Synthesis and complexation properties of photochromic benzochromenes containing aza-and diaza-18-crown-6-ether fragments |
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| Authors: | O. A. Fedorova Yu. P. Strokach A. V. Chebun’kova T. M. Valova S. P. Gromov M. V. Alfimov V. Lokshin A. Samat |
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| Affiliation: | (1) Photochemistry Center, Russian Academy of Sciences, 7a ul. Novatorov, 119421 Moscow, Russian Federation;(2) Department of Natural Sciences, Mediterranean University, UMR 6114 CNRS, Luminy, 13288 Marseille, France |
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| Abstract: | Complex formation of Mg2+, Ba2+, and Pb2+ perchlorates with 3,3-diphenyl-3H-benzo[f]chromenes containing aza-and diaza-18-crown-6-ether or morpholine fragments was studied. The strong influence of the metal cations on the spectral characteristics of these organic ligands and on the kinetic of photochromic transformations was found. The results obtained were explained by the formation of carbonyl-“ capped” complexes of various structures. Faculte des Sciences de Luminy, Universite de la Mediterranee, UMR 6114 CNRS, 13288 Marseille, France. Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 280—287, February, 2006. |
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| Keywords: | aza-18-crown-6 ethers 3,3-diphenyl-3H-benzo[f]chromenes complex formation photoinduced transformations carbonyl-“ capped” complex magnesium complexes barium complexes lead complexes |
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