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The Photochemical Iodine-Sensitized cis-trans Isomerization of Dichloroethylene

Dickinson, Roscoe G. and Wallis, Richard F. and Wood, Reuben E. (1949) The Photochemical Iodine-Sensitized cis-trans Isomerization of Dichloroethylene. Journal of the American Chemical Society, 71 (4). pp. 1238-1245. ISSN 0002-7863. doi:10.1021/ja01172a029.

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The kinetics of a number of cis-trans isomerization reactions occurring in the presence of iodine can be interpreted in terms of a mechanism involving catalysis by iodine atoms. We have studied the photochemical iodine-sensitized isomerization of cis- and trans-dichloroethylene and find that the kinetics of this reaction are compatible with such a mechanism.

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Additional Information:© 1949 American Chemical Society. Received October 26, 1948. This study was begun and pursued by Dickinson and Wood during the academic year 1939-1940. The experiments made at that time were rate measurements on the above-named reaction carried out in decalin solutions. Fairly consistent results were obtained for specific rate constants and their temperature coefficients, and kinetics in agreement with those reported in this paper were indicated. However, side reactions involving the iodine occurred appreciably in the experiments in decalin solutions, as shown by decreases in concentration of free iodine during the runs; the results of those experiments could not, therefore, be interpreted in terms of the kinetics of the isomerization reaction so precisely and straightforwardly as should be possible with experiments involving no considerable side reactions. During the academic year 1947-1948 new experiments were carried out the description and results of which are presented in this paper. The other two authors take responsibility for this publication but we have taken the liberty to include Professor Dickinson’s name with ours in recognition of his proposal of and important contributions to this research.
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Gates and Crellin Laboratories of Chemistry1242
Issue or Number:4
Record Number:CaltechAUTHORS:20180724-121639351
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Official Citation:The Photochemical Iodine-Sensitized cis--trans Isomerization of Dichloroethylene Roscoe G. Dickinson, Richard F. Wallis, and Reuben E. Wood Journal of the American Chemical Society 1949 71 (4), 1238-1245 DOI: 10.1021/ja01172a029
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:88183
Deposited By: George Porter
Deposited On:24 Jul 2018 21:31
Last Modified:16 Nov 2021 00:24

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