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    题名: Synthetic conducting materials XI. Dinuclear copper chelates with 3,6-bis(2-pyridyl)-4-cyano- pyridazine ligand as a donor to TCNQ
    其它题名: 雙核銅錯合物與TCNQ的電核轉移鹽
    作者: 王文竹;Wang, Wen-jwu;Wang, Shian-Show
    贡献者: 淡江大學化學學系
    日期: 1993-03-29
    上传时间: 2009-12-01
    出版者: Elsevier
    摘要: Dinuclear copper chelates containing 3,6-bis(2-pyridyl)-4-cyano-pyridazine(PCPA) ligand have been synthesized where copper is either in Cu(I) or Cu(II) state. Metatheses between the dinuclear copper chelates and LiTCNQ (or Et3NH(TCNQ)2) yielded black needle-like charge transfer complexes in the form of Cu2(PCPA)2(TCNQ)I and Cu2(PCPA)2(TCNQ)2I2. These complexes have been characterized by elemental analysis, infrared and electronic spectroscopy. The degree of charge transfer was estimated by external C=C stretching, CN stretching, and CH bending frequency in these complexes. Magnetic susceptibility measurement and electron paramagnetic resonance spectroscopy were employed to investigate the physical properties of electrons in the solid state crystals. The EPR results show that Cu2(PCPA)2(TCNQ)I has g=2.004 value with peak-to-peak width Hpp=5 gauss and unchanged from 300 to 77K The Cu2(PCPA)2(TCNQ)2I2 has g=2.003 value and Hpp=14 gauss at 278K which broadened to 20 gauss at 77K.The variable temperature electric conductivity measurement show that the conductivities were 5.6x10−5 and 2.7x10−5 Scm−1 for Cu2(PCPA)2(TCNQ)I and Cu2(PCPA)2(TCNQ)2I2, respectively, at 300K, and the activation energies were 0.17 eV for the former and 0.18 eV for the later.
    關聯: Synthetic metals 56(1), pp.1950-1955
    DOI: 10.1016/0379-6779(93)90353-X
    显示于类别:[化學學系暨研究所] 期刊論文

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