Synthesis and Structure of Di［bis（diphenylphosphino）ethane］ Copper（Ⅱ） Dinitrate

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Synthesis and Structure of Di[bis(diphenylphosphino)ethane] Copper(Ⅱ) Dinitrate

The complexCu (dppe)2](NO3)2 was prepared by the reaction of copper(Ⅱ) nitrate with bis(diphenylphosphino) ethane(dppe) in methanol and its crystal structure was determined by X-ray diffraction.The structure was solved by direct methods and refined by block-diagonal and full-matrix least-squares methods to a final R of 0.043 for 4085 independent reflections of I>3σ(I).The crystal is monoclinic, space group P21/n,Mr=984.41 with cell parameters a=12.896(2),b=22.250(4),c=17.512(5)A,β=101.6(3)°, V=4922.3 A3,Z=4,Dc=1.590 g/cm3,F(000)=1900,μ=10.573 cm-1. In this complex, C52H48CuN2O6P4, dppe functions as a bidentate chelate ligand. The four phosphorus atoms from two dppe are coordinated to the distorted tetrahedral copper.