Synthesis and Structure of Thiolate-Bridged Diiron and Dicobalt Complexes Supported by Modified β-Diketiminate Ligands

Multinuclear metal thiolate complexes represent an important class of organometallic compound owing to their capacity that they can not only serve as bio-mimicking functional platform but can also play as excellent cooperative catalysts. In this context, it is of long-standing interest to construct new-type transition metal complexes featuring sulfur donors. Herein we describe a synthetic method toward a novel unsymmetric beta-diketiminate ligand containing a thioether tether in a gram-scale. This sulfur functionalized beta-diketiminate ligand was proved to be an ideal structural skeleton for coordination and stabilization of relatively unstable Fe-II and Co-II ions to generate new thiolate-bridged bimetallic complexes. These new complexes have been well-defined by various spectroscopic characterizations and single-crystal X-ray diffraction analysis.

Automated summary

Multinuclear metal thiolate complexes are important organometallic compounds that can serve as bio-mimicking functional platforms and excellent cooperative catalysts. By synthesizing new sulfur-containing ligands, unstable metal ions can be stabilized to generate new thiolate-bridged bimetallic complexes.