Molecular structure of 1-methyl-1-fluoroquasisilatrane (2-methyl-2-fluoro-1,3-dioxa-6-aza-2-silacyclooctane) |
| |
| Authors: | A. A. Korlyukov M. G. Voronkov É. A. Zelbst E. A. Grebneva O. M. Trofimova M. Yu. Antipin |
| |
| Affiliation: | (1) A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia;(2) A. E. Favorskii Irkutsk Institute of Chemistry, Siberian Division, Russian Academy of Sciences, Irkutsk, Russia;(3) Irkutsk State Pedagogical University, Irkutsk, Russia |
| |
| 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. |
| |
| Keywords: | 1-methyl-1-fluoroquasisilatrane 2-methyl-2-fluoro-1,3-dioxa-6-aza-2-silacyclooctane molecular structure X-ray diffraction |
| 本文献已被 SpringerLink 等数据库收录！ |
|
