metal-organic compounds
Triaquachlorido(18-crown-6)barium chloride
aOrdered Matter Science Research Center, College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, People's Republic of China
*Correspondence e-mail: chemcrystal66@yahoo.com.cn
In the title compound, [BaCl(C12H24O6)(H2O)3]Cl, the BaII atom, the coordinating and free Cl− anions, one coordinating water molecule and two O atoms of an 18-crown-6 molecule lie on a mirror plane. The environment of the ten-coordinate Ba2+ ion is defined by one Cl atom, three water molecules and six O atoms from the macrocyclic ether. The macrocycle adopts a conformation with an approximate D3d symmetry. In the crystal, O—H⋯Cl hydrogen bonds link the complex cations and Cl− anions into a two-dimensional network parallel to (010). An intramolecular O—H⋯Cl hydrogen bond is also present.
Related literature
For the properties and structures of related compounds, see: Fu et al. (2007, 2008, 2009); Fu & Xiong (2008). For the ferroelectric properties of related derivatives, see: Fu et al. (2011a,b); Fu, Zhang, Cai, Ge et al. (2011).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2005); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: XP in SHELXTL and DIAMOND (Brandenburg, 1999); software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536812004990/hy2512sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812004990/hy2512Isup2.hkl
Commercial 18-crown-6 (6 mmol), HCl (10 mmol) and BaCl2 (6 mmol) were dissolved in a water/EtOH (v/v 1:1) solution. The solvent was slowly evaporated in air, affording colourless block-shaped crystals of the title compound suitable for X-ray analysis.
The
of the title compound as a function of temperature indicates that the permittivity is basically temperature-independent, suggesting that this compound should not be a real or there may be no distinct occurred within the measured temperature range. Similarly, the as a function of temperature also goes smoothly below 400 K, and there is no dielectric anomaly observed (dielectric constant ranging from 5.5 to 7.1).H atoms attached to C atoms were positioned geometrically and treated as riding, with C—H = 0.97 Å and with Uiso(H) = 1.2Ueq(C). H atoms of the water molecules were located from a difference Fourier map and refined as riding, with O—H = 0.82 Å and with Uiso(H) = 1.5Ueq(O).
Data collection: CrystalClear (Rigaku, 2005); cell
CrystalClear (Rigaku, 2005); data reduction: CrystalClear (Rigaku, 2005); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).[BaCl(C12H24O6)(H2O)3]Cl | F(000) = 1056 |
Mr = 526.59 | Dx = 1.684 Mg m−3 |
