Tetrahedron letters

Zero-field splitting of quintet conjugated dinitrenes: 2, 6-biphenylenedinitrene

RS Kalgutkar, PM Lahti

Index: Kalgutkar, Rajdeep S.; Lahti, Paul M. Tetrahedron Letters, 2003 , vol. 44, # 13 p. 2625 - 2628

Full Text: HTML

Citation Number: 22

Abstract

2, 6-Diazidobiphenylene was synthesized and photolyzed in frozen matrix. The resulting electron spin resonance spectrum showed the formation of 2, 6-biphenylenedinitrene as a quintet species with zero field splitting (zfs) parameters∣ D/hc∣= 0.260±0.002 cm− 1,∣ E/hc∣≤ 0.0005 cm− 1. The zfs parameters are in excellent accord with dipolar models for a quintet state produced by interaction between triplet state nitrene sites.