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Synthesis, Characterization and Luminescent Properties of Two Copper(Ⅰ) Complexes Based on 2,2?-Biquinoline and Phosphorous Ligand

孙凌志  王宇  林森  刘建明  李中峰  张江威  金琼花  
【摘要】:Three new copper(Ⅰ) complexes, namely [Cu(DPEphos)(Biq)]CF_3SO_3(1) and [Cu(PPh_3)_2(Biq)]CF_3SO_3(2) and [Cu(PPh_3)_2(Biq)]ClO_4(3)(DPEphos = bis[2-(diphenylphosp hino)phenyl]ether, PPh_3 = triphenylphosphine and Biq = 2,2?-biquinoline), are synthesized and characterized by IR, ~1H NMR, ~(31) P NMR, fluorescence spectra and terahertz time-domain spectroscopy(THz-TDS). Complex 1 crystallizes in triclinic, space group P1 with a = 12.6997(5), b = 13.2813(5), c = 15.3593(6) ?, α = 80.211(3)°, β = 88.752(3)°, γ = 70.113(3)°, V = 2398.85(15) ?~3, C_(55)H_(41.2)CuF_3N_2O_(4.6)P_2S, Mr = 1018.27, Z = 2, Dc = 1.410 g/cm3, F(000) = 1048, μ = 0.628 mm-1, the final R = 0.0450 and w R = 0.1105 for 9419 observed reflections(I 2σ(I)). Complex 2 crystallizes in monoclinic, space group C2/c with a = 19.9961(7), b = 15.9774(5), c = 17.7908(6) ?, β = 119.758(4)°, V = 4982.8(3) ?~3, C_(56.47)H_(47.88)CuF_3N_2O_(4.47)P_2S, Mr = 1040.54, Z = 4, Dc = 1.387 g/cm~3, F(000) = 2154, μ = 0.606 mm-1, the final R = 0.0430 and w R = 0.1218 for 4897 observed reflections(I 2σ(I)). Complex 3 crystallizes in monoclinic, space group C2/c with a = 19.7534(8), b = 15.0797(5), c = 17.8097(7) ?, β = 116.400(5)°, V = 4751.8(3) ?~3, C_(56)H_(45)ClCuN_3O_4P_2, Mr = 984.88, Z = 4, Dc = 1.377 g/cm~3, F(000) = 2040, μ = 0.635 mm-1, the final R = 0.0731 and w R = 0.2180 for 4670 observed reflections(I 2σ(I)). In the emission spectra, shifts of emission peak are derived from ligand-centered(π-π*) transition.

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