Tris(μ2-2-methoxy-6-{[(2-sulfidoethyl)imino]methyl}phenolato)trinickel(II) dimethylformamide monosolvate: crystal structure, spectroscopic characterization and antibacterial activity

Abstract

The title trinuclear nickel(II) complex, [Ni3(C10H11NO2S)3]·C3H7NO, with a Schiff base ligand formed in situ from 2-aminoethanethiol and o-vanillin crystallizes in the orthorhombic space group Pbca. Its asymmetric unit consists of one neutral Ni3 L 3 molecule and one DMF solvent molecule. The solid-state organization of the complex can be described as an insertion of the solvent molecules within the crystallographically independent trinuclear NiII species. Several C—H...π edge-to-face interactions and π–π stacking interactions link the components in the crystal. A first example of a short intermolecular C—H...Ni contact is found. Antibacterial in vitro screening revealed that the title compound has antibacterial activity, the best effect being against Acinetobacter baumannii.