14) | 0.0133 (15) | 0.0014 (15) |
N1 | 0.030 (2) | 0.041 (2) | 0.035 (2) | −0.0081 (18) | 0.0058 (18) | 0.0038 (18) |
O6 | 0.0186 (17) | 0.090 (3) | 0.048 (2) | −0.0006 (17) | 0.0123 (16) | −0.013 (2) |
O1 | 0.037 (2) | 0.070 (2) | 0.0341 (18) | −0.0149 (18) | 0.0091 (16) | 0.0106 (17) |
O2 | 0.0251 (18) | 0.0377 (19) | 0.057 (2) | −0.0008 (15) | 0.0186 (16) | −0.0071 (16) |
O5 | 0.072 (3) | 0.051 (2) | 0.059 (2) | 0.020 (2) | 0.002 (2) | −0.015 (2) |
N3 | 0.041 (3) | 0.054 (3) | 0.049 (3) | −0.005 (2) | 0.015 (2) | 0.008 (2) |
N2 | 0.075 (4) | 0.051 (3) | 0.072 (3) | 0.018 (3) | 0.026 (3) | 0.020 (3) |
C9 | 0.043 (3) | 0.055 (4) | 0.037 (3) | 0.007 (3) | 0.009 (2) | 0.009 (3) |
C2 | 0.045 (3) | 0.049 (3) | 0.061 (4) | 0.007 (3) | 0.013 (3) | 0.007 (3) |
C7 | 0.049 (4) | 0.043 (4) | 0.144 (7) | −0.008 (3) | 0.036 (4) | −0.025 (4) |
C1 | 0.062 (4) | 0.064 (4) | 0.063 (4) | −0.005 (3) | −0.003 (3) | 0.026 (3) |
O4 | 0.0265 (18) | 0.048 (2) | 0.048 (2) | −0.0047 (15) | 0.0069 (15) | 0.0086 (16) |
C3 | 0.033 (3) | 0.049 (3) | 0.050 (3) | −0.001 (2) | 0.010 (2) | −0.004 (3) |
C4 | 0.052 (4) | 0.092 (5) | 0.049 (4) | −0.014 (3) | 0.025 (3) | −0.013 (3) |
C5 | 0.075 (5) | 0.110 (6) | 0.046 (4) | −0.032 (5) | 0.017 (4) | 0.016 (4) |
C8 | 0.035 (3) | 0.037 (3) | 0.036 (3) | −0.002 (2) | 0.010 (2) | 0.007 (2) |
Nd1—O3i | 2.433 (3) | O6—H8 | 0.8502 |
Nd1—O1 | 2.441 (3) | O5—H10 | 0.8473 |
Nd1—O6 | 2.446 (3) | O5—H11 | 0.8439 |
Nd1—O2 | 2.483 (3) | N3—C8 | 1.145 (6) |
Nd1—O4 | 2.502 (3) | N2—C9 | 1.157 (7) |
Nd1—N2 | 2.511 (5) | C2—C1 | 1.369 (8) |
Nd1—N3 | 2.540 (4) | C2—H2 | 0.9300 |
Nd1—O5 | 2.542 (4) | C7—H7A | 0.9600 |
Nd1—O3 | 2.781 (3) | C7—H7B | 0.9600 |
S2—C9 | 1.617 (6) | C7—H7C | 0.9600 |
S1—C8 | 1.626 (5) | C1—C5 | 1.357 (10) |
C6—O2 | 1.253 (5) | C1—H1 | 0.9300 |
C6—O3 | 1.261 (5) | O4—H7 | 0.8200 |
C6—C7 | 1.476 (7) | O4—H6 | 0.8492 |
O3—Nd1i | 2.433 (3) | C3—C4 | 1.354 (8) |
N1—C3 | 1.333 (6) | C3—H3 | 0.9300 |
N1—C2 | 1.338 (6) | C4—C5 | 1.365 (10) |
N1—O1 | 1.339 (5) | C4—H4 | 0.9300 |
O6—H9 | 0.8483 | C5—H5 | 0.9300 |
O3i—Nd1—O1 | 79.97 (11) | Nd1i—O3—Nd1 | 115.65 (11) |
