Acta Cryst. (2009). E65, m436-m437 [ doi:10.1107/S1600536809010150 ]
-aqua-aqua[
4-ethyl (dichloromethylene)diphosphonato]sesquicalcium(II)] acetone hemisolvate 4.5-hydrate]The title compound, {[Ca1.5(C3H5Cl2O6P2)(H2O)2]·0.5CH3COCH3·4.5H2O}n, has a two-dimensional polymeric structure. The asymmetric unit contains two crystallographically independent Ca2+ cations connected by a chelating and bridging ethyl (dichloromethylene)diphosphonate(3-) ligand and an aqua ligand. One of the Ca atoms, lying on a centre of symmetry, has a slightly distorted octahedral geometry, while the other Ca atom is seven-coordinated in a distorted monocapped trigonal-prismatic geometry. The polymeric layers are further connected by extensive O-H
O hydrogen bonding into a three-dimensional supramolecular network. The acetone solvent molecule and one uncoordinated water molecule are located on twofold rotation axes.
Na3Cl2CP2O6Et (10.0 mg, 0.030 mmol) and CaCl2.2H2O (4.3 mg, 0.030 mmol) were dissolved separately in water (2.25 ml), the solutions were mixed, and tetramethoxysilane (TMOS 0.5 ml) was added. The two-phase system was shaken until homogeneous. After gel formation, a precipitant, acetone (1.0 ml), was added above the gel to induce crystallization. After about three months, colourless crystals suitable for X-ray analysis were formed uniformly throughout the gel as thin needles. The elemental analyses were performed several times and the results were consistent indicating that the acetone molecule and 3.5 water molecules were evaporated when the crystals were dried in air.
H atoms of the ethyl group and acetone molecule were placed at calculated positions in the riding-model approximation with C–H distances of 0.99 Å (methylene) and 0.98 Å (methyl), and with Uiso(H) = 1.5Ueq(C) or 1.2Ueq(C). H atoms of the aqua ligands and lattice water molecules were located in a difference map and treated as riding, with O–H bond lengths constrained to 0.84–0.99 Å and with Uiso(H) = 1.5Ueq(O) or 1.2Ueq(O).
Data collection: COLLECT (Nonius, 1997); cell refinement: DENZO/SCALEPACK (Otwinowski & Minor, 1997); data reduction: DENZO/SCALEPACK (Otwinowski & Minor, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg, 2005); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).
| [Ca1.5(C3H5Cl2O6P2)(H2O)2]·0.5C3H6O·4.5H2O | F(000) = 1968 |
| Mr = 476.17 | Dx = 1.758 Mg m−3 |
| Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
| Hall symbol: -C 2yc | Cell parameters from 31118 reflections |
| a = 31.2205 (3) Å | θ = 2.7–28.0° |
| b = 10.1546 (1) Å | µ = 1.02 mm−1 |
| c = 11.6510 (1) Å | T = 150 K |
| β = 103.107 (1)° | Needle, colourless |
| V = 3597.51 (6) Å3 | 0.25 × 0.15 × 0.10 mm |
| Z = 8 |
| Nonius KappaCCD diffractometer | 4209 independent reflections |
| Radiation source: fine-focus sealed tube | 3617 reflections with I > 2σ(I) |
| graphite | Rint = 0.055 |
