An electron spin resonance study of trivinylmethyl and hepta-2,6-dien-4-ynyl radicals
作者:John C. Walton
DOI:10.1039/p29830001043
日期:——
Trivinylmethyl radicals were generated by hydrogen abstraction from trivinylmethane and hepta-2,6-dien-4-ynyl radicals were produced by bromine abstraction from 1-bromohepta-2,6-dien-4-yne. The e.s.r. spectra of the radicals were obtained and the hyperfine splittings compared with computed spin densities. Methane-based stabilisation energies were computed for a variety of delocalised radicals by the
通过从三乙烯基甲烷中提取氢来产生三乙烯基甲基自由基,并且通过从1-溴庚基-2,6-二烯-4-炔中去除溴来产生七-2,6-二烯基-4-炔基。获得了自由基的esr光谱,并将超精细分裂与计算的自旋密度进行了比较。通过半经验UMNDO方法计算了各种离域自由基的甲烷基稳定能。已显示,随着稳定能的增加,离域自由基的氢超细裂变单调减少。