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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/25327


    Title: Synthetic conducting materials XI. Dinuclear copper chelates with 3,6-bis(2-pyridyl)-4-cyano- pyridazine ligand as a donor to TCNQ
    Other Titles: 雙核銅錯合物與TCNQ的電核轉移鹽
    Authors: 王文竹;Wang, Wen-jwu;Wang, Shian-Show
    Contributors: 淡江大學化學學系
    Date: 1993-03-29
    Issue Date: 2009-12-01
    Publisher: Elsevier
    Abstract: 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.
    Relation: Synthetic metals 56(1), pp.1950-1955
    DOI: 10.1016/0379-6779(93)90353-X
    Appears in Collections:[Graduate Institute & Department of Chemistry] Journal Article

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