CONTROL OF MAGNETIC-INTERACTIONS IN POLYARYLMETHYL TRIPLET DIRADICALS USING STERIC HINDRANCE

被引:84
作者
RAJCA, A
UTAMAPANYA, S
XU, JT
机构
[1] Department of Chemistry, Kansas State University, Manhattan
关键词
D O I
10.1021/ja00024a032
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Three polyarylmethyl triplet diradicals are prepared by oxidation of the corresponding carbodianions. Solid-state studies of the diradicals using SQUID show an onset of short-range ferromagnetic interactions at temperatures below 4 K for diradical 3(2.) and antifeffomagnetic interactions below 70 K for diradicals 2(2.) and 4(2.). The diradicals and the corresponding carbodianions in solution are characterized using ESR, NMR, and UV-vis spectroscopy, and voltammetry.
引用
收藏
页码:9235 / 9241
页数:7
相关论文
共 32 条