Nitrogen analogues of Chichibabin's and Muller's hydrocarbons with small singlet-triplet energy gaps

摘要

Nitrogen analogues of Chichibabin's and Muller's hydrocarbons, DPh-D and TPh-D, based on 1,2,4-benzotriazinyl (Blatter) were studied. The two diradicaloids with good chemical and thermal stability exhibit smaller singlet-triplet energy gaps (Delta ES-T from -1.05 to -1.27 kcal mol(-1)) than the hydrocarbon diradicaloids with the same bridges.

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