| Literature DB >> 26029417 |
Xiao-Ping Zhang1, Xin Chen1, Kun-Lin Huang1.
Abstract
In the crystal of the title polymeric complex, [Cd(C12H8O4)(H2O)2] n , the Cd(II) cation, located on a twofold rotation axis, is coordinated by two water mol-ecules and chelated by two phenyl-enediacrylate anions (mpda) in a distorted octa-hedral geometry. The mpda anions bridge the Cd(II) cations, forming helical chains propagating along the c-axis direction. The mpba anion has twofold symmetry with two benzene C atoms located on the twofold rotation axis. In the crystal, O-H⋯O hydrogen bonds link the polymeric helical chains into a three-dimensional supra-molecular architecture.Entities:
Keywords: V-shaped ligand; cadmium; chiral coordination polymer; crystal structure; helical chain
Year: 2015 PMID: 26029417 PMCID: PMC4438799 DOI: 10.1107/S2056989015005411
Source DB: PubMed Journal: Acta Crystallogr E Crystallogr Commun
| [Cd(C12H8O4)(H2O)2] | |
| Orthorhombic, | Mo |
| Hall symbol: C 2c 2 | Cell parameters from 1107 reflections |
| θ = 2.0–25.0° | |
| µ = 1.75 mm−1 | |
| Block, colorless | |
| 0.35 × 0.32 × 0.25 mm |
| Bruker SMART APEXII CCD diffractometer | 1107 independent reflections |
| Radiation source: fine-focus sealed tube | 950 reflections with |
| Graphite monochromator | |
| ω scans | θmax = 25.0°, θmin = 2.1° |
| Absorption correction: multi-scan ( | |
| 3205 measured reflections |
| Refinement on | Secondary atom site location: difference Fourier map |
| Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
| H atoms treated by a mixture of independent and constrained refinement | |
| (Δ/σ)max < 0.001 | |
| 1107 reflections | Δρmax = 0.93 e Å−3 |
| 96 parameters | Δρmin = −0.64 e Å−3 |
| 2 restraints | Absolute structure: Flack (1983), 1035 Friedel pairs |
| Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.07 (19) |
| 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 |
| Cd1 | −0.00336 (16) | 1.0000 | 1.0000 | 0.0311 (3) | |
| O1 | 0.2947 (11) | 0.9898 (5) | 0.9139 (3) | 0.0332 (13) | |
| O2 | 0.1598 (11) | 0.8310 (5) | 0.9546 (3) | 0.0335 (14) | |
| O3W | −0.2906 (13) | 0.8960 (5) | 1.0493 (4) | 0.0438 (18) | |
| C1 | 0.307 (2) | 0.8841 (8) | 0.9156 (4) | 0.040 (2) | |
| C2 | 0.4734 (19) | 0.8224 (7) | 0.8726 (5) | 0.039 (2) | |
| H2 | 0.4462 | 0.7460 | 0.8689 | 0.046* | |
| C3 | 0.6643 (18) | 0.8655 (8) | 0.8375 (4) | 0.0329 (19) | |
| H3 | 0.6894 | 0.9420 | 0.8411 | 0.040* | |
| C4 | 0.8387 (19) | 0.8040 (7) | 0.7936 (4) | 0.0297 (19) | |
| C5 | 0.848 (2) | 0.6888 (8) | 0.7930 (5) | 0.041 (2) | |
| H5 | 0.7472 | 0.6494 | 0.8231 | 0.049* | |
| C6 | 1.0000 | 0.6307 (10) | 0.7500 | 0.042 (3) | |
| H6 | 1.0000 | 0.5531 | 0.7500 | 0.050* | |
| C7 | 1.0000 | 0.8616 (10) | 0.7500 | 0.033 (3) | |
| H7 | 1.0000 | 0.9392 | 0.7500 | 0.039* | |
| H1A | −0.436 (7) | 0.917 (7) | 1.062 (4) | 0.02 (2)* | |
| H1B | −0.288 (15) | 0.826 (2) | 1.056 (4) | 0.01 (2)* |
