The structure of 1-chloro-1-silabicyclo(2.2.2)octane as determined by gas-phase electron diffraction

Schei, H.; Shen, Quang; Cunico, Robert F.; Hilderbrandt, R. L.

doi:10.1016/0022-2860(80)85310-5

Cited by 16 publications

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“…The analysis of the experimental data shows convincingly that the 1-chloro-1-silabicyclo[2.2.2]octane molecule 120 [206] exists as a twisted C 3 form rather than in the C 3v conformation consisting of three fused boat silacyclohexane rings, the twist angle Si (1 )C ( 2)C ( 3)C(4) being 17.5°. The molecular structure of 1-methyl-1-silabicyclo[2.2.2]octatriene 121 [207] shows a rather significant amount of angular distortion, most of which appears to be localized at the bridgehead silicon atom while the bond angles at the carbon bridgehead are relatively normal (ZC=CC =119.4°, ZCCC=108.3°).…”

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confidence: 64%

Molecular Structure of Sila-Heterocycles

Lukevics¹,

Pudova²

1998

Main Group Metal Chemistry

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The present review provides a comprehensive survey on the molecular structure of silaheterocyclic compounds (silacyclopropanes, silacyclobutanes, silacyclopentanes, silacyclohexanes and derivatives with larger rings, as well as compounds with fused and unsaturated heterocycles). In a lot of cases the heterocycles include also heteroatoms other than silicon, however, all silaheterocycles under consideration contain only Si-C bonds. INTRODUCTIONThe results of the structural investigations of the organosilicon heterocycles were reviewed in 1989 [1], However, sila-heterocycles have been the subject of extensive studies over the last 10 years. Much attention has been focused on the synthesis and structural characterization both derivatives with small rings and the macrocyclic compounds. There has been also a considerable interest in the cyclic π-electronic systems containing the silicon atom. Much of this interest concerns the possibility of aromatic character for the silole anions and dianions. Recently the first neutral silaaromatic compound -2-silanaphthalene was successfully isolated and structurally characterized. Our review is an attempt to summarize and systematize the numerous papers scattered in literature on this subject.

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confidence: 64%