| φ scans, and ω scans with κ offsets | θmax = 28.0°, θmin = 2.7° |
| Absorption correction: multi-scan (XPREP in SHELXTL; Sheldrick, 2008) | h = −40→40 |
| Tmin = 0.823, Tmax = 0.905 | k = −13→13 |
| 31118 measured reflections | l = −14→15 |
| 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)] = 0.030 | Hydrogen site location: inferred from neighbouring sites |
| wR(F2) = 0.073 | H-atom parameters constrained |
| S = 1.10 | w = 1/[σ2(Fo2) + (0.02P)2 + 12P] where P = (Fo2 + 2Fc2)/3 |
| 4209 reflections | (Δ/σ)max = 0.001 |
| 213 parameters | Δρmax = 0.47 e Å−3 |
| 0 restraints | Δρmin = −0.58 e Å−3 |
| [Ca1.5(C3H5Cl2O6P2)(H2O)2]·0.5C3H6O·4.5H2O | V = 3597.51 (6) Å3 |
| Mr = 476.17 | Z = 8 |
| Monoclinic, C2/c | Mo Kα radiation |
| a = 31.2205 (3) Å | µ = 1.02 mm−1 |
| b = 10.1546 (1) Å | T = 150 K |
| c = 11.6510 (1) Å | 0.25 × 0.15 × 0.10 mm |
| β = 103.107 (1)° |
| Nonius KappaCCD diffractometer | 4209 independent reflections |
| Absorption correction: multi-scan (XPREP in SHELXTL; Sheldrick, 2008) | 3617 reflections with I > 2σ(I) |
| Tmin = 0.823, Tmax = 0.905 | Rint = 0.055 |
| 31118 measured reflections | θmax = 28.0° |
| R[F2 > 2σ(F2)] = 0.030 | w = 1/[σ2(Fo2) + (0.02P)2 + 12P] where P = (Fo2 + 2Fc2)/3 |
| wR(F2) = 0.073 | Δρmax = 0.47 e Å−3 |
| S = 1.10 | Δρmin = −0.58 e Å−3 |
| 4209 reflections | Absolute structure: ? |
| 213 parameters | Flack parameter: ? |
| 0 restraints | Rogers parameter: ? |
| H-atom parameters constrained |
Experimental. These results are supported by the IR spectrum and TG analysis. Anal. Found: C, 9.30; H, 3.06%. Calc. for C3H11Cl2Ca1.5O9P2: C, 9.38; H, 2.89%. Main IR absorptions (KBr pellet, cm-1): 3385 (b,s), 2995 (w), 1648 (b,m), 1389 (m), 1213 (s), 1148 (s), 1105 (versus), 1082 (versus), 1048 (m), 1008 (m), 959 (m), 871 (m), 852 (w), 760 (m). 31P CP/MAS NMR: δP 7.4 and 5.1 p.p.m.. TGA (25–700 °C under a synthetic air): 25–180 °C 13.1% (calculated 14.1% for the loss of three water molecules). The observed total weight loss is 40.0% (calculated 41.1% if the final product is assumed to be a mixture of Ca(PO3)2 and CaO in a molar ratio of 2:1). |
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 | ||
| Ca1 | 0.2500 | 0.2500 | 0.0000 | 0.00999 (12) | |
| Ca2 | 0.248223 (14) | 0.12782 (4) | 0.36375 (3) | 0.00930 (9) | |
| Cl1 | 0.129792 (17) | −0.08747 (5) | 0.13650 (4) | 0.01375 (11) | |
| Cl2 | 0.137474 (18) | 0.01918 (5) | −0.08762 (4) | 0.01548 (11) | |
| P1 | 0.218448 (17) | −0.04904 (5) | 0.08794 (4) | 0.00900 (11) | |
| P2 | 0.160183 (17) | 0.18410 (5) | 0.12307 (5) | 0.00960 (11) | |
| O1 | 0.28281 (5) | 0.23098 (14) | 0.20444 (12) | 0.0126 (3) | |
| H1A | 0.2911 | 0.3217 | 0.2318 | 0.015* | |
| H1B | 0.3108 | 0.1830 | 0.2091 | 0.015* | |
| O2 | 0.32098 (5) | 0.03608 (14) | 0.41612 (13) | 0.0129 (3) | |
| H2A | 0.3353 | 0.0476 | 0.3639 | 0.019* | |
