Abstract
The synthesis, X-ray structure and properties of a pentanuclear cobalt(III) coordination cluster [{L(O2CCH3)Co2O(OCH3)2}2Co](ClO4)3 (1) (L− = 2,6-bis((3-aminopropylimino)methyl)-4-methylphenolate) are described. The dinucleating L− is coordinated with two cobalt(III) centers to form the {L(O2CCH3)Co2O(OCH3)2} unit, where each metal center is in a distorted octahedral N2O4 environment. The oxo and the methoxo ligands of these two dinuclear units assemble a distorted octahedral O6 coordination sphere around the central cobalt(III). Elemental analysis and spectroscopic (IR, NMR, UV–vis, and HRMS) features are consistent with the pentanuclear structure of the complex. The diamagnetic complex is a 1 : 3 electrolyte in solution. It is redox-active and displays a metal-centered reduction at E1/2 = −0.04 V (vs. Ag/AgCl).
Acknowledgements
S. Maloth and S.K. Kurapati thank the Council of Scientific and Industrial Research for research fellowships.