K. Barati, M. Habibi, M. Montazerozohori
Feb 10, 2009
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Journal
Journal of Coordination Chemistry
Abstract
The crystal structure of [N,N0-bis(4-fluorobenzylidene)ethylenediamine]bromo(triphenylphosphine)copper(I) (C34H29BrCuF2N2P) (1), a model compound for photoisomerization reactions which occur in photobiological processes such as vision, has been determined from X-ray diffraction data. The compound crystallizes in the monoclinic space group P21/c with a1⁄4 19.1663(18), b1⁄4 13.2456(13), c1⁄4 11.9120(11) Å and 1⁄4 90 , 1⁄4 90.004(2) and 1⁄4 90 . The coordination polyhedron around copper(I) in this complex is best described as a distorted tetrahedron. Photochemical investigations in solution of the time resolved spectral changes, recorded before and after irradiation, show the transformation from syn to anti configuration of the C1⁄4N bond. Spectral profile and K rate constant were evaluated using multivariate curve resolution and non-linear least squares curve fitting by toolbox of MATLAB program using the corresponding absorption spectra-time data.