| H2B | 0.3198 | −0.0467 | 0.4244 | 0.019* | |
| O3 | 0.36311 (5) | 0.09774 (16) | 0.24321 (14) | 0.0178 (3) | |
| H3A | 0.3899 | 0.1215 | 0.2683 | 0.027* | |
| H3B | 0.3643 | 0.0198 | 0.2163 | 0.027* | |
| O4 | 0.13454 (5) | 0.36331 (16) | 0.37057 (14) | 0.0180 (3) | |
| H4A | 0.1472 | 0.3000 | 0.3430 | 0.027* | |
| H4B | 0.1530 | 0.3864 | 0.4332 | 0.027* | |
| O5 | 0.05044 (6) | 0.30916 (18) | 0.41409 (16) | 0.0269 (4) | |
| H5A | 0.0775 | 0.3154 | 0.4142 | 0.040* | |
| H5B | 0.0476 | 0.3118 | 0.4851 | 0.040* | |
| O6 | 0.05040 (6) | 0.32700 (17) | 0.66254 (16) | 0.0238 (4) | |
| H6A | 0.0405 | 0.2579 | 0.6883 | 0.036* | |
| H6B | 0.0285 | 0.3765 | 0.6374 | 0.036* | |
| O7 | 0.0000 | 0.4816 (2) | 0.2500 | 0.0224 (5) | |
| H7 | 0.0189 | 0.4385 | 0.2985 | 0.034* | |
| O8 | 0.0000 | 0.1357 (2) | 0.7500 | 0.0265 (6) | |
| O11 | 0.24121 (5) | 0.03290 (14) | 0.00999 (12) | 0.0107 (3) | |
| O12 | 0.23607 (5) | −0.03674 (14) | 0.21857 (12) | 0.0108 (3) | |
| O13 | 0.21597 (5) | −0.18636 (14) | 0.04307 (12) | 0.0103 (3) | |
| O21 | 0.18181 (5) | 0.26929 (14) | 0.04781 (13) | 0.0116 (3) | |
| O22 | 0.17957 (5) | 0.18469 (14) | 0.25168 (12) | 0.0115 (3) | |
| O23 | 0.10987 (5) | 0.21652 (15) | 0.10779 (13) | 0.0132 (3) | |
| C1 | 0.16168 (7) | 0.0176 (2) | 0.06555 (17) | 0.0104 (4) | |
| C21 | 0.08235 (8) | 0.2669 (2) | 0.0003 (2) | 0.0196 (5) | |
| H21A | 0.0615 | 0.1982 | −0.0384 | 0.024* | |
| H21B | 0.1006 | 0.2944 | −0.0548 | 0.024* | |
| C22 | 0.05800 (9) | 0.3813 (3) | 0.0325 (3) | 0.0292 (6) | |
| H22A | 0.0416 | 0.3541 | 0.0911 | 0.044* | |
| H22B | 0.0374 | 0.4143 | −0.0380 | 0.044* | |
| H22C | 0.0788 | 0.4511 | 0.0656 | 0.044* | |
| C2 | 0.0000 | 0.0182 (3) | 0.7500 | 0.0228 (7) | |
| C3 | −0.02303 (10) | −0.0568 (3) | 0.8273 (3) | 0.0394 (7) | |
| H3C | −0.0317 | 0.0033 | 0.8837 | 0.059* | |
| H3D | −0.0033 | −0.1244 | 0.8701 | 0.059* | |
| H3E | −0.0493 | −0.0990 | 0.7791 | 0.059* |
| U11 | U22 | U33 | U12 | U13 | U23 | |
| Ca1 | 0.0143 (3) | 0.0066 (3) | 0.0097 (3) | −0.0003 (2) | 0.0041 (2) | 0.0006 (2) |
| Ca2 | 0.0130 (2) | 0.00660 (18) | 0.00840 (19) | −0.00024 (15) | 0.00261 (15) | 0.00003 (14) |
| Cl1 | 0.0156 (2) | 0.0112 (2) | 0.0157 (3) | −0.00233 (19) | 0.00603 (19) | 0.00042 (18) |
| Cl2 | 0.0205 (3) | 0.0151 (2) | 0.0094 (2) | 0.0024 (2) | 0.00041 (19) | −0.00142 (18) |
| P1 | 0.0129 (3) | 0.0059 (2) | 0.0088 (3) | 0.00034 (19) | 0.00368 (19) | 0.00012 (18) |
| P2 | 0.0122 (3) | 0.0072 (2) | 0.0097 (3) | 0.00102 (19) | 0.0030 (2) | 0.00008 (18) |
| O1 | 0.0177 (8) | 0.0088 (7) | 0.0112 (7) | −0.0003 (6) | 0.0030 (6) | −0.0011 (5) |
| O2 | 0.0160 (7) | 0.0083 (7) | 0.0154 (8) | −0.0001 (6) | 0.0054 (6) | 0.0010 (6) |
| O3 | 0.0171 (8) | 0.0164 (8) | 0.0199 (8) | 0.0005 (6) | 0.0045 (6) | 0.0000 (6) |
| O4 | 0.0205 (8) | 0.0176 (8) | 0.0152 (8) | 0.0029 (6) | 0.0027 (6) | −0.0036 (6) |
