A linear S-bridged trinuclear cobalt(III) complex with 2-aminobenzenethiol: synthesis, crystal structure, and spectroscopic characterization

Abstract

Treatment of cobalt(II) perchlorate hexahydrate with 2 M equiv. of 2-aminobenzenethiol (Habt) in acetonitrile afforded a tricationic tricobalt complex, [Co{Co(abt)₃}₂](ClO₄)₃·2CH₃CN, by aerial oxidation. The molecular structure of the meso (ΔΛ) form of the complex was determined by X-ray crystallography. In the complex cation, the central Co is coordinated by six thiolate groups from two terminal fac(S)-[Co(abt)₃] units in an octahedral geometry, forming a linear S-bridged tricobalt structure.

Keywords:

• Trinuclear S-bridged linear Co(III) complex
• 2-Aminobenzenethiol
• Crystal structure of the meso isomer
• Spectral properties

Acknowledgments

A.P. acknowledges support from the University Grants Commission, India (Sanction No. PSW-173/11-12). D.M.E. acknowledges support from the National Center for Research Resources – NIH COBRE Award P20 RR017708.