Cation Radical Salts with Flexible Polycyano Anions having Tetracyanoallyl Skeleton
作者:Shuichi Sekizaki、Akihiko Konsha、Hideki Yamochi、Gunzi Saito
DOI:10.1080/10587250210748
日期:2002.1.1
Cation radical salts of BEDO-TTF (BO) with six kinds of polycyano counter anions of tetracyanoallyl derivatives (R-TCA; R: substituent) were investigated. Although the stoichiometries of the salts are different from salt to salt, the degree of charge transfer on BO molecules ranges from +0.4 to +0,5. 2-propoxy-TCA anion (PrO-TCA − ) provides a semiconducting salt, while the other anions afford metallic
研究了 BEDO-TTF (BO) 与六种四氰基烯丙基衍生物(R-TCA;R:取代基)的多氰基抗衡阴离子的阳离子自由基盐。尽管盐的化学计量因盐而异,但 BO 分子上的电荷转移程度在 +0.4 到 +0.5 之间。2-丙氧基-TCA 阴离子 (PrO-TCA - ) 提供半导体盐,而其他阴离子提供金属盐。EtO-TCA - 盐分别在 150 K 和 40 K 附近出现连续的金属-半导体和半导体-金属过渡。该盐的磁化率在100 K附近略有下降,即使在1.9 K仍保持非零值。解决了三种盐的晶体结构。EtO-TCA - 和氰甲基(CM)-TCA - 的盐具有 BO 分子的 I 3 型填充基序。