Orthorhombic, Pnma | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2n | Cell parameters from 2478 reflections |
a = 14.962 (3) Å | θ = 3.0–27.5° |
b = 13.416 (3) Å | µ = 2.21 mm−1 |
c = 10.347 (2) Å | T = 293 K |
V = 2077.0 (7) Å3 | Block, colourless |
Z = 4 | 0.30 × 0.25 × 0.15 mm |
Rigaku Mercury2 CCD diffractometer | 2478 independent reflections |
Radiation source: fine-focus sealed tube | 2284 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.038 |
Detector resolution: 13.6612 pixels mm-1 | θmax = 27.5°, θmin = 3.0° |
ω scans | h = −19→19 |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | k = −17→17 |
Tmin = 0.90, Tmax = 1.00 | l = −13→13 |
20436 measured reflections |
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)] = 0.026 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.047 | H-atom parameters constrained |
S = 1.20 | w = 1/[σ2(Fo2) + (0.0112P)2 + 1.2653P] where P = (Fo2 + 2Fc2)/3 |
2478 reflections | (Δ/σ)max < 0.001 |
118 parameters | Δρmax = 0.49 e Å−3 |
4 restraints | Δρmin = −0.80 e Å−3 |
[BaCl(C12H24O6)(H2O)3]Cl | V = 2077.0 (7) Å3 |
Mr = 526.59 | Z = 4 |
Orthorhombic, Pnma | Mo Kα radiation |
a = 14.962 (3) Å | µ = 2.21 mm−1 |
b = 13.416 (3) Å | T = 293 K |
c = 10.347 (2) Å | 0.30 × 0.25 × 0.15 mm |
Rigaku Mercury2 CCD diffractometer | 2478 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | 2284 reflections with I > 2σ(I) |
Tmin = 0.90, Tmax = 1.00 | Rint = 0.038 |
20436 measured reflections |
R[F2 > 2σ(F2)] = 0.026 | 4 restraints |
wR(F2) = 0.047 | H-atom parameters constrained |
S = 1.20 | Δρmax = 0.49 e Å−3 |
2478 reflections | Δρmin = −0.80 e Å−3 |
118 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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 | ||
Ba1 | 0.330565 (12) | 0.2500 | 0.419354 (17) | 0.02669 (6) | |
Cl2 | 0.17702 (6) | 0.2500 | 0.19266 (9) | 0.0506 (2) | |
Cl1 | 0.07097 (6) | 0.2500 | 0.68085 (10) | 0.0498 (2) | |
O2 | 0.35766 (12) | 0.07191 (13) | 0.56515 (16) | 0.0417 (4) | |
O3 | 0.38055 (12) | 0.06918 (14) | 0.29713 (17) | 0.0443 (4) | |
C1 | 0.33416 (19) | 0.1618 (2) | 0.7592 (2) | 0.0520 (7) | |
H1A | 0.3012 | 0.1635 | 0.8398 | 0.062* | |
H1B | 0.3974 | 0.1581 | 0.7792 | 0.062* | |
C5 | 0.4373 (2) | 0.0747 (3) | 0.1869 (3) | 0.0627 (9) | |
H5A | 0.4323 | 0.0140 | 0.1365 | 0.075* | |
H5B | 0.4990 | 0.0819 | 0.2142 | 0.075* | |
C3 | 0.3403 (2) | −0.01562 (19) | 0.4902 (3) | 0.0542 (7) | |
H3A | 0.2785 | −0.0162 | 0.4621 | 0.065* | |
H3B | 0.3510 | −0.0747 | 0.5419 | 0.065* | |
C2 | 0.30708 (19) | 0.0729 (2) | 0.6825 (3) | 0.0516 (7) | |
H2A | 0.3185 | 0.0126 | 0.7315 | 0.062* | |
H2B | 0.2437 | 0.0760 | 0.6631 | 0.062* | |
C4 | 0.4007 (2) | −0.0152 (2) | 0.3759 (3) | 0.0574 (8) | |
