REACTIONS OF THE HEXAFLUOROTHIOACETONE DIMER WITH CYANIDES OF PHOSPHORUS, ARSENIC AND GERMANIUM

Cyanides such as P(CN)₃ , As(CN)₃ , PhP(CN)₂ , BuᵗAs(CN)₂ and Ge(CN)₄ react with [(CF₃)₂CS]₂ (1) by insertion of the carbon atom of the iso-nitrile isomer into the four-membered [CS]₂ ring to give compounds PR′₃ (2), AsR′₃ (3), FP(S)R′₂ (4), PhP(S)R′2 (5), BuᵗAsR′₂ (6) and GeR′₄ (7) respectively, where R′ is the novel heterocyclic ligand[xxx]. The crystal structures of 3 and 7 are reported.