metal-organic compounds
Tetraaqua(1,10-phenanthroline-κ2N,N′)cadmium(II) sulfate dihydrate
aDepartment of Chemistry, Capital Normal University, Beijing 100048, People's Republic of China, and bBeijing Key Laboratory for Terahertz Spectroscopy and Imaging, Key Laboratory of Terahertz Optoelectronics, Ministry of Education, Capital Normal University, Beijing 100048, People's Republic of China
*Correspondence e-mail: jinqh204@163.com
In the title mononuclear complex, [Cd(C12H8N2)(H2O)4]SO4·2H2O, the coordination geometry around the CdII atom is a distorted octahedron, with two aqua ligands occupying the axial positions. Intermolecular O—H⋯O hydrogen bonds lead to the formation of a two-dimensional layer structure parallel to (001). The layers are connected by π–π interactions between the pyridyl and benzene rings of the phenanthroline ligands [centroid–centroid distances = 3.591 (1) and 3.610 (1) Å].
Related literature
For general backgound to supramolecular structures with coordination frameworks, see: Bie et al. (2006); Huang et al. (2010); Wu et al. (2009). For related structures, see: Li et al. (2003); Zheng & Lin (2003).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2007); cell SAINT-Plus (Bruker, 2007); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536810028175/hy2328sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810028175/hy2328Isup2.hkl
A mixture of CdSO4.8H2O (0.2 mmol), biimidazole (0.1 mmol), H2O (15 ml) and 1,10-phenanthroline (0.2 mmol) was sealed in a 25 ml Teflon-lined stainless-steel reactor and heated to 160°C for 72 h. After cooling, colorless crystals of the title compound were obtained.
C-bound H atoms were positioned geometrically and refined as riding atoms, with C—H = 0.93 Å and Uiso(H) = 1.2Ueq(C). The water H atoms were located in a difference Fourier map and refined as riding, with O—H = 0.85 Å and Uiso(H) = 1.2Ueq(O).
Supramolecular compounds with coordination frameworks have received increasing attention due to their fascinating architectures and potential applications as functional materials of catalysis, magnetism, superconductor, non-linear optical materials and molecular recognition (Bie et al., 2006; Huang et al., 2010; Wu et al., 2009). In this paper, we report the structure of the title compound, a new cadmium(II) complex.
The CdII atom is six-coordinated by two N atoms from a phenanthroline (phen) ligand, four O atoms from water molecules, forming a [Cd(phen)(H2O)4]2+ cation. The structure contains a sulfate anion to balance the charge and two uncoordinated molecules (Fig. 1). The complex cations, sulfate anions and water molecules are held together via O—H···O hydrogen bonds (Table 1), forming a two-dimensional layer. Interdigitation of phen ligands leads to the formation of a three-dimensional network (Fig.2), stabilized by significant π–π stacking interactions between the pyridyl and benzene rings of the phen ligands [centroid–centroid distances = 3.591 (1) and 3.610 (1) Å].
The Cd—O distances of 2.260 (3)–2.304 (2)Å in the title compound are slightly longer than the reported Cd—O distances of 2.246 (2)–2.325 (3) Å, and Cd—N distances of 2.317 (3)–2.337 (3)Å are shorter than the reported Cd—N distances of 2.318 (3)–2.351 (2)Å (Bie et al., 2006). The cis O—Cd—O angles are in the range of 82.52 (9)–96.46 (11)° and the trans one is 165.28 (9)°. The cis N—Cd—O angles are in the range of 87.35 (10)–105.41 (10)° and the trans ones are 160.98 (12) and 168.48 (11)°. The N—Cd—N angle is 72.09 (11)°. These confirm the distorted octahedral environment around the CdII atom. It is noticable that in the similar complexes reported, [Cd(SO4)(C12H8N2)(H2O)3] (Li et al., 2003), [Cd(C12H8N2)(H2O)2(SO4)]n (Bie et al., 2006) and [Mn(C12H8N2)(H2O)2(SO4)] (Zheng & Lin, 2003), the center metals are coordinated to O atom from sulfate, while in the title compound the sulfate acts as a free anion.
For general backgound to supramolecular compounds with coordination frameworks, see: Bie et al. (2006); Huang et al. (2010); Wu et al. (2009). For related structures, see: Li et al. (2003); Zheng & Lin (2003).
