Interconversions of the silylene-to-silene and germylene-to-germene types: direct spectroscopic studies and calculations |
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| Authors: | V. N. Khabashesku S. E. Boganov K. N. Kudin J. L. Margrave J. Michl O. M. Nefedov |
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| Affiliation: | (1) N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 117913 Moscow, Russian Federation;(2) Department of Chemistry, Rice University, 77005-1892 Houston, TX, USA;(3) Department of Chemistry and Biochemistry, University of Colorado, 80309-0215 Boulder, CO, USA |
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| Abstract: | The recent advances in spectroscopic and quantum-chemical studies of carbene-to-olefin isomerization of carbene analogs of Group 14 elements are discussed. Primary attention is devoted to the use of matrix isolation spectroscopy, whose successful combination with modern calculation techniques has resulted in the first spectroscopic characterization of a number of novel short-lived silylenes and germylenes and their structural isomers with unsaturated Si=C, Ge=C, and Si=O bonds. Based on invited lecture given by Professor Dr. V. N. Khabashesku at the Sixth International Conference on Chemistry of Carbenes and Related Intermediates (May 28–30, 1998, St. Petersburg, Russia). Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2027–2039, November, 1999. |
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| Keywords: | carbene analogs silylene-to-silene isomerization germylene-to-germene isomerization intfrared spectroscopy ultraviolet spectroscopy pyrolysis photochemistry matrix isolation quantum-chemical calculations unsaturated silicon-carbon bond unsaturated germanium-carbon bond metal atom reactions silacyclopentadienes germacyclopentadienes germenes silanones |
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