Preparation of N, N, N′, N′-tetrakis-(2-benzimidazolylmethyl)-1,2-ethanediamine and crystal assemblies of the relative complexes

Shanling Tong, Yahong Wu, Zhaoyong Tian, Yan Yan
2012 Open Journal of Inorganic Chemistry  
N,N,N',N'-tetrakis-(2-benzimidazolylmethyl)-1,2-ethanediamine (TBIMEDA), was prepared by reaction of ethylenediamine tetra-acetic acid disodium salt (EDTA) with 1,2-diaminobenzene in a refluxed glycol solution, and furthermore, three allomeric complexes [(M II TBIMEDA) SO 4 ·5H 2 O, M = Cd, Co, Ni] were selfassembled by solvothermal method based on reaction of this ligand with the relative sulfates respectively. These allomeric complexes were characterized by elemental analysis and IR
more » ... is and IR spectroscopy and their crystal structures were determined by single crystal X-ray structural analysis. In the crystal architecture of these complexes, every metal(II) ion is chelated by one neutral TBIMEDA ligand to form an octahedral core with configuration of five heterocyclic rings (fivemember ring). These cores then were linked together by multi hydrogen bond interactions with sulfate ions and water molecules to construct their 3D crystal architectures.
doi:10.4236/ojic.2012.24011 fatcat:6m7gtratfrclzpslnqz7mkttfq