S. Hayami, K. Inoue
Dec 1, 1999
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0
Influential Citations
36
Citations
Journal
Chemistry Letters
Abstract
1,3,5-tris{p-(N-oxy-N-tert-butylamino)phenyl}benzene (2) is known as a persistent triradical with a quartet ground state. A new triradical with a triazine skeleton was synthesized and characterized. The nitroxide triradical with triazine derivative 2,4,6-tris{p-(N-oxy-N-tert-butylamino)phenyl}-1,3,5-triazine (1) exhibited stronger intramolecular ferromagnetic interaction than that with benzene derivative 2, the magnitude of the interactions depending on the planarity of the structures and/or on the spin density of the center skeletons. The temperature dependence of the magnetic susceptibility values were observed for crystalline 1 in the range of 1.8-350 K. The simulation of an isosceles-triangular exchange coupling model gave 15.3 ± 0.8 K, γ = 0.77 ± 0.1.