H4A | 0.4625 | −0.0120 | 0.4042 | 0.069* | |
H4B | 0.3926 | −0.0760 | 0.3266 | 0.069* | |
C6 | 0.4108 (2) | 0.1612 (3) | 0.1076 (3) | 0.0597 (9) | |
H6A | 0.4462 | 0.1633 | 0.0291 | 0.072* | |
H6B | 0.3483 | 0.1556 | 0.0836 | 0.072* | |
O1W | 0.50755 (16) | 0.2500 | 0.4986 (3) | 0.0530 (7) | |
H1WA | 0.5090 | 0.2500 | 0.5778 | 0.079* | |
H1WB | 0.5557 | 0.2500 | 0.4606 | 0.079* | |
O4 | 0.42471 (17) | 0.2500 | 0.1809 (2) | 0.0472 (7) | |
O1 | 0.31620 (16) | 0.2500 | 0.6863 (2) | 0.0402 (6) | |
O2W | 0.16525 (13) | 0.13030 (15) | 0.45333 (19) | 0.0556 (5) | |
H2WA | 0.1351 | 0.1514 | 0.5136 | 0.083* | |
H2WB | 0.1453 | 0.1510 | 0.3846 | 0.083* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ba1 | 0.02774 (10) | 0.02935 (10) | 0.02298 (9) | 0.000 | −0.00053 (8) | 0.000 |
Cl2 | 0.0459 (5) | 0.0653 (6) | 0.0405 (5) | 0.000 | −0.0125 (4) | 0.000 |
Cl1 | 0.0445 (5) | 0.0589 (6) | 0.0461 (5) | 0.000 | 0.0038 (4) | 0.000 |
O2 | 0.0435 (9) | 0.0375 (10) | 0.0443 (10) | −0.0053 (8) | −0.0036 (8) | 0.0071 (8) |
O3 | 0.0418 (10) | 0.0440 (10) | 0.0473 (11) | 0.0074 (9) | −0.0011 (8) | −0.0128 (9) |
C1 | 0.0523 (16) | 0.075 (2) | 0.0287 (12) | −0.0107 (16) | −0.0043 (13) | 0.0145 (14) |
C5 | 0.0509 (17) | 0.074 (2) | 0.063 (2) | 0.0052 (16) | 0.0121 (15) | −0.0312 (18) |
C3 | 0.0643 (19) | 0.0293 (13) | 0.0690 (19) | −0.0036 (14) | −0.0141 (17) | 0.0033 (13) |
C2 | 0.0533 (16) | 0.0567 (18) | 0.0450 (16) | −0.0140 (14) | −0.0026 (13) | 0.0209 (14) |
C4 | 0.0602 (19) | 0.0411 (16) | 0.071 (2) | 0.0181 (14) | −0.0164 (16) | −0.0152 (15) |
C6 | 0.0512 (17) | 0.094 (3) | 0.0336 (15) | −0.0055 (17) | 0.0081 (13) | −0.0204 (16) |
O1W | 0.0313 (13) | 0.079 (2) | 0.0484 (15) | 0.000 | 0.0028 (12) | 0.000 |
O4 | 0.0467 (15) | 0.0683 (18) | 0.0267 (13) | 0.000 | 0.0027 (11) | 0.000 |
O1 | 0.0423 (14) | 0.0581 (16) | 0.0203 (11) | 0.000 | −0.0024 (10) | 0.000 |
O2W | 0.0542 (12) | 0.0543 (12) | 0.0582 (12) | 0.0080 (10) | 0.0028 (10) | 0.0049 (10) |
Ba1—O1 | 2.770 (2) | C5—H5A | 0.9700 |
Ba1—O1W | 2.772 (3) | C5—H5B | 0.9700 |
Ba1—O3 | 2.8360 (18) | C3—C4 | 1.488 (4) |
Ba1—O3i | 2.8360 (18) | C3—H3A | 0.9700 |
Ba1—O4 | 2.841 (2) | C3—H3B | 0.9700 |
Ba1—O2i | 2.8545 (17) | C2—H2A | 0.9700 |
Ba1—O2 | 2.8545 (17) | C2—H2B | 0.9700 |
Ba1—O2W | 2.970 (2) | C4—H4A | 0.9700 |
Ba1—O2Wi | 2.970 (2) | C4—H4B | 0.9700 |
Ba1—Cl2 | 3.2831 (10) | C6—O4 | 1.427 (3) |
O2—C2 | 1.431 (3) | C6—H6A | 0.9700 |
O2—C3 | 1.431 (3) | C6—H6B | 0.9700 |
O3—C5 | 1.424 (3) | O1W—H1WA | 0.8201 |
O3—C4 | 1.427 (3) | O1W—H1WB | 0.8201 |
C1—O1 | 1.429 (3) | O4—C6i | 1.427 (3) |
C1—C2 | 1.488 (4) | O1—C1i | 1.429 (3) |
C1—H1A | 0.9700 | O2W—H2WA | 0.8200 |