| O5 | 0.0227 (9) | 0.0291 (10) | 0.0296 (10) | −0.0008 (8) | 0.0074 (7) | −0.0014 (8) |
| O6 | 0.0200 (9) | 0.0214 (9) | 0.0297 (10) | −0.0012 (7) | 0.0053 (7) | 0.0032 (7) |
| O7 | 0.0205 (12) | 0.0243 (13) | 0.0216 (12) | 0.000 | 0.0032 (10) | 0.000 |
| O8 | 0.0306 (14) | 0.0174 (12) | 0.0344 (15) | 0.000 | 0.0130 (11) | 0.000 |
| O11 | 0.0159 (7) | 0.0068 (7) | 0.0109 (7) | 0.0000 (6) | 0.0057 (6) | 0.0007 (5) |
| O12 | 0.0146 (7) | 0.0086 (7) | 0.0092 (7) | 0.0005 (6) | 0.0027 (6) | −0.0010 (5) |
| O13 | 0.0137 (7) | 0.0072 (7) | 0.0103 (7) | 0.0009 (5) | 0.0030 (6) | −0.0011 (5) |
| O21 | 0.0155 (7) | 0.0068 (7) | 0.0135 (7) | 0.0009 (6) | 0.0052 (6) | 0.0003 (5) |
| O22 | 0.0146 (7) | 0.0095 (7) | 0.0102 (7) | 0.0017 (6) | 0.0025 (6) | −0.0010 (5) |
| O23 | 0.0130 (7) | 0.0128 (7) | 0.0138 (7) | 0.0040 (6) | 0.0031 (6) | 0.0019 (6) |
| C1 | 0.0134 (10) | 0.0085 (9) | 0.0095 (10) | −0.0008 (8) | 0.0031 (8) | 0.0006 (7) |
| C21 | 0.0190 (11) | 0.0221 (12) | 0.0155 (11) | 0.0052 (9) | −0.0009 (9) | 0.0015 (9) |
| C22 | 0.0262 (13) | 0.0223 (13) | 0.0356 (15) | 0.0100 (11) | −0.0002 (11) | 0.0030 (11) |
| C2 | 0.0166 (16) | 0.0189 (17) | 0.033 (2) | 0.000 | 0.0050 (14) | 0.000 |
| C3 | 0.0362 (16) | 0.0276 (15) | 0.061 (2) | 0.0062 (13) | 0.0253 (15) | 0.0149 (14) |
| Ca1—O1i | 2.3778 (14) | P2—O22 | 1.4834 (15) |
| Ca1—O1 | 2.3778 (14) | P2—O21 | 1.4972 (15) |
| Ca1—O11 | 2.2278 (14) | P2—O23 | 1.5750 (15) |
| Ca1—O11i | 2.2278 (14) | P2—C1 | 1.823 (2) |
| Ca1—O21i | 2.3279 (15) | O1—H1A | 0.9900 |
| Ca1—O21 | 2.3279 (15) | O1—H1B | 0.9900 |
| Ca1—P2i | 3.4915 (5) | O2—H2A | 0.8414 |
| Ca1—P2 | 3.4915 (5) | O2—H2B | 0.8477 |
| Ca1—P1i | 3.4204 (5) | O3—H3A | 0.8560 |
| Ca1—P1 | 3.4204 (5) | O3—H3B | 0.8554 |
| Ca1—Ca2ii | 4.1476 (4) | O4—H4A | 0.8541 |
| Ca1—Ca2iii | 4.1476 (4) | O4—H4B | 0.8536 |
| Ca2—O1 | 2.5726 (15) | O5—H5A | 0.8468 |
| Ca2—O2 | 2.4024 (15) | O5—H5B | 0.8525 |
| Ca2—O11iv | 2.4049 (15) | O6—H6A | 0.8481 |
| Ca2—O12 | 2.3466 (14) | O6—H6B | 0.8448 |
| Ca2—O13iii | 2.3320 (15) | O7—H7 | 0.8416 |
| Ca2—O13iv | 2.5858 (15) | O8—C2 | 1.193 (4) |
| Ca2—O22 | 2.3158 (15) | O11—Ca2ii | 2.4049 (15) |
| Ca2—P1iv | 3.0705 (6) | O13—Ca2vi | 2.3320 (15) |
| Ca2—P1iii | 3.4498 (6) | O13—Ca2ii | 2.5858 (15) |
| Ca2—P2 | 3.4999 (7) | O23—C21 | 1.442 (3) |
| Ca2—Ca2v | 4.0111 (8) | C21—C22 | 1.482 (3) |
| Ca2—Ca1vi | 4.1476 (4) | C21—H21A | 0.9900 |
| Ca2—H2A | 2.8382 | C21—H21B | 0.9900 |
| Ca2—H2B | 2.8142 | C22—H22A | 0.9800 |
| Cl1—C1 | 1.785 (2) | C22—H22B | 0.9800 |
| Cl2—C1 | 1.773 (2) | C22—H22C | 0.9800 |
| P1—O13 | 1.4851 (15) | C2—C3vii | 1.484 (3) |
| P1—O12 | 1.5016 (15) | C2—C3 | 1.484 (3) |
| P1—O11 | 1.5216 (15) | C3—H3C | 0.9800 |
| P1—C1 | 1.860 (2) | C3—H3D | 0.9800 |
| P1—Ca2ii | 3.0705 (6) | C3—H3E | 0.9800 |
| P1—Ca2vi | 3.4498 (6) | ||
| O21i—Ca1—O21 | 180.00 (6) | P2—Ca2—Ca2v | 114.135 (18) |
| O21i—Ca1—O11 | 93.40 (5) | O22—Ca2—Ca1vi | 112.14 (4) |
