Research Article: Aqua­bis(1H-benzimidazole-2-carboxyl­ato-κ2O,N3)zinc(II)

Date Published: June 01, 2010

Publisher: International Union of Crystallography

Author(s): Li Li Di, Yue Wang, Guo Wu Lin, Tao Lu.


In the title compound, [Zn(C8H5N2O2)2(H2O)], the ZnII ion is coordinated in each case by a carboxyl­ate O atom and an imidazole N atom from two different benzimidazole-2-carboxyl­ate (BIC) ligands and one water O atom in a trigonal-bipyramidal geometry. In the complex mol­ecule, the two benzimidazole planes are twisted, making a dihedral angle of 55.93 (11)°. The three-dimensional framework is organized by inter­molecular N—H⋯O hydrogen bonding and O—H⋯O inter­actions and π–π inter­actions between adjacent benzimidazole rings [centroid–centroid distance = 3.586 (3) Å].

Partial Text

For the biological activity of zinc complexes, see: Yoshikawa et al. (2001 ▶); Adachi et al. (2004 ▶). For the biological activity of benzimidazole derivatives, see: Shingalapur et al. (2009 ▶). For zinc N-heterocyclic or their carboxyl­ate complexes, see: He (2006 ▶); Li et al. (2007 ▶); Gao et al. (2005 ▶). For the structural index τ, see: Addison et al. (1984 ▶). For related structures, see: Liu et al. (2004 ▶); Lin (2006 ▶); Zhong et al. (2006 ▶).




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