The First Dinuclear Nickel(II) Thiosulfate Obtained From Oxidation of Tri‐ tert ‐butoxysilanethiol. Contributions to the Chemistry of Silicon‐Sulfur Compounds No. 78 [1]

The title complex, neutral {[Ni 2 (μ‐S 2 O 3 ) 2 (C 7 H 9 N) 4 H 2 O]C 7 H 8 } ( 1 ), presents a dinuclear structure with the thiosulfate group acting as a (S, O) chelate and simultaneously as a (S) bridge. The molecular structure was determined by X‐ray crystallography. Complex 1 crystallizes as a hydrogen‐bonded dimer with molecule of toluene solvent in the unit cell. The environment of both central nickel atoms is octahedral with NiN 2 O 2 S 2 cores. This is the first metal thiosulfate complex isolated as a product of the oxidation of silanethiol. A mechanism of the reaction involving the formation of ( R O) 3 SiSSSi(O R ) 3 intermediate is proposed with the subsequent cleavage of Si–S bond.