Preparation and configurational isomerism of ditertiary stibine sulfides, (C 6H 5)(CH 3)(S)SbCH 2Sb(CH 3)(C 6H 5) and [(C 6H 5)(CH 3)(S)Sb] 2(CH 2) 3

Abstract

Asymmetric ditertiary stibine sulfides (C 6H 5)(CH 3)(S)SbCH 2Sb(CH 3)(C 6H 5) and [(C 6H 5)(CH 3)(S)Sb] 2(CH 2) 3 have been prepared. It was found that they exist as only one of two possible diastereomers in the crystalline state. However, isomerization to the other form takes place in solution, resulting in an equilibrium mixture. A possibility of configurational lability of tertiary stibine sulfide was suggested for the first time.