Data collection: SMART (Bruker, 2007); cell
SAINT-Plus (Bruker, 2007); data reduction: SAINT-Plus (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. Molecular structure of the title complex. Displacement ellipsoids are drawn at the 50% probability level. H atoms are omitted for clarity. | |
Fig. 2. Crystal packing of the title complex. Dashed lines denote hydrogen bonds. |
[Cd(C12H8N2)(H2O)4]SO4·2H2O | F(000) = 2000.0 |
Mr = 496.78 | Dx = 1.786 Mg m−3 |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 8439 reflections |
a = 8.8398 (9) Å | θ = 2.2–28.1° |
b = 18.6996 (19) Å | µ = 1.35 mm−1 |
c = 22.349 (2) Å | T = 298 K |
V = 3694.3 (6) Å3 | Block, yellow |
Z = 8 | 0.41 × 0.30 × 0.27 mm |
Bruker APEX CCD diffractometer | 3266 independent reflections |
Radiation source: fine-focus sealed tube | 2789 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.045 |
φ and ω scans | θmax = 25.0°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | h = −10→7 |
Tmin = 0.622, Tmax = 0.695 | k = −22→22 |
17188 measured reflections | l = −22→26 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.033 | H-atom parameters constrained |
wR(F2) = 0.065 | w = 1/[σ2(Fo2) + (0.0047P)2 + 7.3452P] where P = (Fo2 + 2Fc2)/3 |
S = 1.16 | (Δ/σ)max = 0.001 |
3266 reflections | Δρmax = 0.52 e Å−3 |
236 parameters | Δρmin = −0.46 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.00446 (16) |
[Cd(C12H8N2)(H2O)4]SO4·2H2O | V = 3694.3 (6) Å3 |
Mr = 496.78 | Z = 8 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 8.8398 (9) Å | µ = 1.35 mm−1 |
b = 18.6996 (19) Å | T = 298 K |
c = 22.349 (2) Å | 0.41 × 0.30 × 0.27 mm |
Bruker APEX CCD diffractometer | 3266 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2001) | 2789 reflections with I > 2σ(I) |
Tmin = 0.622, Tmax = 0.695 | Rint = 0.045 |
17188 measured reflections |
R[F2 > 2σ(F2)] = 0.033 | 0 restraints |
wR(F2) = 0.065 | H-atom parameters constrained |
S = 1.16 | Δρmax = 0.52 e Å−3 |
3266 reflections | Δρmin = −0.46 e Å−3 |
236 parameters |
x | y | z | Uiso*/Ueq | ||
Cd1 | 0.63465 (3) | 0.587420 (13) | 0.411381 (11) | 0.03164 (12) | |
N1 | 0.7363 (4) | 0.52699 (16) | 0.33033 (14) | 0.0367 (7) | |
N2 | 0.5467 (4) | 0.64254 (17) | 0.32424 (14) | 0.0379 (8) | |
O1 | 0.4794 (3) | 0.49034 (13) | 0.42568 (12) | 0.0433 (7) | |
H1A | 0.5121 | 0.4505 | 0.4127 | 0.052* | |
H1B | 0.4110 | 0.4828 | 0.4516 | 0.052* | |
O2 | 0.7916 (3) | 0.68309 (13) | 0.42330 (11) | 0.0392 (6) | |
H2A | 0.7508 | 0.7241 | 0.4202 | 0.047* | |
H2B | 0.8638 | 0.6858 | 0.4483 | 0.047* | |
O3 | 0.4697 (3) | 0.64814 (14) | 0.46954 (13) | 0.0505 (8) | |
