Synthesis of three d10 compounds based on N-(3-pyridylmethyl)benzimidazole, the effect of radius of metal ions on structure and the function of ligand

Zn2+, Cd2+ and Hg2+ complexes of L [L=N-(3-pyridylmethyl)benzimidazole] have been synthesized and characterized by single crystal X-ray analysis and fluorescence spectra as well as TGA analysis. The Zn2+ compound is monomeric, the Cd2+ complex is of double-bridge chain, while the Hg2+ complex is of wave-like chain. These compounds reveal the metal radius interaction on structural types and the function of ligand.