The Hg 6(3P1) photosensitized reactions of 3‐methylcyclohexene
- 1 January 1972
- journal article
- research article
- Published by Wiley in Bulletin des Sociétés Chimiques Belges
- Vol. 81 (1) , 459-465
- https://doi.org/10.1002/bscb.19720810143
Abstract
The major products of the reaction at 26° are H2, CH4, C2H4, cis‐ and trans‐1,3‐pentadiene, methylcyclohexane and an isomer of the substrate. Two modes of quenching of the Hg 6(3P1) atoms are presumed to occur: paraffinic type quenching into the C‐H bonds of the molecule and quenching into the CH bond to form vibrationally excited triplet molecules which undergo allylic C‐C and C‐H bond cleavage. Under initial conditions the ratio of trans‐ to cis‐1,3‐pentadiene formed is ≥ 2.0. This can be explained by assuming that the 1,3‐pentadiene is formed in its s‐cis triplet state.Keywords
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