H3A | 0.4856 | 0.6921 | 0.4769 | 0.061* | |
H3B | 0.3776 | 0.6393 | 0.4775 | 0.061* | |
O4 | 0.7684 (3) | 0.53557 (13) | 0.48847 (12) | 0.0433 (7) | |
H4A | 0.7885 | 0.4911 | 0.4880 | 0.052* | |
H4B | 0.8429 | 0.5579 | 0.5037 | 0.052* | |
O5 | 0.8325 (3) | 0.31356 (13) | 0.41435 (12) | 0.0445 (7) | |
O6 | 1.0491 (3) | 0.38259 (15) | 0.44410 (13) | 0.0500 (8) | |
O7 | 0.8156 (3) | 0.39447 (14) | 0.49742 (14) | 0.0517 (8) | |
O8 | 0.9605 (3) | 0.28672 (13) | 0.50624 (13) | 0.0489 (8) | |
O9 | 0.9479 (3) | 0.86732 (14) | 0.37107 (13) | 0.0499 (8) | |
H9A | 0.8684 | 0.8471 | 0.3842 | 0.060* | |
H9B | 1.0241 | 0.8436 | 0.3830 | 0.060* | |
O10 | 0.7963 (3) | 0.20834 (17) | 0.59585 (14) | 0.0601 (8) | |
H10A | 0.8254 | 0.2339 | 0.5666 | 0.072* | |
H10B | 0.7303 | 0.1791 | 0.5829 | 0.072* | |
S1 | 0.91417 (11) | 0.34438 (4) | 0.46528 (4) | 0.0313 (2) | |
C1 | 0.8259 (5) | 0.4706 (2) | 0.3331 (2) | 0.0528 (12) | |
H1 | 0.8577 | 0.4545 | 0.3704 | 0.063* | |
C2 | 0.8748 (6) | 0.4343 (3) | 0.2817 (3) | 0.0679 (15) | |
H2 | 0.9362 | 0.3941 | 0.2850 | 0.082* | |
C3 | 0.8315 (6) | 0.4584 (3) | 0.2274 (3) | 0.0711 (16) | |
H3 | 0.8640 | 0.4348 | 0.1931 | 0.085* | |
C4 | 0.7386 (5) | 0.5184 (3) | 0.22216 (19) | 0.0513 (12) | |
C5 | 0.6928 (4) | 0.5516 (2) | 0.27550 (16) | 0.0370 (9) | |
C6 | 0.5959 (4) | 0.6128 (2) | 0.27248 (16) | 0.0361 (9) | |
C7 | 0.5517 (5) | 0.6411 (3) | 0.21632 (18) | 0.0500 (12) | |
C8 | 0.4601 (6) | 0.7016 (3) | 0.2162 (2) | 0.0628 (14) | |
H8 | 0.4307 | 0.7218 | 0.1800 | 0.075* | |
C9 | 0.4140 (6) | 0.7310 (3) | 0.2677 (2) | 0.0643 (14) | |
H9 | 0.3534 | 0.7716 | 0.2676 | 0.077* | |
C10 | 0.4585 (5) | 0.6996 (2) | 0.3217 (2) | 0.0508 (11) | |
H10 | 0.4246 | 0.7197 | 0.3574 | 0.061* | |
C11 | 0.6927 (6) | 0.5484 (3) | 0.1662 (2) | 0.0679 (15) | |
H11 | 0.7245 | 0.5269 | 0.1308 | 0.081* | |
C12 | 0.6042 (6) | 0.6069 (3) | 0.1636 (2) | 0.0663 (15) | |
H12 | 0.5770 | 0.6254 | 0.1265 | 0.080* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cd1 | 0.03948 (18) | 0.02569 (15) | 0.02976 (16) | 0.00082 (12) | 0.00038 (12) | −0.00058 (12) |
N1 | 0.0370 (18) | 0.0301 (17) | 0.0429 (19) | −0.0027 (15) | 0.0088 (15) | −0.0022 (14) |
N2 | 0.040 (2) | 0.0347 (18) | 0.0389 (18) | −0.0004 (15) | −0.0040 (16) | 0.0039 (14) |
O1 | 0.0472 (17) | 0.0317 (14) | 0.0510 (17) | −0.0061 (13) | 0.0075 (14) | −0.0014 (12) |
O2 | 0.0394 (15) | 0.0253 (13) | 0.0530 (17) | 0.0024 (12) | −0.0097 (13) | −0.0017 (12) |
O3 | 0.0479 (18) | 0.0342 (15) | 0.069 (2) | −0.0064 (13) | 0.0238 (15) | −0.0175 (14) |
O4 | 0.0484 (17) | 0.0236 (13) | 0.0579 (17) | 0.0007 (12) | −0.0196 (14) | 0.0005 (12) |