| O21—Ca1—O11 | 86.60 (5) | O13iii—Ca2—Ca1vi | 127.37 (4) |
| O21i—Ca1—O11i | 86.60 (5) | O2—Ca2—Ca1vi | 67.31 (4) |
| O21—Ca1—O11i | 93.40 (5) | O12—Ca2—Ca1vi | 66.62 (4) |
| O11—Ca1—O11i | 180.00 (8) | O11iv—Ca2—Ca1vi | 25.39 (3) |
| O21i—Ca1—O1i | 88.67 (5) | O1—Ca2—Ca1vi | 132.96 (4) |
| O21—Ca1—O1i | 91.33 (5) | O13iv—Ca2—Ca1vi | 82.95 (3) |
| O11—Ca1—O1i | 95.88 (5) | P1iv—Ca2—Ca1vi | 54.110 (11) |
| O11i—Ca1—O1i | 84.12 (5) | P1iii—Ca2—Ca1vi | 147.146 (14) |
| O21i—Ca1—O1 | 91.33 (5) | P2—Ca2—Ca1vi | 113.429 (13) |
| O21—Ca1—O1 | 88.67 (5) | Ca2v—Ca2—Ca1vi | 105.887 (14) |
| O11—Ca1—O1 | 84.12 (5) | O22—Ca2—H2A | 146.7 |
| O11i—Ca1—O1 | 95.88 (5) | O13iii—Ca2—H2A | 82.8 |
| O1i—Ca1—O1 | 180.00 (11) | O2—Ca2—H2A | 15.8 |
| O21i—Ca1—P2i | 19.02 (4) | O12—Ca2—H2A | 78.1 |
| O21—Ca1—P2i | 160.98 (4) | O11iv—Ca2—H2A | 92.6 |
| O11—Ca1—P2i | 109.33 (4) | O1—Ca2—H2A | 63.8 |
| O11i—Ca1—P2i | 70.67 (4) | O13iv—Ca2—H2A | 127.9 |
| O1i—Ca1—P2i | 77.10 (4) | P1iv—Ca2—H2A | 113.6 |
| O1—Ca1—P2i | 102.90 (4) | P1iii—Ca2—H2A | 91.1 |
| O21i—Ca1—P2 | 160.98 (4) | P2—Ca2—H2A | 128.7 |
| O21—Ca1—P2 | 19.02 (4) | Ca2v—Ca2—H2A | 108.8 |
| O11—Ca1—P2 | 70.67 (4) | Ca1vi—Ca2—H2A | 78.7 |
| O11i—Ca1—P2 | 109.33 (4) | O22—Ca2—H2B | 151.6 |
| O1i—Ca1—P2 | 102.90 (4) | O13iii—Ca2—H2B | 97.1 |
| O1—Ca1—P2 | 77.10 (4) | O2—Ca2—H2B | 16.4 |
| P2i—Ca1—P2 | 180.000 (18) | O12—Ca2—H2B | 73.8 |
| O21i—Ca1—P1i | 70.24 (4) | O11iv—Ca2—H2B | 65.8 |
| O21—Ca1—P1i | 109.76 (4) | O1—Ca2—H2B | 89.9 |
| O11—Ca1—P1i | 160.29 (4) | O13iv—Ca2—H2B | 112.0 |
| O11i—Ca1—P1i | 19.71 (4) | P1iv—Ca2—H2B | 89.9 |
| O1i—Ca1—P1i | 73.49 (4) | P1iii—Ca2—H2B | 111.4 |
| O1—Ca1—P1i | 106.51 (4) | P2—Ca2—H2B | 137.6 |
| P2i—Ca1—P1i | 52.709 (12) | Ca2v—Ca2—H2B | 108.2 |
| P2—Ca1—P1i | 127.291 (12) | Ca1vi—Ca2—H2B | 51.7 |
| O21i—Ca1—P1 | 109.76 (4) | H2A—Ca2—H2B | 27.5 |
| O21—Ca1—P1 | 70.24 (4) | O13—P1—O12 | 114.38 (8) |
| O11—Ca1—P1 | 19.71 (4) | O13—P1—O11 | 107.30 (8) |
| O11i—Ca1—P1 | 160.29 (4) | O12—P1—O11 | 116.49 (8) |
| O1i—Ca1—P1 | 106.51 (4) | O13—P1—C1 | 108.70 (9) |
| O1—Ca1—P1 | 73.49 (4) | O12—P1—C1 | 103.32 (9) |
| P2i—Ca1—P1 | 127.291 (12) | O11—P1—C1 | 106.05 (9) |
| P2—Ca1—P1 | 52.709 (12) | O13—P1—Ca2ii | 57.15 (6) |
| P1i—Ca1—P1 | 180.000 (17) | O12—P1—Ca2ii | 140.52 (6) |
| O21i—Ca1—Ca2ii | 76.36 (4) | O11—P1—Ca2ii | 50.37 (6) |
| O21—Ca1—Ca2ii | 103.64 (4) | C1—P1—Ca2ii | 116.00 (7) |
| O11—Ca1—Ca2ii | 27.57 (4) | O12—P1—Ca2vi | 83.46 (6) |
| O11i—Ca1—Ca2ii | 152.43 (4) | O11—P1—Ca2vi | 116.94 (6) |
| O1i—Ca1—Ca2ii | 74.12 (4) | C1—P1—Ca2vi | 127.72 (7) |
| O1—Ca1—Ca2ii | 105.88 (4) | Ca2ii—P1—Ca2vi | 75.679 (16) |
| P2i—Ca1—Ca2ii | 87.845 (10) | O13—P1—Ca1 | 136.36 (6) |
| P2—Ca1—Ca2ii | 92.155 (10) | O12—P1—Ca1 | 99.53 (6) |
| P1i—Ca1—Ca2ii | 133.342 (10) | C1—P1—Ca1 | 87.98 (6) |
| P1—Ca1—Ca2ii | 46.658 (10) | Ca2ii—P1—Ca1 | 79.232 (14) |
