ESR Study of 1,3-Phenylenebis(5-tert-Butyl-3-Phenyl-2-Phenylnitrene)
- 1 September 1999
- journal article
- research article
- Published by Taylor & Francis in Molecular Crystals and Liquid Crystals
- Vol. 334 (1), 41-48
- https://doi.org/10.1080/10587259908023301
Abstract
1,3-Phenylenebis(5-tert-butyl-3-phenyl-2-phenylnitrene) ( m-4 ) was generated by photolysis of the corresponding precursor diazide m-3 in 2-MTHF at 3 K with a high-pressure Xe lamp, and its ESR spectrum was measured. The observed ESR spectrum was analyzed by computer simulation based on the eigenfield / exact diagonalization hybrid method to give two sets of zfs parameters: |D| = 0.323 cm−1 and |E| = 0.016 cm−1; |D| = 0.340 cm−1 and |E|=0.011 cm−1. The temperature dependence of ESR signal intensity of m-4 in the temperature region of 3–70 K was a linear relationship in the intensity vs reciprocal temperature plot, indicating that m-4 is in a quintet ground state.Keywords
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