metal-organic compounds
Poly[[[bis(acetato-κO)copper(II)]-μ-1,4-diimidazol-1-ylbenzene-κ2N3:N3′] dihydrate]
aKey Laboratory of Functional Organometallic Materials, Hengyang Normal University, Department of Chemistry and Materials Science, Hengyang, Hunan 421008, People's Republic of China
*Correspondence e-mail: cmsniu@163.com, hnkdz@yahoo.com.cn
In the title linear coordination polymer, {[Cu(C2H3O2)2(C12H10N4)]·2H2O}n, the CuII atom is coordinated by two N atoms from two different symmetry-related 1,4-diimidazol-1-ylbenzene (dib) ligands and two carboxylate O atoms from two acetate ligands in a square-planar geometry. The Cu atoms are linked by the dib ligands, forming an extended chain. These chains are linked by O—H⋯O hydrogen bonds into a three-dimensional supramolecular network. The CuII atom lies on a center of inversion.
Related literature
For the potential applications of crystalline materials with framework structures, see: Kitagawa & Kondo (1998). For copper complexes with the imidazole heterocycle, see: Huang et al. (2004); Masciocchi et al. (2001). For C—O bond lengths, see: Dong et al. (2009). For a related structure, see: Xie et al. (2007).
Experimental
Crystal data
|
Refinement
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Data collection: APEX2 (Bruker, 2003); cell SAINT (Bruker, 2003); data reduction: SAINT; 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/S160053680904464X/ng2675sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S160053680904464X/ng2675Isup2.hkl
A mixture of Cu(CH3CO2)2.2H2O (0.040 g, 0.2 mmol), 1,4-diimidazol-1-ylbenzene (0.042 g, 0.2 mmol), and H2O (15 ml) was sealed in a 25 ml Teflon-lined stainless steel reactor, which was heated at 433 K for 72 h and then it was cooled to room temperature. Block blue crystals of the title compound were collected.
H atoms bonded to C atoms were placed geometrically and treated as riding. The water H atoms found from Fourier difference maps were refined with restraints for O—H distances (0.8499–0.9046 Å) with Uiso(H) = 1.2Ueq(O).
Recently, a great deal of interest in transition metal complex assembly has been devoted to the development of rational synthetic routes to novel one-, two- and three-dimensional crystal frameworks, due to their potential applications in many areas (Kitagawa, et al., 1998). Particularly, copper complexes with the imidazole heterocycle have been investigated extensively to date (Huang, et al., 2004; Masciocchi et al., 2001). Furthermore, many crystal structures of copper(II) compounds with 4,4'-bipyridine have been determined so far. However, ligand 1,4-diimidazol-1-ylbenzene (dib) is similar to the 4,4'-bipyridine, only one structure of copper complex is known (Xie, et al., 2007). So we have recently prepared a new copper(II) coordination polymer, [Cu(dib)(CH3COO)2]n.2nH2O, (I), with 1,4-diimidazol-1-ylbenzene and copper acetate.
In the title compound, the central CuII ion is four-coordinated by two N atoms from two different dib ligands, two carboxylate O atoms from two acetate ligands in a square planar coordination geometry(Fig. 1). There is one free water molecule in the structure, stabilized by hydrogen bonds. The Cu—O distances are comparable to those found in other crystallographically characterized CuII complexes (Dong et al., 2009). The Cu atoms are linked by the dib ligands, forming an extended chain. These chains are further connected by O—H···O bonds (Table 2) to form a three-dimensional supramolecular architecture (Fig. 2).
For the potential applications of crystal frameworks, see: Kitagawa & Kondo (1998). For copper complexes with the imidazole heterocycle, see: Huang et al. (2004); Masciocchi et al. (2001). For C—O bond lengths, see: Dong et al. (2009). For a related structure, see: Xie et al. (2007).