| O21i—Ca1—Ca2iii | 103.64 (4) | Ca2vi—P1—Ca1 | 142.808 (18) |
| O21—Ca1—Ca2iii | 76.36 (4) | O22—P2—O21 | 117.03 (9) |
| O11—Ca1—Ca2iii | 152.43 (4) | O22—P2—O23 | 106.35 (8) |
| O11i—Ca1—Ca2iii | 27.57 (4) | O21—P2—O23 | 112.56 (8) |
| O1i—Ca1—Ca2iii | 105.88 (4) | O22—P2—C1 | 109.66 (9) |
| O1—Ca1—Ca2iii | 74.12 (4) | O21—P2—C1 | 105.54 (9) |
| P2i—Ca1—Ca2iii | 92.155 (10) | O23—P2—C1 | 105.09 (9) |
| P2—Ca1—Ca2iii | 87.845 (10) | O22—P2—Ca1 | 103.43 (6) |
| P1i—Ca1—Ca2iii | 46.658 (10) | O23—P2—Ca1 | 141.89 (6) |
| P1—Ca1—Ca2iii | 133.342 (10) | C1—P2—Ca1 | 86.38 (7) |
| Ca2ii—Ca1—Ca2iii | 180.000 (14) | O21—P2—Ca2 | 100.78 (6) |
| O22—Ca2—O13iii | 110.21 (5) | O23—P2—Ca2 | 134.96 (6) |
| O22—Ca2—O2 | 160.19 (5) | C1—P2—Ca2 | 93.57 (7) |
| O13iii—Ca2—O2 | 82.51 (5) | Ca1—P2—Ca2 | 78.603 (13) |
| O22—Ca2—O12 | 78.08 (5) | Ca1—O1—Ca2 | 126.86 (6) |
| O13iii—Ca2—O12 | 153.36 (5) | Ca1—O1—H1A | 105.6 |
| O2—Ca2—O12 | 84.02 (5) | Ca2—O1—H1A | 105.6 |
| O22—Ca2—O11iv | 110.33 (5) | Ca1—O1—H1B | 105.6 |
| O13iii—Ca2—O11iv | 109.29 (5) | Ca2—O1—H1B | 105.6 |
| O2—Ca2—O11iv | 77.85 (5) | H1A—O1—H1B | 106.1 |
| O12—Ca2—O11iv | 90.09 (5) | Ca2—O2—H2A | 112.9 |
| O22—Ca2—O1 | 88.74 (5) | Ca2—O2—H2B | 110.5 |
| O13iii—Ca2—O1 | 76.76 (5) | H2A—O2—H2B | 105.3 |
| O2—Ca2—O1 | 79.26 (5) | H3A—O3—H3B | 105.4 |
| O12—Ca2—O1 | 78.20 (5) | H4A—O4—H4B | 104.4 |
| O11iv—Ca2—O1 | 155.24 (5) | H5A—O5—H5B | 108.6 |
| O22—Ca2—O13iv | 85.30 (5) | H6A—O6—H6B | 106.6 |
| O13iii—Ca2—O13iv | 70.81 (6) | P1—O11—Ca1 | 130.70 (8) |
| O2—Ca2—O13iv | 113.76 (5) | P1—O11—Ca2ii | 100.46 (7) |
| O12—Ca2—O13iv | 135.83 (5) | Ca1—O11—Ca2ii | 127.05 (6) |
| O11iv—Ca2—O13iv | 57.92 (5) | P1—O12—Ca2 | 138.76 (9) |
| O1—Ca2—O13iv | 142.51 (5) | P1—O13—Ca2vi | 127.93 (8) |
| O22—Ca2—P1iv | 97.16 (4) | P1—O13—Ca2ii | 94.01 (7) |
| O13iii—Ca2—P1iv | 91.17 (4) | Ca2vi—O13—Ca2ii | 109.19 (6) |
| O2—Ca2—P1iv | 97.71 (4) | P2—O21—Ca1 | 130.53 (8) |
| O12—Ca2—P1iv | 113.39 (4) | P2—O22—Ca2 | 133.01 (9) |
| O11iv—Ca2—P1iv | 29.16 (3) | C21—O23—P2 | 123.71 (14) |
| O1—Ca2—P1iv | 167.82 (4) | Cl2—C1—Cl1 | 108.43 (11) |
| O13iv—Ca2—P1iv | 28.85 (3) | Cl2—C1—P1 | 108.63 (11) |
| O22—Ca2—P1iii | 93.51 (4) | Cl1—C1—P1 | 109.34 (11) |
| O13iii—Ca2—P1iii | 19.85 (4) | Cl2—C1—P2 | 108.74 (11) |
| O2—Ca2—P1iii | 95.43 (4) | Cl1—C1—P2 | 108.71 (11) |
| O12—Ca2—P1iii | 142.04 (4) | P1—C1—P2 | 112.90 (11) |
| O11iv—Ca2—P1iii | 127.05 (4) | O23—C21—C22 | 107.30 (19) |
| O1—Ca2—P1iii | 64.53 (3) | O23—C21—H21A | 110.3 |
| O13iv—Ca2—P1iii | 78.92 (3) | C22—C21—H21A | 110.3 |
| P1iv—Ca2—P1iii | 104.321 (16) | O23—C21—H21B | 110.3 |
| O22—Ca2—P2 | 18.06 (4) | C22—C21—H21B | 110.3 |
| O13iii—Ca2—P2 | 116.57 (4) | H21A—C21—H21B | 108.5 |
| O2—Ca2—P2 | 142.41 (4) | C21—C22—H22A | 109.5 |
| O12—Ca2—P2 | 64.50 (4) | C21—C22—H22B | 109.5 |
| O11iv—Ca2—P2 | 119.83 (4) | H22A—C22—H22B | 109.5 |
