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, Me 4 Bi 2 was prepared in high yields by reducing Me 2 BiBr with sodium in liquid ammonia. The compound reacts quantitatively with equimolar amounts of oxygen or sulfur to yield the corresponding (Me 2 Bi) 2 O and (Me 2 Bi) 2 S. By cleavage of Me 4 Bi 2 with PhLi, PhBiMe 2 was obtained ; the latter is also available in better yields by the reaction of Me 2 BiBr with PhLi.