Study on magnetic properties of triaminobenzenes toward charge-transfer organic ferromagnets

Summary form only given. We have shown that the ESR spectrum of the cationic triradical of TDAB in CH2Cl2 matrix agrees well with the theoretical prediction for a quartet (S = 3/2) molecule.1 Our ab initio MO calculatiom at the MJP2 perturbation level have also shown that the quartet state of the cationic triradical of 1,3,5 triaminobenzene lies 12 kcal/mol below the doublet states. In order to stabilize these cationic states, we prepared TDAAB and characterized its C1O/sub 4/Bf/sub 4/ and PF/sub 6/ 1:1 salts. A theoretical strategy to obtain this type of organic ferromagnets and results of ESR and static magnetic-susceptibility measurements of these charge-transfer solids are presented.