Data collection: APEX2 (Bruker, 2003); cell
SAINT (Bruker, 2003); data reduction: SAINT (Bruker, 2003); 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).[Cu(C2H3O2)2(C12H10N4)]·2H2O | Z = 1 |
Mr = 427.90 | F(000) = 221 |
Triclinic, P1 | Dx = 1.581 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71069 Å |
a = 4.707 (2) Å | Cell parameters from 2023 reflections |
b = 9.444 (3) Å | θ = 2.3–28.2° |
c = 10.901 (5) Å | µ = 1.26 mm−1 |
α = 72.569 (5)° | T = 293 K |
β = 82.956 (4)° | Block, blue |
γ = 76.766 (5)° | 0.24 × 0.18 × 0.12 mm |
V = 449.3 (3) Å3 |
Bruker SMART APEXII CCD diffractometer | 1562 independent reflections |
Radiation source: fine-focus sealed tube | 1530 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.041 |
φ and ω scans | θmax = 25.0°, θmin = 2.3° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −5→5 |
Tmin = 0.752, Tmax = 0.864 | k = −11→11 |
2248 measured reflections | l = −10→12 |
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)] = 0.036 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.096 | H-atom parameters constrained |
S = 1.06 | w = 1/[σ2(Fo2) + (0.0497P)2 + 0.4024P] where P = (Fo2 + 2Fc2)/3 |
1562 reflections | (Δ/σ)max = 0.001 |
125 parameters | Δρmax = 0.45 e Å−3 |
2 restraints | Δρmin = −0.40 e Å−3 |
[Cu(C2H3O2)2(C12H10N4)]·2H2O | γ = 76.766 (5)° |
Mr = 427.90 | V = 449.3 (3) Å3 |
Triclinic, P1 | Z = 1 |
a = 4.707 (2) Å | Mo Kα radiation |
b = 9.444 (3) Å | µ = 1.26 mm−1 |
c = 10.901 (5) Å | T = 293 K |
α = 72.569 (5)° | 0.24 × 0.18 × 0.12 mm |
β = 82.956 (4)° |
Bruker SMART APEXII CCD diffractometer | 1562 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 1530 reflections with I > 2σ(I) |
Tmin = 0.752, Tmax = 0.864 | Rint = 0.041 |
2248 measured reflections |
R[F2 > 2σ(F2)] = 0.036 | 2 restraints |
wR(F2) = 0.096 | H-atom parameters constrained |
S = 1.06 | Δρmax = 0.45 e Å−3 |
1562 reflections | Δρmin = −0.40 e Å−3 |
125 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 | ||
O2 | 0.6552 (9) | 0.2222 (4) | 0.7045 (4) | 0.0507 (10) | |
O1W | 0.7740 (10) | −0.0100 (5) | 0.9321 (4) | 0.0573 (11) | |
H1WB | 0.7709 | 0.0285 | 0.9990 | 0.069* | |
H1WA | 0.7337 | 0.0638 | 0.8652 | 0.069* | |
Cu1 | 0.5000 | 0.5000 | 0.5000 | 0.0298 (3) | |
C1 | 0.3713 (15) | 0.0609 (6) | 0.6676 (7) | 0.0583 (16) | |
H1A | 0.5335 | −0.0154 | 0.6519 | 0.087* | |
H1B | 0.2185 | 0.0731 | 0.6122 | 0.087* | |
H1C | 0.2995 | 0.0307 | 0.7559 | 0.087* | |
C2 | 0.4695 (11) | 0.2091 (5) | 0.6405 (5) | 0.0376 (11) | |
C3 | 0.2141 (12) | 0.7070 (5) | 0.6631 (5) | 0.0386 (11) | |
H3 | 0.3249 | 0.7797 | 0.6221 | 0.046* | |
C4 | 0.0188 (11) | 0.7151 (5) | 0.7622 (5) | 0.0391 (11) | |
H4 | −0.0301 | 0.7928 | 0.8017 | 0.047* | |
C5 | 0.0373 (10) | 0.5061 (5) | 0.7114 (4) | 0.0331 (10) | |
H5 | −0.0006 | 0.4136 | 0.7116 | 0.040* | |
C6 | −0.4029 (12) | 0.6328 (6) | 0.9800 (5) | 0.0404 (12) | |
H6 | −0.3379 | 0.7225 | 0.9666 | 0.049* | |
C7 | −0.3994 (11) | 0.4103 (6) | 0.9189 (5) | 0.0398 (12) | |
H7 | −0.3317 | 0.3495 | 0.8640 | 0.048* | |
C8 | −0.3014 (10) | 0.5423 (5) | 0.8984 (4) | 0.0293 (9) | |
N1 | 0.2268 (9) | 0.5756 (4) | 0.6310 (4) | 0.0322 (9) | |
N2 | −0.0957 (8) | 0.5866 (4) | 0.7941 (4) | 0.0299 (8) | |
