Addition von Schwefeldioxid an Ruthenium-Thiolat-Komplexe, Struktur eines bemerkenswert stabilen Thiolat-SO2-Addukts [1]/ Addition of Sulfur Dioxide to Ruthenium Thiolate Complexes, Structure of a Remarkably Stable Thiolate-SO2-Addukt [1]

Ruthenium thiolates [cpRu(PPh ),(SMe)] and [cp*Ru(PPh Me) (SR)] (R = Me, Ph) react with sulfur dioxide in two different ways, substitution of phosphine for SO , and addition of SO to the thiolate ligand. The structure of [cpRu(CO)(PPh )(SMe · SO )] was determined by X-ray crystallography: Crystals are monoclinic, space group P2 /n, a = 10.26(9), b = 16.00(6), c = 14.73(6) Å, β = 90.141(5)°, Ζ = 4. The most remarkable feature is a very long (247,8 pm) S—S single bond. [cp*Ru(PPh Me)(SO )(SPh)] and the corresponding sulfur monoxide complex [cp*Ru(PPh Me)(SO)(SPh)] undergo [3+2] cycloaddition with dimethylacetylene-dicarboxylate.