Research Article: Triaqua-1κO,2κ2O-bis­(2,2′-bipyridine)-1κ2N,N′;2κ2N,N′-chlorido-1κCl-μ-terephthalato-1:2κ2O1:O4-dicopper(II) nitrate monohydrate

Date Published: June 01, 2012

Publisher: International Union of Crystallography

Author(s): Yang Liu, Yong-Lan Feng, Dai-Zhi Kuang.


In the binuclear title compound, [Cu2(C8H4O4)Cl(C10H8N2)2(H2O)3]NO3·H2O, the two crystallographically independent CuII ions have similar coordination environments. One of the CuII ions has a square-pyramidal arrangement, which is defined by a water mol­ecule occupying the apical position, with the equatorial ligators consisting of two N atoms from a 2,2′-bipyridine mol­ecule, one carboxyl­ate O atom from a terephthalate ligand and one O atom from a water mol­ecule. The other CuII ion has a similar coordination environment, except that the apical position is occupied by a chloride ligand instead of a water mol­ecule. An O—H⋯O and O—H⋯Cl hydrogen-bonded three-dimensional network is formed between the components.

Partial Text

For related structures, see: Lo et al. (2000 ▶); Xu et al. (2010 ▶). For background on the use of terephthalic acid and bipyridine as ligands in metal–organic frameworks, see, respectively: Wang et al. (2010 ▶); Zhang et al. (2010 ▶).