C1—H1B | 0.9700 | O2W—H2WB | 0.8200 |
C5—C6 | 1.476 (4) | ||
O1—Ba1—O1W | 77.25 (7) | C4—O3—Ba1 | 118.64 (15) |
O1—Ba1—O3 | 117.71 (4) | O1—C1—C2 | 109.3 (2) |
O1W—Ba1—O3 | 83.10 (5) | O1—C1—H1A | 109.8 |
O1—Ba1—O3i | 117.71 (4) | C2—C1—H1A | 109.8 |
O1W—Ba1—O3i | 83.10 (5) | O1—C1—H1B | 109.8 |
O3—Ba1—O3i | 117.60 (8) | C2—C1—H1B | 109.8 |
O1—Ba1—O4 | 154.72 (7) | H1A—C1—H1B | 108.3 |
O1W—Ba1—O4 | 77.47 (8) | O3—C5—C6 | 109.0 (2) |
O3—Ba1—O4 | 58.80 (4) | O3—C5—H5A | 109.9 |
O3i—Ba1—O4 | 58.80 (4) | C6—C5—H5A | 109.9 |
O1—Ba1—O2i | 58.95 (4) | O3—C5—H5B | 109.9 |
O1W—Ba1—O2i | 73.03 (4) | C6—C5—H5B | 109.9 |
O3—Ba1—O2i | 156.08 (5) | H5A—C5—H5B | 108.3 |
O3i—Ba1—O2i | 58.82 (5) | O2—C3—C4 | 108.5 (2) |
O4—Ba1—O2i | 112.86 (4) | O2—C3—H3A | 110.0 |
O1—Ba1—O2 | 58.95 (4) | C4—C3—H3A | 110.0 |
O1W—Ba1—O2 | 73.03 (4) | O2—C3—H3B | 110.0 |
O3—Ba1—O2 | 58.82 (5) | C4—C3—H3B | 110.0 |
O3i—Ba1—O2 | 156.08 (5) | H3A—C3—H3B | 108.4 |
O4—Ba1—O2 | 112.86 (4) | O2—C2—C1 | 108.4 (2) |
O2i—Ba1—O2 | 113.65 (7) | O2—C2—H2A | 110.0 |
O1—Ba1—O2W | 79.48 (6) | C1—C2—H2A | 110.0 |
O1W—Ba1—O2W | 139.52 (5) | O2—C2—H2B | 110.0 |
O3—Ba1—O2W | 79.04 (5) | C1—C2—H2B | 110.0 |
O3i—Ba1—O2W | 137.30 (5) | H2A—C2—H2B | 108.4 |
O4—Ba1—O2W | 121.05 (6) | O3—C4—C3 | 109.2 (2) |
O2i—Ba1—O2W | 120.55 (5) | O3—C4—H4A | 109.8 |
O2—Ba1—O2W | 66.62 (5) | C3—C4—H4A | 109.8 |
O1—Ba1—O2Wi | 79.48 (5) | O3—C4—H4B | 109.8 |
O1W—Ba1—O2Wi | 139.52 (5) | C3—C4—H4B | 109.8 |
O3—Ba1—O2Wi | 137.30 (5) | H4A—C4—H4B | 108.3 |
O3i—Ba1—O2Wi | 79.04 (5) | O4—C6—C5 | 108.7 (2) |
O4—Ba1—O2Wi | 121.05 (6) | O4—C6—H6A | 109.9 |
O2i—Ba1—O2Wi | 66.62 (5) | C5—C6—H6A | 109.9 |
O2—Ba1—O2Wi | 120.55 (5) | O4—C6—H6B | 109.9 |
O2W—Ba1—O2Wi | 65.46 (8) | C5—C6—H6B | 109.9 |
O1—Ba1—Cl2 | 131.15 (5) | H6A—C6—H6B | 108.3 |
O1W—Ba1—Cl2 | 151.60 (6) | Ba1—O1W—H1WA | 108.7 |
O3—Ba1—Cl2 | 82.30 (4) | Ba1—O1W—H1WB | 134.1 |
O3i—Ba1—Cl2 | 82.30 (4) | H1WA—O1W—H1WB | 117.1 |
O4—Ba1—Cl2 | 74.13 (6) | C6—O4—C6i | 113.1 (3) |
O2i—Ba1—Cl2 | 118.48 (4) | C6—O4—Ba1 | 112.90 (16) |
O2—Ba1—Cl2 | 118.48 (4) | C6i—O4—Ba1 | 112.90 (16) |
O2W—Ba1—Cl2 | 60.12 (4) | C1i—O1—C1 | 111.9 (3) |
O2Wi—Ba1—Cl2 | 60.12 (4) | C1i—O1—Ba1 | 120.76 (14) |
C2—O2—C3 | 111.8 (2) | C1—O1—Ba1 | 120.76 (14) |
C2—O2—Ba1 | 111.42 (15) | Ba1—O2W—H2WA | 111.2 |
C3—O2—Ba1 | 112.00 (14) | Ba1—O2W—H2WB | 91.0 |
C5—O3—C4 | 111.9 (2) | H2WA—O2W—H2WB | 110.1 |
C5—O3—Ba1 | 118.02 (17) | ||
O1—Ba1—O2—C2 | 28.83 (15) | Ba1—O3—C4—C3 | 36.3 (3) |
O1W—Ba1—O2—C2 | 113.93 (16) | O2—C3—C4—O3 | −63.0 (3) |
O3—Ba1—O2—C2 | −153.90 (17) | O3—C5—C6—O4 | 63.5 (3) |
O3i—Ba1—O2—C2 | 117.76 (18) | C5—C6—O4—C6i | 173.19 (18) |
O4—Ba1—O2—C2 | −178.09 (15) | C5—C6—O4—Ba1 | −57.1 (3) |