O5 | 0.0478 (17) | 0.0312 (14) | 0.0545 (17) | −0.0085 (13) | −0.0188 (14) | 0.0023 (13) |
O6 | 0.0409 (17) | 0.0461 (17) | 0.0632 (19) | −0.0136 (14) | 0.0002 (15) | −0.0023 (14) |
O7 | 0.0480 (18) | 0.0301 (15) | 0.077 (2) | 0.0033 (13) | 0.0094 (16) | −0.0063 (14) |
O8 | 0.0584 (19) | 0.0302 (15) | 0.0580 (18) | 0.0041 (13) | −0.0206 (15) | 0.0032 (13) |
O9 | 0.0431 (17) | 0.0403 (16) | 0.066 (2) | 0.0016 (14) | 0.0109 (15) | 0.0069 (14) |
O10 | 0.0499 (19) | 0.061 (2) | 0.070 (2) | 0.0017 (16) | −0.0032 (17) | −0.0018 (16) |
S1 | 0.0291 (5) | 0.0196 (4) | 0.0451 (5) | −0.0003 (4) | −0.0060 (4) | −0.0012 (4) |
C1 | 0.050 (3) | 0.041 (2) | 0.067 (3) | 0.003 (2) | 0.015 (2) | 0.000 (2) |
C2 | 0.062 (3) | 0.052 (3) | 0.090 (4) | 0.009 (3) | 0.026 (3) | −0.018 (3) |
C3 | 0.067 (4) | 0.077 (4) | 0.069 (4) | −0.006 (3) | 0.026 (3) | −0.027 (3) |
C4 | 0.046 (3) | 0.062 (3) | 0.046 (3) | −0.015 (2) | 0.016 (2) | −0.013 (2) |
C5 | 0.032 (2) | 0.045 (2) | 0.035 (2) | −0.0137 (18) | 0.0064 (17) | −0.0060 (17) |
C6 | 0.032 (2) | 0.043 (2) | 0.034 (2) | −0.0137 (18) | 0.0001 (17) | 0.0022 (17) |
C7 | 0.044 (3) | 0.068 (3) | 0.038 (2) | −0.023 (2) | −0.004 (2) | 0.007 (2) |
C8 | 0.056 (3) | 0.073 (3) | 0.060 (3) | −0.014 (3) | −0.019 (3) | 0.026 (3) |
C9 | 0.061 (3) | 0.058 (3) | 0.074 (4) | −0.003 (3) | −0.020 (3) | 0.015 (3) |
C10 | 0.051 (3) | 0.045 (3) | 0.056 (3) | 0.003 (2) | −0.008 (2) | 0.004 (2) |
C11 | 0.066 (3) | 0.101 (4) | 0.036 (3) | −0.019 (3) | 0.013 (2) | −0.013 (3) |
C12 | 0.062 (3) | 0.101 (4) | 0.036 (3) | −0.020 (3) | −0.001 (2) | 0.007 (3) |
Cd1—O3 | 2.260 (3) | O9—H9B | 0.8500 |
Cd1—O2 | 2.280 (2) | O10—H10A | 0.8500 |
Cd1—O1 | 2.298 (3) | O10—H10B | 0.8500 |
Cd1—O4 | 2.304 (2) | C1—C2 | 1.403 (6) |
Cd1—N1 | 2.317 (3) | C1—H1 | 0.9300 |
Cd1—N2 | 2.337 (3) | C2—C3 | 1.350 (7) |
N1—C1 | 1.320 (5) | C2—H2 | 0.9300 |
N1—C5 | 1.364 (5) | C3—C4 | 1.396 (7) |
N2—C10 | 1.323 (5) | C3—H3 | 0.9300 |
N2—C6 | 1.355 (5) | C4—C5 | 1.403 (5) |
O1—H1A | 0.8500 | C4—C11 | 1.429 (7) |
O1—H1B | 0.8499 | C5—C6 | 1.432 (6) |
O2—H2A | 0.8499 | C6—C7 | 1.417 (5) |
O2—H2B | 0.8500 | C7—C8 | 1.392 (7) |
O3—H3A | 0.8500 | C7—C12 | 1.418 (7) |
O3—H3B | 0.8500 | C8—C9 | 1.340 (7) |
O4—H4A | 0.8500 | C8—H8 | 0.9300 |
O4—H4B | 0.8500 | C9—C10 | 1.398 (6) |
O5—S1 | 1.466 (3) | C9—H9 | 0.9300 |
O6—S1 | 1.469 (3) | C10—H10 | 0.9300 |
O7—S1 | 1.467 (3) | C11—C12 | 1.347 (7) |
O8—S1 | 1.473 (3) | C11—H11 | 0.9300 |
O9—H9A | 0.8500 | C12—H12 | 0.9300 |
O3—Cd1—O2 | 86.06 (9) | O7—S1—O8 | 109.16 (18) |
O3—Cd1—O1 | 86.08 (10) | O6—S1—O8 | 109.31 (18) |
O2—Cd1—O1 | 165.28 (9) | N1—C1—C2 | 122.2 (5) |
