Catena-Poly[zinc-tris-(?-dimethyl-carbamato-?O:O')-zinc-?-(2-phenyl-benzimidazolido-?N:N'].

ABSTRACT: The crystal structure of the title compound, [Zn(2)(C(13)H(9)N(2))(C(3)H(6)NO(2))(3)](n), displays a long chiral chain. This is composed of zinc-dimer clusters capped by dimethyl-carbamate ligands, which lie on crystallographic twofold rotation axes and are polymerically linked in one dimension by 2-phenyl-benzimidadole (2-PBImi) organic ligands. The two Zn(2+) ions defining the dimetal cluster are crystallographically independent, but display very similar coordination modes and tetra-hedral geometry. As such, each Zn(2+) ion is coordinated on one side by the N-donor imidazole linker, while the other three available coordination sites are fully occupied by the O atoms from the capping dimethyl-carbamates. The chirality of the chain extends along the c axis, generating a rather long 52.470?(11)?Å cell axis. Inter-estingly, the chiral material crystallizes from completely achiral precursors. A twofold axis and 3(1) screw axis serve to generate the long asymmetric unit.

SUBMITTER: Rodriguez MA 

PROVIDER: S-EPMC3254325 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature