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Nitrogen Analogues of Thiele’s Hydrocarbon
Author(s) -
Su Yuanting,
Wang Xingyong,
Li Yuantao,
Song You,
Sui Yunxia,
Wang Xinping
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201410256
Subject(s) - diradical , chemistry , hydrocarbon , moiety , singlet state , computational chemistry , excited state , triplet state , photochemistry , molecule , organic chemistry , atomic physics , physics
A series of bis[ N , N ‐di‐(4‐methoxylphenyl)amino]arene dications 1 2+ – 3 2+ have been synthesized and characterized. Their electronic structures were investigated by various experiments assisted by theoretical calculations. It was found that they are singlets in the ground state and that their diradical character is dependent on the bridging moiety. 3 2+ has a smaller singlet–triplet energy gap and its excited triplet state is thermally readily accessible. The work provides a nitrogen analogue of Thiele’s hydrocarbon with considerable diradical character.