O3—Cd1—O4 | 96.46 (11) | N1—C1—H1 | 118.9 |
O2—Cd1—O4 | 86.02 (9) | C2—C1—H1 | 118.9 |
O1—Cd1—O4 | 82.52 (9) | C3—C2—C1 | 119.1 (5) |
O3—Cd1—N1 | 160.98 (12) | C3—C2—H2 | 120.4 |
O2—Cd1—N1 | 103.77 (10) | C1—C2—H2 | 120.4 |
O1—Cd1—N1 | 87.42 (10) | C2—C3—C4 | 120.8 (5) |
O4—Cd1—N1 | 100.39 (10) | C2—C3—H3 | 119.6 |
O3—Cd1—N2 | 92.46 (11) | C4—C3—H3 | 119.6 |
O2—Cd1—N2 | 87.35 (10) | C3—C4—C5 | 116.9 (4) |
O1—Cd1—N2 | 105.41 (10) | C3—C4—C11 | 123.8 (5) |
O4—Cd1—N2 | 168.48 (11) | C5—C4—C11 | 119.3 (5) |
N1—Cd1—N2 | 72.09 (11) | N1—C5—C4 | 122.2 (4) |
C1—N1—C5 | 118.7 (4) | N1—C5—C6 | 118.7 (3) |
C1—N1—Cd1 | 125.8 (3) | C4—C5—C6 | 119.0 (4) |
C5—N1—Cd1 | 115.4 (2) | N2—C6—C7 | 120.9 (4) |
C10—N2—C6 | 119.0 (3) | N2—C6—C5 | 118.7 (3) |
C10—N2—Cd1 | 126.0 (3) | C7—C6—C5 | 120.4 (4) |
C6—N2—Cd1 | 115.0 (2) | C8—C7—C6 | 117.8 (4) |
Cd1—O1—H1A | 116.2 | C8—C7—C12 | 123.7 (5) |
Cd1—O1—H1B | 130.6 | C6—C7—C12 | 118.5 (5) |
H1A—O1—H1B | 109.3 | C9—C8—C7 | 120.5 (4) |
Cd1—O2—H2A | 116.1 | C9—C8—H8 | 119.7 |
Cd1—O2—H2B | 125.5 | C7—C8—H8 | 119.7 |
H2A—O2—H2B | 108.6 | C8—C9—C10 | 119.0 (5) |
Cd1—O3—H3A | 119.4 | C8—C9—H9 | 120.5 |
Cd1—O3—H3B | 129.9 | C10—C9—H9 | 120.5 |
H3A—O3—H3B | 107.8 | N2—C10—C9 | 122.7 (5) |
Cd1—O4—H4A | 120.7 | N2—C10—H10 | 118.6 |
Cd1—O4—H4B | 119.3 | C9—C10—H10 | 118.6 |
H4A—O4—H4B | 108.8 | C12—C11—C4 | 121.4 (5) |
H9A—O9—H9B | 108.3 | C12—C11—H11 | 119.3 |
H10A—O10—H10B | 107.9 | C4—C11—H11 | 119.3 |
O5—S1—O7 | 109.79 (17) | C11—C12—C7 | 121.3 (5) |
O5—S1—O6 | 109.95 (17) | C11—C12—H12 | 119.3 |
O7—S1—O6 | 109.24 (17) | C7—C12—H12 | 119.3 |
O5—S1—O8 | 109.38 (15) | ||
O3—Cd1—N1—C1 | −141.9 (4) | Cd1—N1—C5—C6 | 2.5 (4) |
O2—Cd1—N1—C1 | 98.5 (3) | C3—C4—C5—N1 | 0.1 (6) |
O1—Cd1—N1—C1 | −71.8 (3) | C11—C4—C5—N1 | −178.0 (4) |
O4—Cd1—N1—C1 | 10.1 (3) | C3—C4—C5—C6 | −179.2 (4) |
N2—Cd1—N1—C1 | −178.9 (3) | C11—C4—C5—C6 | 2.7 (6) |
O3—Cd1—N1—C5 | 35.5 (5) | C10—N2—C6—C7 | −1.2 (6) |
O2—Cd1—N1—C5 | −84.1 (3) | Cd1—N2—C6—C7 | −179.7 (3) |
O1—Cd1—N1—C5 | 105.6 (3) | C10—N2—C6—C5 | 179.2 (3) |
O4—Cd1—N1—C5 | −172.5 (2) | Cd1—N2—C6—C5 | 0.7 (4) |
N2—Cd1—N1—C5 | −1.5 (2) | N1—C5—C6—N2 | −2.2 (5) |
O3—Cd1—N2—C10 | 13.4 (3) | C4—C5—C6—N2 | 177.1 (4) |
O2—Cd1—N2—C10 | −72.6 (3) | N1—C5—C6—C7 | 178.2 (3) |
O1—Cd1—N2—C10 | 100.0 (3) | C4—C5—C6—C7 | −2.5 (5) |
O4—Cd1—N2—C10 | −127.4 (5) | N2—C6—C7—C8 | 1.9 (6) |
N1—Cd1—N2—C10 | −178.0 (4) | C5—C6—C7—C8 | −178.6 (4) |
O3—Cd1—N2—C6 | −168.3 (3) | N2—C6—C7—C12 | −178.8 (4) |
O2—Cd1—N2—C6 | 105.8 (3) | C5—C6—C7—C12 | 0.7 (6) |
O1—Cd1—N2—C6 | −81.6 (3) | C6—C7—C8—C9 | −1.0 (7) |
O4—Cd1—N2—C6 | 50.9 (6) | C12—C7—C8—C9 | 179.7 (5) |
