F. Kanno, K. Inoue, N. Koga
Feb 1, 1993
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0
Influential Citations
75
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Quality indicators
Journal
Journal of the American Chemical Society
Abstract
4,6-Dimethoxy-1,3-phenylenebis (N-tert-butyl nitroxide) (1) was prepared by lithiation of the corresponding dibromo compound followed by reaction with 2-methyl-2-nitrosopropane and subsequent treatment with Ag 2 O. In a frozen toluene matrix, 1 showed EPR fine structures characteristic of triplet dinitroxides: g=2.0068, D/hc=0.0179 cm -1 , and E/hc=0.0008 cm -1 . The variation in signal intensity vs reciprocal temperature deviated downward from a Curie relationship at temperatures lower than 45 K, suggesting a singlet ground states for 1