SCHEDULED MAINTENANCE
Low temperature laser irradiation of trans-diphosphene (1), followed using u.v., and 31P and 1H n.m.r. spectroscopy, gives an equilibrium between (1) and the unstable cis-isomer (2): the activation free energy of the (2)→(1) reaction is 20.3 kcal mol–1(1 kcal = 4.18 kJ).
A. Caminade, M. Verrier, C. Ades, N. Paillous and M. Koenig, J. Chem. Soc., Chem. Commun., 1984, 875 DOI: 10.1039/C39840000875
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