N1—Cd1—N2—C6 | 0.4 (2) | C7—C8—C9—C10 | −0.4 (7) |
C5—N1—C1—C2 | −1.6 (6) | C6—N2—C10—C9 | −0.3 (6) |
Cd1—N1—C1—C2 | 175.7 (3) | Cd1—N2—C10—C9 | 178.0 (3) |
N1—C1—C2—C3 | 1.4 (8) | C8—C9—C10—N2 | 1.2 (7) |
C1—C2—C3—C4 | −0.4 (8) | C3—C4—C11—C12 | −179.2 (5) |
C2—C3—C4—C5 | −0.3 (7) | C5—C4—C11—C12 | −1.2 (7) |
C2—C3—C4—C11 | 177.8 (5) | C4—C11—C12—C7 | −0.6 (8) |
C1—N1—C5—C4 | 0.8 (6) | C8—C7—C12—C11 | −180.0 (5) |
Cd1—N1—C5—C4 | −176.8 (3) | C6—C7—C12—C11 | 0.8 (7) |
C1—N1—C5—C6 | −179.9 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···O9i | 0.85 | 1.85 | 2.682 (4) | 167 |
O1—H1B···O4ii | 0.85 | 2.10 | 2.952 (4) | 176 |
O2—H2A···O5iii | 0.85 | 1.83 | 2.682 (3) | 178 |
O2—H2B···O8iv | 0.85 | 1.93 | 2.757 (4) | 165 |
O3—H3A···O8iii | 0.85 | 1.95 | 2.787 (4) | 170 |
O3—H3B···O7ii | 0.85 | 1.90 | 2.746 (4) | 170 |
O4—H4A···O7 | 0.85 | 1.84 | 2.679 (4) | 171 |
O4—H4B···O6iv | 0.85 | 1.87 | 2.686 (4) | 159 |
O9—H9A···O5iii | 0.85 | 2.00 | 2.844 (4) | 172 |
O9—H9B···O10iv | 0.85 | 1.92 | 2.768 (4) | 176 |
O10—H10A···O8 | 0.85 | 2.05 | 2.875 (4) | 162 |
O10—H10B···O6v | 0.85 | 2.06 | 2.909 (4) | 172 |
Symmetry codes: (i) −x+3/2, y−1/2, z; (ii) −x+1, −y+1, −z+1; (iii) −x+3/2, y+1/2, z; (iv) −x+2, −y+1, −z+1; (v) x−1/2, −y+1/2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | [Cd(C12H8N2)(H2O)4]SO4·2H2O |
Mr | 496.78 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 298 |
a, b, c (Å) | 8.8398 (9), 18.6996 (19), 22.349 (2) |
V (Å3) | 3694.3 (6) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 1.35 |
Crystal size (mm) | 0.41 × 0.30 × 0.27 |
Data collection | |
Diffractometer | Bruker APEX CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2001) |
Tmin, Tmax | 0.622, 0.695 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 17188, 3266, 2789 |
Rint | 0.045 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.033, 0.065, 1.16 |
No. of reflections | 3266 |
No. of parameters | 236 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.52, −0.46 |
Computer programs: SMART (Bruker, 2007), SAINT-Plus (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···O9i | 0.85 | 1.85 | 2.682 (4) | 167 |
O1—H1B···O4ii | 0.85 | 2.10 | 2.952 (4) | 176 |
O2—H2A···O5iii | 0.85 | 1.83 | 2.682 (3) | 178 |
O2—H2B···O8iv | 0.85 | 1.93 | 2.757 (4) | 165 |
O3—H3A···O8iii | 0.85 | 1.95 | 2.787 (4) | 170 |
O3—H3B···O7ii | 0.85 | 1.90 | 2.746 (4) | 170 |
O4—H4A···O7 | 0.85 | 1.84 | 2.679 (4) | 171 |
O4—H4B···O6iv | 0.85 | 1.87 | 2.686 (4) | 159 |
O9—H9A···O5iii | 0.85 | 2.00 | 2.844 (4) | 172 |
O9—H9B···O10iv | 0.85 | 1.92 | 2.768 (4) | 176 |
O10—H10A···O8 | 0.85 | 2.05 | 2.875 (4) | 162 |
