H. Nakanishi, W. Jones, J. Thomas
Apr 1, 1980
Citations
0
Influential Citations
34
Citations
Journal
Chemical Physics Letters
Abstract
Abstract The topochemical and topotactic solid-state photodimerization of 2-benzyl-5-benzylidenecyclopentanone is shown to be single-crystal-to-single-crystal, with the cell parameters of the monomer and dimer being very nearly identical (the maximum change being a contraction of 0.7% along c ). For 2-benzl-5- p -bromobenzylidenecyclopentanone, the change in cell parameters is significantly larger (the maximum change being an elongation of 6.5% along c) such that the crystallinity of the final product varies with amongst other factors, the rate of reaction. A study of such benzylidenecyclopentanone derivatives should permit a greater understanding of those processes which determine the crystalline perfection of the reaction products.