O2i—Ba1—O2—C2 | 51.76 (17) | O1—Ba1—O4—C6 | 115.07 (19) |
O2W—Ba1—O2—C2 | −62.78 (15) | O1W—Ba1—O4—C6 | 115.07 (19) |
O2Wi—Ba1—O2—C2 | −24.09 (16) | O3—Ba1—O4—C6 | 25.60 (18) |
Cl2—Ba1—O2—C2 | −94.34 (15) | O3i—Ba1—O4—C6 | −155.5 (2) |
O1—Ba1—O2—C3 | 154.96 (19) | O2i—Ba1—O4—C6 | −179.65 (18) |
O1W—Ba1—O2—C3 | −119.95 (18) | O2—Ba1—O4—C6 | 49.8 (2) |
O3—Ba1—O2—C3 | −27.77 (16) | O2W—Ba1—O4—C6 | −25.8 (2) |
O3i—Ba1—O2—C3 | −116.12 (19) | O2Wi—Ba1—O4—C6 | −104.06 (19) |
O4—Ba1—O2—C3 | −51.96 (18) | Cl2—Ba1—O4—C6 | −64.93 (19) |
O2i—Ba1—O2—C3 | 177.88 (14) | O1—Ba1—O4—C6i | −115.07 (19) |
O2W—Ba1—O2—C3 | 63.35 (17) | O1W—Ba1—O4—C6i | −115.07 (19) |
O2Wi—Ba1—O2—C3 | 102.04 (17) | O3—Ba1—O4—C6i | 155.5 (2) |
Cl2—Ba1—O2—C3 | 31.79 (18) | O3i—Ba1—O4—C6i | −25.60 (18) |
O1—Ba1—O3—C5 | −143.25 (18) | O2i—Ba1—O4—C6i | −49.8 (2) |
O1W—Ba1—O3—C5 | −71.58 (18) | O2—Ba1—O4—C6i | 179.65 (18) |
O3i—Ba1—O3—C5 | 6.9 (2) | O2W—Ba1—O4—C6i | 104.06 (19) |
O4—Ba1—O3—C5 | 7.92 (18) | O2Wi—Ba1—O4—C6i | 25.8 (2) |
O2i—Ba1—O3—C5 | −67.9 (2) | Cl2—Ba1—O4—C6i | 64.93 (19) |
O2—Ba1—O3—C5 | −145.89 (19) | C2—C1—O1—C1i | 175.28 (16) |
O2W—Ba1—O3—C5 | 144.92 (18) | C2—C1—O1—Ba1 | −33.0 (3) |
O2Wi—Ba1—O3—C5 | 111.38 (18) | O1W—Ba1—O1—C1i | 74.58 (19) |
Cl2—Ba1—O3—C5 | 83.99 (18) | O3—Ba1—O1—C1i | 149.64 (18) |
O1—Ba1—O3—C4 | −2.7 (2) | O3i—Ba1—O1—C1i | −0.5 (2) |
O1W—Ba1—O3—C4 | 68.92 (19) | O4—Ba1—O1—C1i | 74.58 (19) |
O3i—Ba1—O3—C4 | 147.40 (16) | O2i—Ba1—O1—C1i | −3.11 (18) |
O4—Ba1—O3—C4 | 148.4 (2) | O2—Ba1—O1—C1i | 152.3 (2) |
O2i—Ba1—O3—C4 | 72.6 (2) | O2W—Ba1—O1—C1i | −138.8 (2) |
O2—Ba1—O3—C4 | −5.39 (17) | O2Wi—Ba1—O1—C1i | −72.05 (19) |
O2W—Ba1—O3—C4 | −74.58 (18) | Cl2—Ba1—O1—C1i | −105.42 (19) |
O2Wi—Ba1—O3—C4 | −108.12 (18) | O1W—Ba1—O1—C1 | −74.58 (19) |
Cl2—Ba1—O3—C4 | −135.51 (18) | O3—Ba1—O1—C1 | 0.5 (2) |
C4—O3—C5—C6 | 178.0 (2) | O3i—Ba1—O1—C1 | −149.64 (18) |
Ba1—O3—C5—C6 | −39.0 (3) | O4—Ba1—O1—C1 | −74.58 (19) |
C2—O2—C3—C4 | −175.3 (2) | O2i—Ba1—O1—C1 | −152.3 (2) |
Ba1—O2—C3—C4 | 58.8 (2) | O2—Ba1—O1—C1 | 3.11 (18) |
C3—O2—C2—C1 | 175.6 (2) | O2W—Ba1—O1—C1 | 72.05 (19) |
Ba1—O2—C2—C1 | −58.2 (2) | O2Wi—Ba1—O1—C1 | 138.8 (2) |
O1—C1—C2—O2 | 60.2 (3) | Cl2—Ba1—O1—C1 | 105.42 (19) |
C5—O3—C4—C3 | 179.0 (2) |
Symmetry code: (i) x, −y+1/2, z. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1WA···Cl1ii | 0.82 | 2.66 | 3.450 (3) | 161 |
O1W—H1WB···Cl2iii | 0.82 | 2.41 | 3.216 (3) | 168 |
O2W—H2WA···Cl1 | 0.82 | 2.38 | 3.180 (2) | 165 |
O2W—H2WB···Cl2 | 0.82 | 2.44 | 3.144 (2) | 145 |
Symmetry codes: (ii) x+1/2, y, −z+3/2; (iii) x+1/2, y, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | [BaCl(C12H24O6)(H2O)3]Cl |