| Cd1 | 0.0265 (5) | 0.0292 (5) | 0.0377 (5) | 0.000 | 0.000 | −0.0032 (3) |
| O1 | 0.029 (3) | 0.024 (3) | 0.046 (3) | −0.001 (3) | 0.007 (3) | −0.001 (3) |
| O2 | 0.012 (3) | 0.027 (3) | 0.062 (4) | −0.006 (3) | 0.013 (3) | −0.004 (3) |
| O3W | 0.024 (4) | 0.028 (3) | 0.079 (5) | −0.002 (3) | 0.015 (4) | 0.001 (4) |
| C1 | 0.053 (6) | 0.040 (5) | 0.027 (4) | −0.009 (5) | 0.000 (5) | −0.009 (4) |
| C2 | 0.031 (5) | 0.026 (4) | 0.059 (6) | −0.015 (5) | 0.006 (5) | −0.007 (4) |
| C3 | 0.024 (4) | 0.037 (5) | 0.038 (5) | −0.008 (4) | 0.005 (4) | −0.001 (4) |
| C4 | 0.030 (4) | 0.031 (5) | 0.028 (4) | −0.004 (5) | 0.004 (4) | 0.002 (3) |
| C5 | 0.046 (6) | 0.030 (5) | 0.046 (5) | −0.012 (5) | 0.008 (5) | 0.004 (4) |
| C6 | 0.048 (8) | 0.024 (6) | 0.054 (7) | 0.000 | 0.008 (8) | 0.000 |
| C7 | 0.041 (7) | 0.025 (6) | 0.032 (6) | 0.000 | 0.006 (7) | 0.000 |
| Cd1—O1i | 2.329 (6) | C2—C3 | 1.334 (13) |
| Cd1—O1 | 2.329 (6) | C2—H2 | 0.9300 |
| Cd1—O2i | 2.380 (6) | C3—C4 | 1.468 (12) |
| Cd1—O2 | 2.380 (6) | C3—H3 | 0.9300 |
| Cd1—O3W | 2.199 (7) | C4—C5 | 1.383 (14) |
| Cd1—O3Wi | 2.199 (7) | C4—C7 | 1.398 (10) |
| Cd1—C1i | 2.727 (10) | C5—C6 | 1.363 (12) |
| O1—C1 | 1.270 (12) | C5—H5 | 0.9300 |
| O2—C1 | 1.269 (12) | C6—C5ii | 1.363 (12) |
| O3W—H1A | 0.85 (2) | C6—H6 | 0.9300 |
| O3W—H1B | 0.84 (2) | C7—C4ii | 1.398 (10) |
| C1—C2 | 1.432 (14) | C7—H7 | 0.9300 |
| O3W—Cd1—O3Wi | 92.1 (4) | Cd1—O3W—H1B | 128 (6) |
| O3W—Cd1—O1i | 100.3 (3) | H1A—O3W—H1B | 105 (9) |
| O3Wi—Cd1—O1i | 140.0 (2) | O2—C1—O1 | 119.0 (9) |
| O3W—Cd1—O1 | 140.0 (2) | O2—C1—C2 | 118.8 (9) |
| O3Wi—Cd1—O1 | 100.3 (3) | O1—C1—C2 | 122.1 (9) |
| O1i—Cd1—O1 | 94.3 (3) | C3—C2—C1 | 125.3 (9) |
| O3W—Cd1—O2i | 124.6 (3) | C3—C2—H2 | 117.3 |
| O3Wi—Cd1—O2i | 86.4 (2) | C1—C2—H2 | 117.3 |
| O1i—Cd1—O2i | 55.3 (2) | C2—C3—C4 | 126.4 (8) |
| O1—Cd1—O2i | 94.2 (2) | C2—C3—H3 | 116.8 |
| O3W—Cd1—O2 | 86.4 (2) | C4—C3—H3 | 116.8 |
| O3Wi—Cd1—O2 | 124.6 (3) | C5—C4—C7 | 117.8 (9) |
| O1i—Cd1—O2 | 94.2 (2) | C5—C4—C3 | 122.0 (9) |
| O1—Cd1—O2 | 55.3 (2) | C7—C4—C3 | 120.2 (8) |
| O2i—Cd1—O2 | 137.3 (3) | C6—C5—C4 | 122.6 (10) |
| O3W—Cd1—C1i | 116.0 (3) | C6—C5—H5 | 118.7 |
| O3Wi—Cd1—C1i | 113.7 (3) | C4—C5—H5 | 118.7 |
| O1i—Cd1—C1i | 27.7 (3) | C5—C6—C5ii | 118.5 (12) |
| O1—Cd1—C1i | 93.6 (3) | C5—C6—H6 | 120.7 |
| O2i—Cd1—C1i | 27.7 (3) | C5ii—C6—H6 | 120.7 |
| O2—Cd1—C1i | 116.4 (3) | C4ii—C7—C4 | 120.8 (11) |
| C1—O1—Cd1 | 93.9 (6) | C4ii—C7—H7 | 119.6 |
| C1—O2—Cd1 | 91.5 (5) | C4—C7—H7 | 119.6 |
| Cd1—O3W—H1A | 127 (6) |
| H··· | ||||
| O3 | 0.85 (2) | 1.88 (4) | 2.695 (9) | 160 (8) |
| O3 | 0.84 (2) | 1.92 (3) | 2.736 (8) | 162 (8) |
Selected bond lengths ()
| Cd1O1 | 2.329(6) |
| Cd1O2 | 2.380(6) |
| Cd1O3 | 2.199(7) |
Hydrogen-bond geometry (, )
|
|
| H |
|
|
|---|---|---|---|---|
| O3 | 0.85(2) | 1.88(4) | 2.695(9) | 160(8) |
| O3 | 0.84(2) | 1.92(3) | 2.736(8) | 162(8) |
Symmetry codes: (i) ; (ii) .