The reactivity of cyclo-(P5tBu4)− towards group 13, 14 and 15 metal chlorides: complexation and formation of cyclooligophosphanes, {cyclo-(P5tBu4)}2 and {cyclo-(P4tBu3)PtBu}2, by reductive elimination

Abstract

[Na(THF)₄][cyclo-(P₅^tBu₄)] (1) reacts with Et₂AlCl and GeCl₄ to give Et₂Al{cyclo-(P₅^tBu₄)}(THF) (2) and, in low yield, GeCl₃{cyclo-(P₅^tBu₄)}, respectively, while the reaction of 1 with SnCl₂, PbCl₂ or BiCl₃ results in the formation of the structural isomers {cyclo-(P₅^tBu₄)}₂ (3) and {cyclo-(P₄^tBu₃)P^tBu}₂ (4) (besides other cyclic phosphanes) and elemental metal.