Molecular and chemical dynamics of a biradical with six-coordinate silicon atom |
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| Authors: | R. R. Rakhimov A. I. Prokof'ev Ya. S. Lebedev |
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| Affiliation: | (1) V. I. Nikitin Institute of Chemistry, Academy of Sciences, Republic of Tadjikistan, 299 ul. Aini, 734063 Dushanbe, Republic of Tadjikistan;(2) A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 117813 Moscow, Russian Federation;(3) N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 ul. Kosygina, 117977 Moscow, Russian Federation |
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| Abstract: | The intramolecular dynamics of a silicon biradical complex witho-semiquinone ligands was studied in a frozen toluene solution. Analysis of the broadening and shifts of the canonical components in the ESR spectrum of this biradical allows one to detect the abrupt reorientation of the magnetic axes due to intramolecular single bond-unpaired electron exchange. The frequencies of chemical exchange at low temperatures were estimated. Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 1726–1730, October, 1993. |
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| Keywords: | ESR spectra silicon biradical complex o-semiquinone ligands molecular motions intramolecular chemical exchange |
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