O1 | 0.3507 (8) | 0.3154 (4) | 0.5476 (3) | 0.0382 (8) |
U11 | U22 | U33 | U12 | U13 | U23 | |
O2 | 0.063 (3) | 0.041 (2) | 0.051 (2) | −0.0131 (18) | −0.007 (2) | −0.0136 (18) |
O1W | 0.071 (3) | 0.050 (2) | 0.049 (2) | −0.014 (2) | −0.007 (2) | −0.0092 (18) |
Cu1 | 0.0370 (5) | 0.0274 (5) | 0.0243 (5) | −0.0070 (3) | 0.0054 (3) | −0.0088 (3) |
C1 | 0.072 (4) | 0.035 (3) | 0.068 (4) | −0.021 (3) | −0.001 (3) | −0.010 (3) |
C2 | 0.046 (3) | 0.031 (2) | 0.037 (3) | −0.011 (2) | 0.014 (2) | −0.016 (2) |
C3 | 0.049 (3) | 0.032 (2) | 0.038 (3) | −0.014 (2) | 0.012 (2) | −0.015 (2) |
C4 | 0.048 (3) | 0.032 (2) | 0.040 (3) | −0.011 (2) | 0.012 (2) | −0.018 (2) |
C5 | 0.039 (3) | 0.031 (2) | 0.030 (2) | −0.0069 (19) | 0.006 (2) | −0.0133 (19) |
C6 | 0.052 (3) | 0.034 (2) | 0.041 (3) | −0.016 (2) | 0.014 (2) | −0.019 (2) |
C7 | 0.049 (3) | 0.038 (3) | 0.038 (3) | −0.010 (2) | 0.014 (2) | −0.024 (2) |
C8 | 0.030 (2) | 0.033 (2) | 0.025 (2) | −0.0040 (18) | 0.0030 (17) | −0.0110 (18) |
N1 | 0.039 (2) | 0.0294 (19) | 0.0279 (19) | −0.0059 (16) | 0.0075 (16) | −0.0112 (16) |
N2 | 0.0329 (19) | 0.0298 (19) | 0.0269 (19) | −0.0045 (15) | 0.0052 (15) | −0.0119 (15) |
O1 | 0.048 (2) | 0.0325 (17) | 0.0345 (18) | −0.0127 (15) | 0.0089 (15) | −0.0112 (15) |
O2—C2 | 1.231 (6) | C3—H3 | 0.9300 |
O1W—H1WB | 0.9046 | C4—N2 | 1.373 (6) |
O1W—H1WA | 0.8499 | C4—H4 | 0.9300 |
Cu1—O1 | 1.932 (3) | C5—N1 | 1.314 (6) |
Cu1—O1i | 1.932 (3) | C5—N2 | 1.355 (6) |
Cu1—N1 | 1.986 (4) | C5—H5 | 0.9300 |
Cu1—N1i | 1.986 (4) | C6—C7ii | 1.379 (7) |
C1—C2 | 1.509 (7) | C6—C8 | 1.384 (6) |
C1—H1A | 0.9600 | C6—H6 | 0.9300 |
C1—H1B | 0.9600 | C7—C8 | 1.374 (7) |
C1—H1C | 0.9600 | C7—C6ii | 1.379 (7) |
C2—O1 | 1.273 (6) | C7—H7 | 0.9300 |
C3—C4 | 1.338 (7) | C8—N2 | 1.427 (6) |
C3—N1 | 1.374 (6) | ||
H1WB—O1W—H1WA | 107.9 | N2—C4—H4 | 126.6 |
O1—Cu1—O1i | 180.000 (1) | N1—C5—N2 | 111.3 (4) |
O1—Cu1—N1 | 90.62 (15) | N1—C5—H5 | 124.4 |
O1i—Cu1—N1 | 89.38 (15) | N2—C5—H5 | 124.4 |
O1—Cu1—N1i | 89.38 (15) | C7ii—C6—C8 | 119.8 (5) |
O1i—Cu1—N1i | 90.62 (15) | C7ii—C6—H6 | 120.1 |
N1—Cu1—N1i | 180.000 (1) | C8—C6—H6 | 120.1 |
C2—C1—H1A | 109.5 | C8—C7—C6ii | 120.6 (4) |
C2—C1—H1B | 109.5 | C8—C7—H7 | 119.7 |
H1A—C1—H1B | 109.5 | C6ii—C7—H7 | 119.7 |
C2—C1—H1C | 109.5 | C7—C8—C6 | 119.6 (4) |
H1A—C1—H1C | 109.5 | C7—C8—N2 | 120.6 (4) |
H1B—C1—H1C | 109.5 | C6—C8—N2 | 119.8 (4) |
O2—C2—O1 | 123.7 (5) | C5—N1—C3 | 105.6 (4) |
O2—C2—C1 | 120.9 (5) | C5—N1—Cu1 | 127.6 (3) |
O1—C2—C1 | 115.3 (5) | C3—N1—Cu1 | 126.6 (3) |
C4—C3—N1 | 109.9 (4) | C5—N2—C4 | 106.4 (4) |
C4—C3—H3 | 125.0 | C5—N2—C8 | 126.7 (4) |
N1—C3—H3 | 125.0 | C4—N2—C8 | 126.7 (4) |
C3—C4—N2 | 106.8 (4) | C2—O1—Cu1 | 116.1 (3) |
C3—C4—H4 | 126.6 | ||
N1—C3—C4—N2 | 0.0 (6) | N1—C5—N2—C4 | 0.3 (6) |
C6ii—C7—C8—C6 | −0.2 (9) | N1—C5—N2—C8 | −176.4 (4) |
C6ii—C7—C8—N2 | 179.7 (5) | C3—C4—N2—C5 | −0.2 (6) |
C7ii—C6—C8—C7 | 0.2 (9) | C3—C4—N2—C8 | 176.5 (5) |
C7ii—C6—C8—N2 | −179.7 (5) | C7—C8—N2—C5 | −4.4 (7) |
N2—C5—N1—C3 | −0.3 (6) | C6—C8—N2—C5 | 175.5 (5) |
N2—C5—N1—Cu1 | 175.0 (3) | C7—C8—N2—C4 | 179.6 (5) |
C4—C3—N1—C5 | 0.1 (6) | C6—C8—N2—C4 | −0.5 (7) |
C4—C3—N1—Cu1 | −175.2 (4) | O2—C2—O1—Cu1 | 4.9 (6) |
