Christian Burschka, Markus Wieber

• The crystal structure of the title compound, recrystallized from ethanol, was solved by means of X-ray diffraction methods and could be refined to an R-value of 0.050 with 2126 reflections observed. In contrast to its behaviour in benzene solution, where the compound is monomerie, in the crystalline state dimerie units are formed by intermoleeular Bi-S-interactions. The bismuth atoms are coordinated in form of a slightly distorted pentagonal pyramid with the free electron pair presumably directed opposite the apical C-atom.