Synthesis and Crystal Structure of a Dinuclear Compound Cu2（O=PPh2）2N2（μ-O2PPh2）2

摘要

cqvip:A neutral dinuclear compound Cu2[(O=PPh2)2N]2(μ-O2PPh2)2 has been unexpec- tedly prepared from the reaction of [Cu2(dppa)2(MeCN)4](ClO4)2 (dppa = bis(diphenylphosphino)- amine) and Sn(edt)2 (edt = ethane-1,2-dithiolate) in dichloromethane in air. ESR spectrum shows that the original Cu+ ion has been oxidized. The crystal structure determined by an X-ray single diffrac- tometer displays that the concurrence of the redox and hydrolysis of the origin ligand dppa is taken with the formation of two new ligands. The complex crystallizes in triclinic, space group P1 with a = 9.4269(13), b = 10.7522(13), c = 16.787(2) ’, α = 92.042(5), β = 104.591(7), γ = 96.167(6)°, V = 1633.6(4) ’3, C72H60 Cu2N2O8P6, Mr = 1394.12, Z = 1, Dc = 1.419 g/cm3, F(000) = 718, μ = 0.856 mm–1, the final R = 0.0530 and wR = 0.1096 for 4210 observed reflections with I > 2σ(I).