O3i—Nd1—O6 | 140.26 (11) | C3—N1—C2 | 121.8 (5) |
O1—Nd1—O6 | 138.13 (12) | C3—N1—O1 | 119.2 (4) |
O3i—Nd1—O2 | 112.74 (10) | C2—N1—O1 | 119.0 (4) |
O1—Nd1—O2 | 76.98 (12) | Nd1—O6—H9 | 126.2 |
O6—Nd1—O2 | 75.61 (11) | Nd1—O6—H8 | 123.2 |
O3i—Nd1—O4 | 73.13 (10) | H9—O6—H8 | 109.8 |
O1—Nd1—O4 | 134.66 (11) | N1—O1—Nd1 | 134.3 (3) |
O6—Nd1—O4 | 70.08 (11) | C6—O2—Nd1 | 103.1 (3) |
O2—Nd1—O4 | 80.67 (11) | Nd1—O5—H10 | 114.2 |
O3i—Nd1—N2 | 82.75 (14) | Nd1—O5—H11 | 132.3 |
O1—Nd1—N2 | 77.77 (15) | H10—O5—H11 | 110.8 |
O6—Nd1—N2 | 111.58 (16) | C8—N3—Nd1 | 165.9 (4) |
O2—Nd1—N2 | 147.25 (14) | C9—N2—Nd1 | 169.4 (5) |
O4—Nd1—N2 | 132.08 (14) | N2—C9—S2 | 179.0 (5) |
O3i—Nd1—N3 | 149.81 (12) | N1—C2—C1 | 118.9 (6) |
O1—Nd1—N3 | 75.30 (12) | N1—C2—H2 | 120.5 |
O6—Nd1—N3 | 68.60 (13) | C1—C2—H2 | 120.5 |
O2—Nd1—N3 | 78.31 (13) | C6—C7—H7A | 109.5 |
O4—Nd1—N3 | 137.05 (12) | C6—C7—H7B | 109.5 |
N2—Nd1—N3 | 75.37 (16) | H7A—C7—H7B | 109.5 |
O3i—Nd1—O5 | 83.04 (12) | C6—C7—H7C | 109.5 |
O1—Nd1—O5 | 144.44 (13) | H7A—C7—H7C | 109.5 |
O6—Nd1—O5 | 69.37 (12) | H7B—C7—H7C | 109.5 |
O2—Nd1—O5 | 138.57 (12) | C5—C1—C2 | 120.5 (6) |
O4—Nd1—O5 | 67.24 (12) | C5—C1—H1 | 119.8 |
N2—Nd1—O5 | 69.24 (15) | C2—C1—H1 | 119.8 |
N3—Nd1—O5 | 107.62 (14) | Nd1—O4—H7 | 109.4 |
O3i—Nd1—O3 | 64.35 (12) | Nd1—O4—H6 | 111.6 |
O1—Nd1—O3 | 66.88 (11) | H7—O4—H6 | 113.8 |
O6—Nd1—O3 | 113.70 (11) | N1—C3—C4 | 119.8 (6) |
O2—Nd1—O3 | 48.43 (10) | N1—C3—H3 | 120.1 |
O4—Nd1—O3 | 68.72 (10) | C4—C3—H3 | 120.1 |
N2—Nd1—O3 | 134.63 (15) | C3—C4—C5 | 120.2 (6) |
N3—Nd1—O3 | 119.09 (12) | C3—C4—H4 | 119.9 |
O5—Nd1—O3 | 130.97 (12) | C5—C4—H4 | 119.9 |
O2—C6—O3 | 119.9 (4) | C1—C5—C4 | 118.9 (6) |
O2—C6—C7 | 119.8 (4) | C1—C5—H5 | 120.6 |
O3—C6—C7 | 120.3 (4) | C4—C5—H5 | 120.6 |
C6—O3—Nd1i | 155.7 (3) | N3—C8—S1 | 176.2 (5) |
C6—O3—Nd1 | 88.6 (3) | ||
O2—C6—O3—Nd1i | 174.7 (5) | O1—Nd1—O2—C6 | 69.5 (3) |
C7—C6—O3—Nd1i | −5.3 (11) | O6—Nd1—O2—C6 | −142.5 (3) |
O2—C6—O3—Nd1 | −1.7 (4) | O4—Nd1—O2—C6 | −70.8 (3) |
C7—C6—O3—Nd1 | 178.4 (5) | N2—Nd1—O2—C6 | 109.9 (4) |
O3i—Nd1—O3—C6 | 178.3 (3) | N3—Nd1—O2—C6 | 146.9 (3) |
O1—Nd1—O3—C6 | −92.0 (3) | O5—Nd1—O2—C6 | −109.6 (3) |
