Crystal structure and antimicrobial properties of a copper(II) complex with 1,10-phenanthroline and azide co-ligand

ABSTRACT

A novel Cu(II) complex with mixed ligands, [azido-bis(1,10-phenanthroline-κ²N,N′)copper(II)]nitrate hydrate has been synthesized and was characterized by physicochemical and spectroscopic methods. The central Cu(II) atom is five coordinate with four N atoms of two 1,10-phenanthroline molecules and one terminal N atom from an azide anion, giving a distorted trigonal bipyramidal geometry with a CuN₅ chromophore. The molecular structure of the compound is consolidated by H-bonding and face-to face π-π stacking between the aromatic rings of 1,10-phenanthroline ligand. The ligands, metal salt, and the complex were also evaluated for their antimicrobial activities in vitro.

KEYWORDS:

• Antimicrobial properties
• azide
• copper(II)
• 1,10-phenanthroline
• X-ray crystal structure

Acknowledgment

The authors thank the Laboratory of Phytobiochemical and Medicinal Plant Study, University of Yaounde I, for the antimicrobial tests.

Funding

AMO, DMY, and JN acknowledge the Government of Cameroon for financial support through the Fonds d'Appuis à la Recherche.