Tetra-aqua-bis(2-methyl-benzimidazolium-1,3-diacetato-?O)zinc(II) tetra-hydrate.

ABSTRACT: The asymmetric unit of the title compound, [Zn(C(12)H(11)N(2)O(4))(2)(H(2)O)(4)]·4H(2)O, contains one-half of the complex mol-ecule and two uncoordin-ated water mol-ecules. The four water O atoms in the equatorial plane around the Zn(II) centre ( symmetry) form a distorted square-planar arrangement, while the distorted octa-hedral coordination geometry is completed by the O atoms of the zwitterionic 2-methyl-benzimidazolium-1,3-diacetate ligands in the axial positions. The benzimidazole ring system is planar, with a maximum deviation of 0.041?(3)?Å. Intra-molecular O-H?O hydrogen bonding results in the formation of a non-planar six-membered ring. In the crystal structure, strong intra- and inter-molecular O-H?O hydrogen bonds link the mol-ecules into a three-dimensional network. ?-? contacts between benzimidazole rings [centroid-centroid distance = 3.899?(1)?Å] may further stabilize the structure.

SUBMITTER: Lian HC 

PROVIDER: S-EPMC2969862 | biostudies-other | 2009

REPOSITORIES: biostudies-other