O6—Nd1—O3—C6 | 42.2 (3) | O3—Nd1—O2—C6 | −1.0 (3) |
O2—Nd1—O3—C6 | 1.0 (3) | O3i—Nd1—N3—C8 | 129.8 (16) |
O4—Nd1—O3—C6 | 97.5 (3) | O1—Nd1—N3—C8 | 93.8 (16) |
N2—Nd1—O3—C6 | −133.8 (3) | O6—Nd1—N3—C8 | −64.6 (16) |
N3—Nd1—O3—C6 | −35.6 (3) | O2—Nd1—N3—C8 | 14.4 (16) |
O5—Nd1—O3—C6 | 124.8 (3) | O4—Nd1—N3—C8 | −47.9 (17) |
O3i—Nd1—O3—Nd1i | 0.0 | N2—Nd1—N3—C8 | 174.7 (17) |
O1—Nd1—O3—Nd1i | 89.71 (15) | O5—Nd1—N3—C8 | −123.1 (16) |
O6—Nd1—O3—Nd1i | −136.12 (13) | O3—Nd1—N3—C8 | 41.5 (17) |
O2—Nd1—O3—Nd1i | −177.4 (2) | O3i—Nd1—N2—C9 | −102 (3) |
O4—Nd1—O3—Nd1i | −80.88 (14) | O1—Nd1—N2—C9 | 177 (3) |
N2—Nd1—O3—Nd1i | 47.9 (2) | O6—Nd1—N2—C9 | 40 (3) |
N3—Nd1—O3—Nd1i | 146.10 (14) | O2—Nd1—N2—C9 | 137 (3) |
O5—Nd1—O3—Nd1i | −53.50 (19) | O4—Nd1—N2—C9 | −42 (3) |
C3—N1—O1—Nd1 | −79.8 (5) | N3—Nd1—N2—C9 | 99 (3) |
C2—N1—O1—Nd1 | 102.1 (5) | O5—Nd1—N2—C9 | −17 (3) |
O3i—Nd1—O1—N1 | −146.6 (4) | O3—Nd1—N2—C9 | −144 (3) |
O6—Nd1—O1—N1 | 46.9 (5) | Nd1—N2—C9—S2 | 30 (34) |
O2—Nd1—O1—N1 | 97.1 (4) | C3—N1—C2—C1 | −1.2 (8) |
O4—Nd1—O1—N1 | 159.5 (4) | O1—N1—C2—C1 | 176.9 (5) |
N2—Nd1—O1—N1 | −61.9 (4) | N1—C2—C1—C5 | 0.4 (9) |
N3—Nd1—O1—N1 | 16.0 (4) | C2—N1—C3—C4 | 0.9 (8) |
O5—Nd1—O1—N1 | −83.9 (5) | O1—N1—C3—C4 | −177.2 (5) |
O3—Nd1—O1—N1 | 147.2 (4) | N1—C3—C4—C5 | 0.2 (9) |
O3—C6—O2—Nd1 | 1.9 (5) | C2—C1—C5—C4 | 0.7 (10) |
C7—C6—O2—Nd1 | −178.1 (5) | C3—C4—C5—C1 | −1.0 (10) |
O3i—Nd1—O2—C6 | −3.6 (3) | Nd1—N3—C8—S1 | −75 (8) |
Symmetry code: (i) −x+2, −y+2, −z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
O4—H6···O1i | 0.85 | 1.83 | 2.675 (5) | 178 |
O6—H9···O2ii | 0.85 | 1.85 | 2.686 (4) | 167 |
O6—H8···S2iii | 0.85 | 2.31 | 3.162 (4) | 175 |
O5—H10···S2iii | 0.85 | 2.73 | 3.534 (4) | 159 |
O5—H11···S1iv | 0.84 | 2.40 | 3.236 (4) | 169 |
O4—H7···S1ii | 0.82 | 2.45 | 3.220 (4) | 157 |
O4—H6···N1i | 0.85 | 2.70 | 3.484 (5) | 155 |
Symmetry codes: (i) −x+2, −y+2, −z+1; (ii) −x+1, −y+2, −z+1; (iii) x−1/2, −y+3/2, z−1/2; (iv) x+1/2, −y+3/2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | [Nd2(C2H3O2)2(NCS)4(C5H5NO)2(H2O)6] |
Mr | 937.18 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 298 |
