Synthesis and structural characterisation of the first tris(diacylpnictido)phosphines, P[E{C(O)R}_2]_3, E = P or As,R = Bu~t or Ph

摘要

The reactions of the 2-phospha-or 2-arsa-dionatolithium complexes. [Li(DME){eta~2-O, O-OC(R)EC(R)}], E = P or As, R = Bu~t or Ph, with PCl_3 have afforded the first examples or tris(diacylpnictido)phosphines, P[E{C(O)r}_2]_3, two of which have been structurally characterised.