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- Title
Molecular structure of 1-methyl-1-fluoroquasisilatrane (2-methyl-2-fluoro-1,3-dioxa-6-aza-2-silacyclooctane).
- Authors
Korlyukov, A. A.; Voronkov, M. G.; Zelbst, É. A.; Grebneva, E. A.; Trofimova, O. M.; Antipin, M. Yu.
- Abstract
The molecular structure of 1-methyl-1-fluoroquasisilatrane (2-methyl-2-fluoro-1,3-dioxa-6-aza-2-silacyclooctane) MeFSi(OCH2CH2)2NH ( I) is determined by single crystal X-ray diffraction at 100 K. The coordination polyhedron of the silicon atom in this molecule is a slightly distorted trigonal bipyramid with an NH group and a strongly electron-withdrawing fluorine atom in the axial positions, and two endocyclic oxygen atoms and a CH3 group in three vertices of the equatorial plane. The axial angle N→SiF is 171°. The length of the transannular donor-acceptor bond N→Si (2.058 Å) is as small as in 1-fluorosilatrane. The axial bond F-Si (1.660 Å) is longer than that in 1-fluorosilatrane and tetrahedral silicon compounds.
- Subjects
MOLECULAR structure; SILICON; ATOMS; MOLECULES; SILICON compounds; INORGANIC compounds; ELECTRONS
- Publication
Journal of Structural Chemistry, 2008, Vol 49, Issue 4, p732
- ISSN
0022-4766
- Publication type
Article
- DOI
10.1007/s10947-008-0102-8