a, b, c (Å) | 9.1588 (15), 16.185 (3), 11.3892 (18) |
β (°) | 102.813 (2) |
V (Å3) | 1646.3 (5) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 3.43 |
Crystal size (mm) | 0.56 × 0.07 × 0.06 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD area-detector |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.249, 0.821 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6827, 2900, 2545 |
Rint | 0.029 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.031, 0.071, 1.02 |
No. of reflections | 2900 |
No. of parameters | 191 |
No. of restraints | 9 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.39, −0.95 |
Computer programs: SMART (Bruker, 1997), SAINT (Bruker, 1997), SAINT, SHELXTL (Bruker, 2001), SHELXTL.
D—H···A | D—H | H···A | D···A | D—H···A |
O4—H6···O1i | 0.85 | 1.83 | 2.675 (5) | 178.2 |
O6—H9···O2ii | 0.85 | 1.85 | 2.686 (4) | 166.7 |
O6—H8···S2iii | 0.85 | 2.31 | 3.162 (4) | 174.8 |
O5—H10···S2iii | 0.85 | 2.73 | 3.534 (4) | 158.6 |
O5—H11···S1iv | 0.84 | 2.40 | 3.236 (4) | 169.0 |
O4—H7···S1ii | 0.82 | 2.45 | 3.220 (4) | 156.8 |
O4—H6···N1i | 0.85 | 2.70 | 3.484 (5) | 155.2 |
Symmetry codes: (i) −x+2, −y+2, −z+1; (ii) −x+1, −y+2, −z+1; (iii) x−1/2, −y+3/2, z−1/2; (iv) x+1/2, −y+3/2, z−1/2. |
Acetate, thiocyanate and pyridine N-oxide or its derivatives are all known to function as bridging ligands (Kato et al., 1964; Zhang et al., 2006), and we are interested in complexes with mixed bridge ligands which led to the synthesis of the title complex (I) and we report its structure here, Fig. 1. In the binuclear structure acetate acts as a bridging ligand, whereas thiocyanate, water and pyridine N-oxide only function as terminal ligands. The Nd and bridging acetate O atoms form a four-membered ring by virtue of the crystallographic inversion center which is at the centroid of the ring. The distance between the bridged Nd(III) ions is 4.4167 (7) Å, and atoms Nd1, Nd1i, O3 and O3i are strictly coplanar (i = -x + 2, -y + 2, -z + 1). An extensive set of O—H···O, O—H···N and O—H···S hydrogen bonds (Table 1) connect the binuclear units into a three-dimensional supermolecular structure.