Quantum yields of the mercury photosensitized cis-trans isomerization of 1,3-pentadiene

The quantum yields of thecis trans andtrans cis Hg 6(³P₁) photosensitized isomerizations of 1,3-pentadiene at 100 Torr and 22°C are 0.54±0.02 and 0.42±0.02, respectively. The steady state ratio ([trans]/[cis])_ss is 1.27±0.05 which is almost identical with the ratio of the quantum yields, (ct)/(tc)=1.29±0.10. Thecistrans isomerization is suggested as a useful actinometer for mercury sensitized reactions.

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Hg 6(³P₁) 1,3- 100 22°C 0,54±0,02 0,42±0,02, . ([]/[]) 1,27±0,05, ( )/( )=1,29±0,10. , .