First Copper(I) and Silver(I) Complexes Containing Phosphanylphosphido Ligands

摘要

Three new complexes with phosphanylphosphido ligands, [Cu-4{mu(2)-P(SiMe3)-PtBu}(4)] (1), [Ag-4{mu(2)-P(SiMe3)-PtBu2}(4)] (2) and [Cu{eta(1)-P(SiMe3)-PiPr(2)}(2)](-)[Li(Diglyme)(2)](+) (3) were synthesized and structurally characterized by X-ray diffraction, NMR spectroscopy, and elemental analysis. Complexes 1 and 2 were obtained in the reactions of lithium derivative of diphosphane tBu(2)P-P(SiMe3)Li center dot 2.7THF with CuCl and [iBu(3)PAgCl](4), respectively. The X-ray diffraction analysis revealed that the complexes 1 and 2 present macrocyclic, tetrameric form with Cu4P4 and Ag4P4 core. Complex 3 was prepared in the reaction of CuCl with a different derivative of lithiated diphosphane iPr(2)P-P(SiMe3)Li center dot 2(Diglyme). Surprisingly, the X-ray analysis of 3 revealed that in this reaction instead of the tetramer the monomeric form, ionic complex [Cu{eta(1)-P(SiMe3)-PiPr(2)}(2)](-)[Li(Diglyme)(2)](+) was formed.