Reversible Carbon-Carbon Bond Breaking and Spin Equilibria in Bis(pyrimidinenorcorrole)
作者:Bin Liu、Takuya Yoshida、Xiaofang Li、Marcin Stępień、Hiroshi Shinokubo、Piotr J. Chmielewski
DOI:10.1002/anie.201607237
日期:2016.10.10
Reversible homolytic dissociation of the bis(pyrimidinenorcorrole) σ‐dimer was elucidated by means of variable temperature ESR and 1H NMR spectroscopy, mass spectrometry, and optical spectrocopy. Dehydrogenation of the σ‐dimer yielded another dimer displaying a singlet–triplet equilibrium in solution, strong NIR absorption (1570 nm), and a narrow electrochemical HOMO–LUMO gap (0.74 V).
通过可变温度ESR和1 H NMR光谱,质谱和光学光谱阐明了双(嘧啶-甲硼烷基)σ-二聚体的可逆均质解离。σ-二聚体的脱氢产生了另一个二聚体,在溶液中显示出单重态-三重态平衡,近红外吸收强(1570 nm)和狭窄的HOMO-LUMO电化学间隙(0.74 V)。