Gold and silver complexes with the diselenium ligand [Ph2P(Se)NP(Se)Ph-2](-)

摘要

The treatment of potassium diselenoimidodiphosphinato with silver(I) or gold(III) derivatives leads to the synthesis of three-coordinated. [Ag {(SePPh2)(2)N}, (PPh3)], tetranuclear, [Ag-4{(SePPh2)(2)N}(3)]OTf (4) (OTf = OSO2CF3), or square-planar, [Au(C6F5)(2){(SePPh2)(2)N}] (5), complexes. The crystal structures of [Au-2{(SePPh2)(2)N}(PPh3)(2)]OTf (2), 4 and 5 have been established by X-ray diffraction. Complex 2 is associated by gold-gold interactions formin tetranuclear dimers. In complex 4 four silver atoms forming a distorted tetrahedron are bridged by three ligands, and 5 shows the expected square-planar coordination at gold. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 42]