Synthesis, Crystal Structure, and Properties of a Tetranuclear Zn(II) Complex Based on 2-(1H-imidazole-1-ylmethyl)-1H-benzimidazole

Abstract

A new complex with the formula {[Zn(L)₃](NO₃)·H₂O}₄ (1) has been obtained through the self-assembly of a flexible N-heterocyclic ligand 2-(1H-imidazole-1-ylmethyl)-1H-benzimidazole (L) with Zn(NO₃)₂·6H₂O at 80 °C. In complex 1, four adjacent Zn(II) ions are joined together by four bidentate bridging ligands in trans-conformation to form a tetranuclear unit, featuring a (Zn–N–N–)₄ ring on the ab plane. The Zn₄L₁₂ units are interconnected by classical hydrogen-bonding interactions (N–H···N) to lead to 1D channels in the c-direction. Additionally, the fluorescent property and thermogravimetric analysis of complex 1 also have been investigated.

Keywords:

• crystal structure
• fluorescent property
• thermogravimetric analysis
• zinc complex

SUPPLEMENTARY MATERIALS

Crystallographic data reported in this paper have been deposited with the Cambridge Crystallographic Data Center as supplementary publication. CCD number is 851898. This data can be obtained free of charge via http://www.ccdc.cam.ac.uk/conts/retrieving.html (or from the Cambridge Crystallographic Data Centre, 12, Union Road, Cambridge CB2 1EZ, UK; fax: [phone]).

The authors gratefully acknowledge the financial support by the National Natural Science Foundation of China (No. J1210060).