Synthesis, crystal structure and antibacterial activity of a heterometallic tetranuclear Cd₂Tb₂ complex derived from 5-chloro-2-(3-ethoxy-2-hydroxybenzylideneamino)phenol

Abstract

A new heterometallic tetranuclear complex [Cd₂Tb₂L₄(CH₃COO)₂(DMF)₂] was prepared from the Schiff base 5-chloro-2-(3-ethoxy-2-hydroxybenzylideneamino)phenol (H₂L). The complex was characterized by IR and UV–vis spectra, as well as single crystal X-ray determination. The Cd atoms are in octahedral coordination with O₅N donor set, and the Tb atoms are in square-antiprismatic coordination with O₇N donor set. The Cd and Tb atoms are bridged by phenolate oxygen and acetate groups. The Schiff base and the complex showed good antibacterial activities against the bacteria Escherichia coli, Pseudomonas aeruginosa, and Salmonella typhi.

Keywords:

• Schiff base
• Cd-Tb complex
• heteronuclear complex
• crystal structure
• antibacterial activity

Disclosure statement

No potential conflict of interest was reported by the authors.

Supplementary data

CCDC 2006772 contains the supplementary crystallographic data for this paper. These 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]; or e-mail: [email protected].