Ab initio Calculations of the Geometry, Electronic Structure, and Vibrational Spectrum of (Acetoxymethyl)triflouorosilane

被引:0
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作者
I. M. Lazarev
G. V. Ratovskii
E. I. Brodskaya
N. F. Lazareva
机构
[1] Russian Academy of Sciences,Favorskii Irkutsk Institute of Chemistry, Siberian Division
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Oxygen; Carbonyl; Oxygen Atom; Calculation Result; Experimental Spectrum;
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摘要
The geometries and electronic structures of various conformers of (acetoxymetyl)trifluorosilane, CH3C(O)OCH2SiF3, and also the frequencies and intensities of its vibration bands were studied by ab initio [RHF(6-31G*)] calculations. According to the experimental spectra and calculation results, the most stable is the conformation in which the donor-acceptor interaction = O→Si is realized. Analysis of the geometry, atomic charges, and molecular orbital energies shows that this donor-acceptor bond is mainly due to interaction of the lone electron pairs of the carbonyl oxygen atom with the vacant Σδ* orbitals of the C-Si-Fa moiety.
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页码:1065 / 1071
页数:6
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