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首页> 外文会议>International conference on rare earth development and application;ICRE'2001 >Synthesis, Characterization and Electrical Conductivity of Mixed-ligand 7, 7, 8, 8-Tetracyanoquinodimethane and 1, 10- Phenanthroline Complexes of Lanthanide Perchlorate
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Synthesis, Characterization and Electrical Conductivity of Mixed-ligand 7, 7, 8, 8-Tetracyanoquinodimethane and 1, 10- Phenanthroline Complexes of Lanthanide Perchlorate

机译：高氯酸镧系元素配体7、7、7、8、8-四氟喹啉二甲烷和1，10-菲咯啉配合物的合成，表征和电导率

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In order to investigate the coordination properties and conductivity of TCNQ ligand with lanthanide elements and the influence of the constitutive and valence property of metal center and the oxidation state of TCNQ to the conductivity of the complexes, a series of complexes including 7, 7, 8, 8-tetracyanoquinodimethane (TCNQ~0) of lanthanide perchlorates with TCNQ~- and 1, 10-phenanthroline (phen) of the formula [(phen)_3RE(TCNQ)_2~- (TCNQ)_2~- RE(phen)_3] (TCNQ~- )_3 (CIO_4~- ). nH_2O (RE= La, Ce, Eu, Tb, n = 1) are prepared in ethanol. And they have been characterized by elemental analysis, IR spectra, electronic spectra, thermal analysis and molar conductivity. The electrical conductivity of these complexes has been determined by the two probe technique at room temperature. At room temperature, all four compounds behave virtually as semiconductors (σ300k= 10~(-2) - 10~(-3)Som~(-1)). Comparing the conductivity of these complexes with that of transition metals, a conclusion has been supposed: the conductivity of this kind of complexes is influenced by the oxidation state of TCNQ and the valence property of metal center. Our experimental results showed that the conductivity of the complexes including TCNQ~0 is higher than that of the complex only including TCNQ~- and the valence property of metal center might be the most important factor to the conductivity.
机译：为了研究TCNQ配体与镧系元素的配位性能和电导率以及金属中心的本构和化合价和TCNQ的氧化态对配合物电导率的影响，研究了一系列配合物，包括7、7、8 ，具有TCNQ〜-的高氯酸镧盐的8-四氰基喹二甲烷（TCNQ〜0）和式[[phen] _3RE（TCNQ）_2〜-（TCNQ）_2〜-RE（phen）_3的1，10-菲咯啉（phen） ]（TCNQ〜-）_3（CIO_4〜-）。在乙醇中制备nH_2O（RE = La，Ce，Eu，Tb，n = 1）。并通过元素分析，红外光谱，电子光谱，热分析和摩尔电导率对其进行了表征。这些配合物的电导率已通过室温下的两种探针技术确定。在室温下，所有四种化合物实际上表现为半导体（σ300k= 10〜（-2）-10〜（-3）Som〜（-1））。将这些配合物的电导率与过渡金属的电导率进行比较，可以得出结论：这类配合物的电导率受TCNQ的氧化态和金属中心价态的影响。我们的实验结果表明，含TCNQ〜0的配合物的电导率高于仅含TCNQ〜-的配合物，并且金属中心的价态性质可能是影响电导率的最重要因素。

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