| O1—Ca2—P2 | 74.77 (4) | C21—C22—H22C | 109.5 |
| O13iv—Ca2—P2 | 103.35 (3) | H22A—C22—H22C | 109.5 |
| P1iv—Ca2—P2 | 112.947 (18) | H22B—C22—H22C | 109.5 |
| P1iii—Ca2—P2 | 97.378 (15) | O8—C2—C3vii | 120.89 (17) |
| O22—Ca2—Ca2v | 98.51 (4) | O8—C2—C3 | 120.89 (17) |
| O13iii—Ca2—Ca2v | 37.50 (4) | C3vii—C2—C3 | 118.2 (3) |
| O2—Ca2—Ca2v | 100.60 (4) | C2—C3—H3C | 109.5 |
| O12—Ca2—Ca2v | 169.12 (4) | C2—C3—H3D | 109.5 |
| O11iv—Ca2—Ca2v | 81.36 (4) | H3C—C3—H3D | 109.5 |
| O1—Ca2—Ca2v | 112.23 (4) | C2—C3—H3E | 109.5 |
| O13iv—Ca2—Ca2v | 33.30 (3) | H3C—C3—H3E | 109.5 |
| P1iv—Ca2—Ca2v | 56.443 (13) | H3D—C3—H3E | 109.5 |
| P1iii—Ca2—Ca2v | 47.877 (12) |
| Symmetry codes: (i) −x+1/2, −y+1/2, −z; (ii) x, −y, z−1/2; (iii) −x+1/2, y+1/2, −z+1/2; (iv) x, −y, z+1/2; (v) −x+1/2, −y+1/2, −z+1; (vi) −x+1/2, y−1/2, −z+1/2; (vii) −x, y, −z+3/2. |
| D—H···A | D—H | H···A | D···A | D—H···A |
| O1—H1B···O3 | 0.99 | 1.81 | 2.794 (2) | 171 |
| O1—H1A···O12iii | 0.99 | 1.83 | 2.637 (2) | 137 |
| O2—H2A···O3 | 0.84 | 1.88 | 2.717 (2) | 172 |
| O2—H2B···O21vi | 0.85 | 1.90 | 2.746 (2) | 177 |
| O3—H3A···O6v | 0.86 | 1.93 | 2.782 (2) | 175 |
| O3—H3B···O4vi | 0.86 | 1.89 | 2.734 (2) | 169 |
| O4—H4A···O22 | 0.85 | 2.00 | 2.841 (2) | 166 |
| O4—H4B···O2v | 0.85 | 1.93 | 2.754 (2) | 163 |
| O5—H5A···O4 | 0.85 | 2.02 | 2.838 (2) | 163 |
| O5—H5B···O6 | 0.85 | 2.05 | 2.901 (3) | 171 |
| O6—H6A···O8 | 0.85 | 2.02 | 2.831 (2) | 161 |
| O6—H6B···O7viii | 0.84 | 2.26 | 2.832 (2) | 125 |
| O7—H7···O5 | 0.84 | 1.98 | 2.799 (2) | 166 |
| Symmetry codes: (iii) −x+1/2, y+1/2, −z+1/2; (vi) −x+1/2, y−1/2, −z+1/2; (v) −x+1/2, −y+1/2, −z+1; (viii) −x, −y+1, −z+1. |
| Ca1—O1 | 2.3778 (14) | Ca2—O11i | 2.4049 (15) |
| Ca1—O11 | 2.2278 (14) | Ca2—O12 | 2.3466 (14) |
| Ca1—O21 | 2.3279 (15) | Ca2—O13ii | 2.3320 (15) |
| Ca2—O1 | 2.5726 (15) | Ca2—O13i | 2.5858 (15) |
| Ca2—O2 | 2.4024 (15) | Ca2—O22 | 2.3158 (15) |
| Symmetry codes: (i) x, −y, z+1/2; (ii) −x+1/2, y+1/2, −z+1/2. |
| D—H···A | D—H | H···A | D···A | D—H···A |
| O1—H1B···O3 | 0.99 | 1.81 | 2.794 (2) | 171 |
| O1—H1A···O12ii | 0.99 | 1.83 | 2.637 (2) | 137 |
| O2—H2A···O3 | 0.84 | 1.88 | 2.717 (2) | 172 |
| O2—H2B···O21iii | 0.85 | 1.90 | 2.746 (2) | 177 |
| O3—H3A···O6iv | 0.86 | 1.93 | 2.782 (2) | 175 |
| O3—H3B···O4iii | 0.86 | 1.89 | 2.734 (2) | 169 |
| O4—H4A···O22 | 0.85 | 2.00 | 2.841 (2) | 166 |
| O4—H4B···O2iv | 0.85 | 1.93 | 2.754 (2) | 163 |
| O5—H5A···O4 | 0.85 | 2.02 | 2.838 (2) | 163 |
| O5—H5B···O6 | 0.85 | 2.05 | 2.901 (3) | 171 |
| O6—H6A···O8 | 0.85 | 2.02 | 2.831 (2) | 161 |
| O6—H6B···O7v | 0.84 | 2.26 | 2.832 (2) | 125 |
| O7—H7···O5 | 0.84 | 1.98 | 2.799 (2) | 166 |
| Symmetry codes: (ii) −x+1/2, y+1/2, −z+1/2; (iii) −x+1/2, y−1/2, −z+1/2; (iv) −x+1/2, −y+1/2, −z+1; (v) −x, −y+1, −z+1. |
Brandenburg, K. (2005). DIAMOND. Crystal Impact GbR, Bonn, Germany.
