Magnetic Properties of CT Complexes between 2,2″,5,5″-Tetrakis(dimethylamino)terphenyls and TCNQF<sub>4</sub>
作者:Yosuke Nakamura、Hiizu Iwamura
DOI:10.1246/bcsj.66.3724
日期:1993.12
2,2″,5,5″-Tetrakis(dimethylamino)-p- and m-terphenyls (1 and 2), in which two N,N,N′,N′-tetramethyl-p-phenylenediamine (TMPD) moieties are linked through p- and m-phenylene units, respectively, were synthesized, and their CT complexes with TCNQF4 were prepared. In the complexes, 1 and 2 possess two S = 1/2 spins per molecule. The intramolecular interaction between the spins of the two TMPD moieties was found to be antiferromagnetic (2J/k = −42 K) in 1, and ferromagnetic (2J/k = 240 K) in 2.
合成了 2,2″,5,5″-四(二甲基氨基)-对和间三联苯(1 和 2),其中两个 N,N,N′,N′-四甲基对苯二胺(TMPD)分子分别通过对和间三联苯单元连接,并制备了它们与 TCNQF4 的 CT 复合物。在复合物中,1 和 2 每个分子具有两个 S = 1/2 自旋。在 1 中,两个 TMPD 分子的自旋之间的分子内相互作用是反铁磁性的(2J/k = -42 K),而在 2 中则是铁磁性的(2J/k = 240 K)。