catena-Poly[[dinitratocopper(II)]-μ-4,4′′-bis­(1H-benzimidazol-1-yl)-1,1′:4′,1′′-terphen­yl]

Jiang, H.-S.; Li, H.; Wang, J.; Ma, H.-X.; Zhang, Z.

doi:10.1107/S1600536811013596

Volume 67
Part 5
Page m603
May 2011

Received 10 April 2011
Accepted 11 April 2011
Online 16 April 2011

Key indicators
Single-crystal X-ray study
T = 293 K
Mean (C-C) = 0.004 Å
R = 0.044
wR = 0.124
Data-to-parameter ratio = 11.6
Details

catena-Poly[[dinitratocopper(II)]--4,4''-bis(1H-benzimidazol-1-yl)-1,1':4',1''-terphenyl]

Hong-Shi Jiang,^a ^* Hui Li,^a Jian Wang,^a Hui-Xuan Ma ^a and Zhe Zhang ^a

^aDepartment of Applied Chemistry, Yuncheng University, Yuncheng, Shanxi 044000, People's Republic of China
Correspondence e-mail: lihuiwf@gmail.com

In the title one-dimensional coordination polymer, [Cu(NO₃)₂(C₃₂H₂₂N₄)]_n, the Cu²⁺ ion (site symmetry 2) is coordinated by two nitrate O atoms and two N atoms from two 4,4'-bis(benzoimidazol-1-yl)terphenyl (L) ligands in a distorted cis-CuN₂O₂ square-planar coordination geometry. An alternative description of the metal coordination geometry, if long Cu-O contacts to the bonded nitrate anions are considered, is an extremely distorted cis-CuN₂O₄ octahedron. The complete L ligand is generated by crystallographic twofold symmetry and connects the metal ions into infinite chains propagating in [10 $[\overline{1}]$ ]. The dihedral angle between the benzimidazole ring system and the adjacent benzene (B) ring is 51.12 (11)° and the dihedral angle between the B ring and the central ring is 19.45 (13)°.

Related literature

For background to benzimidazole-derived ligands in coordination polymers, see: Jin et al. (2006); Li et al. (2010); Su et al. (2003).

Experimental

Crystal data

[Cu(NO₃)₂(C₃₂H₂₂N₄)]
M_r = 650.10
Monoclinic, C 2/c
a = 14.960 (3) Å
b = 15.237 (3) Å
c = 12.139 (2) Å
= 103.94 (3)°
V = 2685.7 (9) Å³
Z = 4
Mo K radiation
= 0.88 mm^-1
T = 293 K
0.20 × 0.18 × 0.15 mm

Data collection

Rigaku Mercury CCD diffractometer
Absorption correction: multi-scan (CrystalClear; Rigaku/MSC, 2005) T_min = 0.839, T_max = 0.877
13493 measured reflections
2371 independent reflections
2181 reflections with I > 2(I)
R_int = 0.044

Refinement

R[F² > 2(F²)] = 0.044
wR(F²) = 0.124
S = 1.09
2371 reflections
204 parameters
H-atom parameters constrained
_max = 0.37 e Å^-3
_min = -0.77 e Å^-3

Table 1
Selected bond lengths (Å)

Cu1-N1	1.985 (2)
Cu1-O1	2.025 (2)
Cu1-O3	2.452 (3)

Data collection: CrystalClear (Rigaku/MSC, 2005); cell refinement: CrystalClear; data reduction: CrystalClear; 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.

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HB5843 ).

Acknowledgements

We thank the College Research Program of Yuncheng University [2008114] for funding.

References

Jin, C. M., Lu, H., Wu, L. Y. & Huang, J. (2006). Chem. Commun. pp. 5039-5041.
Li, Z. X., Hu, T. L., Ma, H., Zeng, Y. F., Li, C. J., Tong, M. L. & Bu, X. H. (2010). Cryst. Growth Des. 10, 1138-1144.
Rigaku/MSC (2005). CrystalClear. Rigaku/MSC Inc., The Woodlands, Texas, USA.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Su, C. Y., Cai, Y. P., Chen, C. L., Smith, M. D., Kaim, W. & zur Loye, H. C. (2003). J. Am. Chem. Soc. 125, 8595-8613.

metal-organic compounds