O1—Cu1—N1—C5 | 1.0 (4) | C1—C2—O1—Cu1 | −174.2 (4) |
O1i—Cu1—N1—C5 | −179.0 (4) | N1—Cu1—O1—C2 | −86.6 (3) |
O1—Cu1—N1—C3 | 175.3 (4) | N1i—Cu1—O1—C2 | 93.4 (3) |
O1i—Cu1—N1—C3 | −4.7 (4) |
Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) −x−1, −y+1, −z+2. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1WA···O2 | 0.85 | 1.94 | 2.792 (6) | 176 |
O1W—H1WB···O1Wiii | 0.90 | 2.31 | 2.807 (7) | 114 |
Symmetry code: (iii) −x+2, −y, −z+2. |
Experimental details
Crystal data | |
Chemical formula | [Cu(C2H3O2)2(C12H10N4)]·2H2O |
Mr | 427.90 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 4.707 (2), 9.444 (3), 10.901 (5) |
α, β, γ (°) | 72.569 (5), 82.956 (4), 76.766 (5) |
V (Å3) | 449.3 (3) |
Z | 1 |
Radiation type | Mo Kα |
µ (mm−1) | 1.26 |
Crystal size (mm) | 0.24 × 0.18 × 0.12 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.752, 0.864 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 2248, 1562, 1530 |
Rint | 0.041 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.036, 0.096, 1.06 |
No. of reflections | 1562 |
No. of parameters | 125 |
No. of restraints | 2 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.45, −0.40 |
Computer programs: APEX2 (Bruker, 2003), SAINT (Bruker, 2003), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O1W—H1WA···O2 | 0.85 | 1.94 | 2.792 (6) | 176.0 |
O1W—H1WB···O1Wi | 0.90 | 2.31 | 2.807 (7) | 114.00 |
Symmetry code: (i) −x+2, −y, −z+2. |
Acknowledgements
This work was supported by the Construct Program of the Key Discipline of Hunan Province, the Hengyang Bureau of Science & Technology (grant No. 2009 K J29) and the Research Award Fund for Outstanding Young Teachers of Hunan Province (2008).
References
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Recently, a great deal of interest in transition metal complex assembly has been devoted to the development of rational synthetic routes to novel one-, two- and three-dimensional crystal frameworks, due to their potential applications in many areas (Kitagawa, et al., 1998). Particularly, copper complexes with the imidazole heterocycle have been investigated extensively to date (Huang, et al., 2004; Masciocchi et al., 2001). Furthermore, many crystal structures of copper(II) compounds with 4,4'-bipyridine have been determined so far. However, ligand 1,4-diimidazol-1-ylbenzene (dib) is similar to the 4,4'-bipyridine, only one structure of copper complex is known (Xie, et al., 2007). So we have recently prepared a new copper(II) coordination polymer, [Cu(dib)(CH3COO)2]n.2nH2O, (I), with 1,4-diimidazol-1-ylbenzene and copper acetate.
In the title compound, the central CuII ion is four-coordinated by two N atoms from two different dib ligands, two carboxylate O atoms from two acetate ligands in a square planar coordination geometry(Fig. 1). There is one free water molecule in the structure, stabilized by hydrogen bonds. The Cu—O distances are comparable to those found in other crystallographically characterized CuII complexes (Dong et al., 2009). The Cu atoms are linked by the dib ligands, forming an extended chain. These chains are further connected by O—H···O bonds (Table 2) to form a three-dimensional supramolecular architecture (Fig. 2).