O10—H10B···O6v | 0.85 | 2.06 | 2.909 (4) | 172 |
Symmetry codes: (i) −x+3/2, y−1/2, z; (ii) −x+1, −y+1, −z+1; (iii) −x+3/2, y+1/2, z; (iv) −x+2, −y+1, −z+1; (v) x−1/2, −y+1/2, −z+1. |
Acknowledgements
This work was supported by the National Keystone Basic Research Program (973 Program) under grant Nos. 2007CB310408 and 2006CB302901, the Funding Project for Academic Human Resources Development in Institutions of Higher Learning under the Jurisdiction of Beijing Municipality, and the State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences.
References
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Supramolecular compounds with coordination frameworks have received increasing attention due to their fascinating architectures and potential applications as functional materials of catalysis, magnetism, superconductor, non-linear optical materials and molecular recognition (Bie et al., 2006; Huang et al., 2010; Wu et al., 2009). In this paper, we report the structure of the title compound, a new cadmium(II) complex.
The CdII atom is six-coordinated by two N atoms from a phenanthroline (phen) ligand, four O atoms from water molecules, forming a [Cd(phen)(H2O)4]2+ cation. The structure contains a sulfate anion to balance the charge and two uncoordinated molecules (Fig. 1). The complex cations, sulfate anions and water molecules are held together via O—H···O hydrogen bonds (Table 1), forming a two-dimensional layer. Interdigitation of phen ligands leads to the formation of a three-dimensional network (Fig.2), stabilized by significant π–π stacking interactions between the pyridyl and benzene rings of the phen ligands [centroid–centroid distances = 3.591 (1) and 3.610 (1) Å].
The Cd—O distances of 2.260 (3)–2.304 (2)Å in the title compound are slightly longer than the reported Cd—O distances of 2.246 (2)–2.325 (3) Å, and Cd—N distances of 2.317 (3)–2.337 (3)Å are shorter than the reported Cd—N distances of 2.318 (3)–2.351 (2)Å (Bie et al., 2006). The cis O—Cd—O angles are in the range of 82.52 (9)–96.46 (11)° and the trans one is 165.28 (9)°. The cis N—Cd—O angles are in the range of 87.35 (10)–105.41 (10)° and the trans ones are 160.98 (12) and 168.48 (11)°. The N—Cd—N angle is 72.09 (11)°. These confirm the distorted octahedral environment around the CdII atom. It is noticable that in the similar complexes reported, [Cd(SO4)(C12H8N2)(H2O)3] (Li et al., 2003), [Cd(C12H8N2)(H2O)2(SO4)]n (Bie et al., 2006) and [Mn(C12H8N2)(H2O)2(SO4)] (Zheng & Lin, 2003), the center metals are coordinated to O atom from sulfate, while in the title compound the sulfate acts as a free anion.