Zur Synthese von Tetramethyldibismutan und dessen Spaltung zu Bis(dimethylbismut)oxid oder -sulfid bzw. Phenyldimethylbismutan / A Synthesis of Tetramethyldibismuthane and its Cleavage to Bis(dimethylbismuth)oxide or Sulfide and Phenyldimethylbismuthane, Respectively

Abstract

Tetramethyldibismuthane, Me4Bi2 was prepared in high yields by reducing Me2BiBr with sodium in liquid ammonia. The compound reacts quantitatively with equimolar amounts of oxygen or sulfur to yield the corresponding (Me2Bi)2O and (Me2Bi)2S. By cleavage of Me4Bi2 with PhLi, PhBiMe2 was obtained ; the latter is also available in better yields by the reaction of Me2BiBr with PhLi.