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The vinylidenebis(diphenylphosphine) (vdpp) reacts with CuBr to give a tetranuclear complex, [Cu4(μ3-Br)2(μ2-Br)2(μ2-vdpp)2(CH3CN)2]·(CH3CN)2 1. The title complex has crystallo-graphically imposed centrosymmetry and presents a Cu4Br4 core with distorted stair-like structure. All copper(Ⅰ) atoms in 1 assume distorted tetrahedral coordination geometry. The distance of 2.7745(11) between the two copper centers indicates the presence of ligand-supported Cu···Cu interactions. Crystal data for 1: C60H56Br4Cu4N4P4, Mr = 1530.77, triclinic, space group P1, a = 11.6593(9), b = 11.7181(9), c = 13.8711(11), α = 110.1020(10), β = 102.0050(10), γ = 109.8040(10)°, V = 1557.5(2)3, Z = 1, Dc = 1.632 g/cm3, F(000) = 760, λ = 0.71073 , T = 298(2) K, 2θmax = 50.04°, μ = 4.056 mm-1, S = 1.181, R = 0.0507 and wR = 0.1025.
The vinylidenebis (diphenylphosphine) (vdpp) reacts with CuBr to give a tetranuclear complex, [Cu4 (μ3-Br) 2 (μ2-Br) 2 (μ2-vdpp) 2 (CH3CN) 2] title complex has crystallo-graphically imposed centrosymmetry and presents a Cu4Br4 core with distorted stair-like structure. All copper (Ⅰ) atoms in 1 assume distorted tetrahedral coordination geometry. The distance of 2.7745 (11) between the two copper centers indicates the presence of of ligand-supported Cu ··· Cu interactions. Crystal data for 1: C60H56Br4Cu4N4P4, Mr = 1530.77, triclinic, space group P1, a = 11.6593 (9), b = 11.7181 (9), c = 13.8711 (11) α = 110.1020 (10) β = 102.0050 (10) γ = 109.8040 (10) ° V = 1557.5 (2) 3 Z = 1 Dc = 1.632 g / cm3 F = 0.71073 , T = 298 (2) K, 2θmax = 50.04 °, μ = 4.056 mm-1, S = 1.181, R = 0.0507 and wR = 0.1025.