胺铜或镍配离子的TCNQ电荷转移盐的合成和物理性质

Synthesis and Physical Properties of TCNQ Charge -Transfer Salts of Amine Copper or Nickel Complex Cations

合成了七个胺铜或镍配离子的TCNQ电荷转移盐[ML_2][TCNQ]_n(TCNQ=7,7,8,8-四氰基对苯二醌二甲烷;n=2,3;M=Cu,Ni;L=tn,pn,dien,dmtade).通过元素分析、红外光谱、电子光谱、顺磁共振谱、光电子能谱、磁化率和电导率对这些电荷转移盐进行了表征.结果表明,这些电荷转移盐分子中存在TCNQ^0,和TCNQ^-旦TCNQ^0与TCNQ^-之间存在相互作用,部分电荷从[TCNQ]_n^2向[ML_2」^(2+)转移,导致化合物中的金属表现为混合价态.七个样品的室温电导率在10^(-5)～10^(-10)S·cm^(-1),属于有机半导体,其导电性主要归结为一维TCNQ分子柱的形成.

Seven TCNQ charge - transfer salts of amine copper or nickel complex cations, [ML2] [TCNQ]n(TCNQ=7,7,8,8-tetracyanoquinodimethane; n = 2,3;M=Cu,Ni;L=tn,pn,dien, dmtade) ,have been synthesized. These charge - transfer salts have been characterized by elemental analysis, infrared spectrum, electronic spectrum, electron paramagnetic resonance spectrum, XPS, susceptibility and conductivity. The results indicate that there are TCNQ0 and TCNQ- in the molecules of these charge - transfer salts as well as interaction between TCNQ0 and TCNQ- . The metals of these compounds show mixed valence state because partial charges transfer from [TCNQ]n2- to [ML2]2+. Room temperature conductivities of the seven samples are in 10-5-10-10S·cm-1, therefore they belong to organic semiconductor. Their conductivities are mainly attributed to the formation of TCNQ molecular column of one dimension.