Clearfield, A. (1998). Progress in Inorganic Chemistry: Metal Phosphonate Chemistry, Vol 47, edited by K. D. Karlin, pp. 371–510. New York: Wiley.
Clearfield, A., Krishnamohan Sharma, C. V. & Zhang, B. (2001). Chem. Mater. 13, 3099–3112.
Fu, R., Hu, S. & Wu, X. (2007). Cryst. Growth Des. 7, 1134–1144.
Jokiniemi, J., Peräniemi, S., Vepsäläinen, J. J. & Ahlgrén, M. (2008). CrystEngComm, 10, 1011–1017.
Jokiniemi, J., Vuokila-Laine, E., Peräniemi, S., Vepsäläinen, J. J. & Ahlgrén, M. (2007). CrystEngComm, 9, 158–164.
Lin, L., Zhang, T.-J., Fan, Y.-T., Ding, D.-G. & Hou, H.-W. (2007). J. Mol. Struct. 837, 107–117.
Mathew, M., Fowler, B. O., Breuer, E., Golomb, G., Alferiev, I. S. & Eidenman, N. (1998). Inorg. Chem. 37, 6485–6494.
Nonius (1997). COLLECT. Nonius BV, Delft, The Netherlands.
Otwinowski, Z. & Minor, W. (1997). Methods in Enzymology, Vol. 276, Macromolecular Crystallography, Part A, edited by C. W. Carter Jr & R. M. Sweet, pp. 307–326. New York: Academic Press.
Serre, C., Groves, J. A., Lightfoot, P., Slawin, A. M. Z., Wright, P. A., Stock, N., Bein, T., Haouas, M., Taulelle, F. & Férey, G. (2006). Chem. Mater. 18, 1451–1457.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122.
Metal bisphosphonates have been attracting closer attention in light of their important applications in industrial processes such as ion-exchange, catalysis and sorption (Clearfield et al., 2001, Clearfield, 1998, Fu et al., 2007). Metal bisphosphonates usually adopt layered or pillared layered structures (Fu et al., 2007, Mathew et al., 1998). Other structural types, such as 1-D and 3-D open networks, have also been prepared in order to study the properties of bisphosphonate solid materials (Lin et al., 2007, Fu et al., 2007). Most of the effective materials consist of open frameworks and microporous structures (Fu et al., 2007, Serre et al., 2006). In recent investigations, we studied the complexing properties of amide ester derivatives of (dichloromethylene)bisphosphonate, Cl2MBP (Jokiniemi et al., 2007, 2008). The introduction of various ester substituents into phosphonate groups can results in novel structures of metal bisphosphonates and lead to interesting functionalities. Of the numerous metal phosphonate compounds now known, only a small number have been prepared with alkali earth metals. We now present the crystal structure of the Ca(II) complex of the monoethyl ester derivative of Cl2MBP obtained by gel crystallization.
The title compound consists of two-dimensional layers parallel to the (100) plane. The Ca1 atom lies on the centre of symmetry with two symmetrically chelating (Cl2CP2O6Et)3- ligands and two aqua ligands in axial positions; the geometry is slightly distorted octahedron with Ca1–O bond lengths of 2.228 (1)–2.378 (1) Å (Table 1, Fig. 1). The three trans bond angles are 180.0°, while the cis bond angles range from 84.12 (5) to 95.88 (5)°. The aqua ligand O1 bridges Ca1 and the adjacent Ca2 atom with Ca···Ca distance of 4.4283 (4) Å. The Ca2 atom is seven-coordinated in distorted monocapped trigonal prismatic geometry and is coordinated by five phosphonate O atoms from three different (Cl2CP2O6Et)3- ligands. The coordination sphere is completed by two aqua ligands. The Ca2–O bond lengths are 2.316 (2)–2.586 (2) Å. The (Cl2CP2O6Et)3- ligand is coordinated to four Ca2+ cations through five O atoms forming two six-membered chelate rings with Ca1 and Ca2 atoms, and the P1 atom forms a four-membered chelate ring with the adjacent Ca2D atom (x, -y, z - 1/2). Thus, the two oxygen atoms (O11, O13) act as monoatomic bridges between two Ca atoms.
The layers are further connected by extensive hydrogen bonding (O···O 2.637 (2)–2.901 (3) Å, 125–177°) into a 3-D network with the interlayer distance of 15.2036 (2) Å (Fig. 2, Table 2). The O8 and C2 atoms of the acetone molecule, as well as the water molecule O7, are located on the individual two-fold rotation axis. The ethyl groups and chlorine atoms point out from the layers.