Mr | 526.59 |
Crystal system, space group | Orthorhombic, Pnma |
Temperature (K) | 293 |
a, b, c (Å) | 14.962 (3), 13.416 (3), 10.347 (2) |
V (Å3) | 2077.0 (7) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 2.21 |
Crystal size (mm) | 0.30 × 0.25 × 0.15 |
Data collection | |
Diffractometer | Rigaku Mercury2 CCD diffractometer |
Absorption correction | Multi-scan (CrystalClear; Rigaku, 2005) |
Tmin, Tmax | 0.90, 1.00 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 20436, 2478, 2284 |
Rint | 0.038 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.026, 0.047, 1.20 |
No. of reflections | 2478 |
No. of parameters | 118 |
No. of restraints | 4 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.49, −0.80 |
Computer programs: CrystalClear (Rigaku, 2005), XP in SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999).
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1WA···Cl1i | 0.82 | 2.66 | 3.450 (3) | 161 |
O1W—H1WB···Cl2ii | 0.82 | 2.41 | 3.216 (3) | 168 |
O2W—H2WA···Cl1 | 0.82 | 2.38 | 3.180 (2) | 165 |
O2W—H2WB···Cl2 | 0.82 | 2.44 | 3.144 (2) | 145 |
Symmetry codes: (i) x+1/2, y, −z+3/2; (ii) x+1/2, y, −z+1/2. |
Acknowledgements
This work was supported by the Start-Up Grant of Southeast University, China.
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Coordination compounds have attracted more attention as phase transition dielectric materials for their applications in memory storage (Fu et al., 2007, 2008, 2009; Fu & Xiong 2008). With the purpose of obtaining phase transition crystals, various complexes have been studied and a series of new materials with organic and inorganic molecules have been elaborated (Fu et al., 2011a,b; Fu, Zhang, Cai, Ge et al., 2011). In this study, we describe the crystal structure of the title compound.
The title compound was composed of one macrocyclic 18-crown-6 ether, one BaII cation, three water molecules, one coordinated Cl- anion and one uncoordinated Cl- anion (Fig. 1). Six non-H atoms (Ba1, O1W, O1, O4, Cl1 and Cl2) and two H atoms (H1WA, H1WB) are located on a mirror plane. The ten-coordinated BaII environment is defined by one terminal Cl atom, three water molecules and six O atoms from the macrocyclic ether. The macrocycle adopts a conformation with an approximate D3d symmetry, with all O—C—C—O torsion angles being gauche and alternating in sign and all C—O—C—C torsion angles being trans. The structure is stabilized by intermolecular O—H···Cl hydrogen bonds (Table 1). These hydrogen bonds link the ionic units into a two-dimensional network parallel to (0 1 0) (Fig. 2). O2W is involved in an intramolecular O2W—H2WB···Cl2 hydrogen bond.