1991 Volume 20 Issue 1 Pages 69-72
A ferrocene derivative carrying a nitronyl-nitroxide radical was synthesized and its CT salt with DDQ was prepared. There are two S = 1/2 spins, ferrocenium ion and nitronyl-nitroxide radical, on the cationic part of the CT-salt. From the temperature dependence of magnetic susceptibility data it is concluded that the interaction between them is antiferromagnetic (2J ≈ −50 cm−1).
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