31136-21-7Relevant articles and documents
FROZEN-IN NON-EQUILIBRIUM ROTAMER MIXTURES IN 1,2-DIARYLETHYLENES OBTAINED BY LOW-TEMPERATURE IRRADIATION
Castel, Nelly,Fischer, Ernst
, p. 159 - 166 (1985)
trans-1,2-Di(2-naphthyl)-ethylene, formed in rigid media by UV irradiation of its cis isomer, comprises a mixture of three modifications, not in equilibrium with each other, that are tentatively assigned to the three possible rotamers.At somewhat lower viscosities, in the range 108-109 cP, equilibrium is established.Detection is by emission-spectroscopic methods.Three other related compounds showed only slight effects of the same kind.