The first hydrides of a phosphorus sulfide cage: nuclear magnetic resonance evidence for α-tetraphosphorus trisulfide hydride compounds

Abstract

The hydrides α-P₄S₄(H)R (R = H, I, NMePh or SPh) have been prepared in solution by the reaction of α-P₄S₃I₂ or of the corresponding α-P₄S₃(I)R with SnBuⁿ₃H, and identified by ³¹P NMR spectroscopy. The compounds were unstable and not isolated. Ab initio molecular orbital calculations of geometry have been carried out for α-P₄S₃H₂, α-P₄S₃(NMe₂)₂ and α-P₄S₃H(NMe₂).