Sun, LZ; Wang, Y; Lin, S; Liu, JM; Li, ZF; Zhang, JW; Jin, QH
Three new copper(I) complexes, namely [Cu(DPEphos)(Biq)]CF3SO3 (1) and [Cu(PPh3)(2)(Biq)]CF3SO3 (2) and [Cu(PPh3)(2)(Biq)]ClO4(3) (DPEphos = bis [2-(diphenylphosp hino)phenyl]ether, PPh3 = triphenylphosphine and Biq = 2,2'-biquinoline), are synthesized and characterized by IR, H-1 NMR, P-31 NMR, fluorescence spectra and terahertz time-domain spectroscopy (THz-TDS). Complex 1 crystallizes in triclinic, space group P (1) over bar with a = 12.6997(5), b = 13.2813(5), c = 15.3593(6) angstrom, alpha = 80.211(3)degrees, beta= 88.752(3)degrees, gamma = 70.113(3)degrees, V = 2398.85(15) angstrom(3), C55H41.2CUF3N2O2,M-r = 1018.27, Z = 2, D-c = 1.410 g/cm(3), F(000) = 1048, mu = 0.628 mm(-1), the final R = 0.0450 and wR = 0.1105 for 9419 observed reflections (I > 2 sigma(I)). Complex 2 crystallizes in monoclinic, space group C2/c with a = 19.9961(7), b = 15.9774(5), c = 17.7908(6) angstrom, beta = 119.758(4)degrees, V = 4982.8(3) angstrom(3), C56.47H47.88CuF3N2O4.47P2S, Mr = 1040.54, Z = 4, D-c = 1.387 g/cm(3), F(000) = 2154, mu = 0.606 mm(-1), the final R = 0.0430 and wR = 0.1218 for 4897 observed reflections (I > 2 sigma(I)). Complex 3 crystallizes in monoclinic, space group C2/c with a = 19.7534(8), b = 15.0797(5), c = 17.8097(7) angstrom, beta = 116.400(5)degrees, V = 4751.8(3) angstrom(3), C-56 H(45)C1CuN(3)O(4)P(2), M-r= 984.88, Z = 4, D-c= 1.377 g/cm(3), F(000) = 2040, mu = 0.635 mm(-1), the final R = 0.0731 and wR = 0.2180 for 4670 observed reflections (I > 2 sigma(I)). In the emission spectra, shifts of emission peak are derived from ligand-centered (pi-pi*) transition.