Metal Complexes of Sulfur Ylides: Coordination Chemsistry, Preparative Organic Chemistry, and Biochemistry

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In recent years both acyclic and cyclic sulfur ylides have proved to be interesting and versatile ligands in preparative organometallic chemistry. In addition to paralleling the coordination chemistry of their phosphorus analogues, sulfur ylide complexes show specific structural and chemical features; they are becoming more important in preparative inorganic and organic chemistry, and may also be biochemically relevant as methylene transfer agents. Recent studies of the complexes of the ylidic λ 4 ‐thiabenzenes and λ 6 ‐thiabenzene 1‐oxides have frequently demonstrated unexpected and novel reactions, and thereby enriched the chemistry both of ylides and of carbonylmetals.