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Synthesis, Crystal Structure, and Characterization of Two Novel Five‐coordinate Zinc(II) Complexes with the Tripod Ligand Tris( N ‐methylbenzimidazol‐2‐yl‐methyl)amine and α, β ‐unsaturated Carboxylates
Author(s) -
Wu Huilu,
Sun Tao,
Li Ke,
Xu Yuhao,
Yun Ruirui,
Sun Qingyu
Publication year - 2009
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200800346
Subject(s) - chemistry , trigonal bipyramidal molecular geometry , tripod (photography) , zinc , ligand (biochemistry) , amine gas treating , carboxylate , crystal structure , tris , crystallography , molecule , medicinal chemistry , stereochemistry , organic chemistry , biochemistry , physics , receptor , optics
Two novel five‐coordinate zinc(II) complexes with the tripod ligand tris( N ‐methylbenzimidazol‐2‐ylmethyl)amine (Mentb) and two different α, β ‐unsaturated carboxylates, with the composition [Zn(Mentb)(acrylate)] (ClO 4 )·DMF·1.5CH 3 OH ( 1 ) and [Zn(Mentb)(cinnamate)](ClO 4 )·2DMF·0.5CH 3 OH ( 2 ), were synthesized and characterized by means of elemental analyses, electrical conductivity measurements, IR, UV, and 1 H NMR spectra. The crystal structure of two complexes have been determined by a single‐crystal X‐ray diffraction method, and show that the Zn II atom is bonded to a Mentb ligand and a α, β ‐unsaturated carboxylate molecule through four N atoms and one O atom, resulting in a distorted trigonal‐bipyramidal coordination [ τ ( 1 ) = 0.853, τ ( 2 ) = 0.855], with approximate C 3 symmetry.