James P. Ward, Patrick J. Lim, David J. Evans, Jonathan M. White, Charles G. Young
The synthesis, properties, X-ray structures, and catalytic sulfur-atom-transfer (SAT) reactions of W2(μ-S)(μ-S2)(dtc)2(dped)2 [1; dtc = S2CNR2-, where R = Me, Et, iBu, and Bn; dped = S2C2Ph22-] and W2(μ-S)2(dtc)2(dped)2 (2) are reported. These complexes represent the oxidized (1) and reduced (2) forms of anaerobic SAT catalysts operating through the bidirectional, ligand-based half-reaction (μ-S)(μ-S2) ↔ (μ-S)2 + S0. The catalysts are deactivated in air through the formation of catalytically inactive oxo complexes, (dtc)WO(μ-S)(μ-dped)W(dtc)(dped) (3), prompting us to recommend that group 6 SAT activity be assessed under strictly anaerobic conditions. © 2020 American Chemical Society.
School of Chemistry, University of Melbourne, 3010, VIC, Australia; Department of Chemistry, University of San Carlos, Cebu City, Philippines; Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Melbourne, 3010, VIC, Australia; Department of Chemistry and Physics, La Trobe Institute of Molecular Sciences, La Trobe University, Melbourne, 3086, VIC, Australia
