1,3-Disilacyclopent-4-ene has been synthesized and its far-infrared, mid-infrared, and Raman spectra have been analyzed. From the far-infrared data of the molecule in the vapor phase, which shows a series of 10 bands between 48 and 85 cm-1, the ring-puckering potential energy surface was determined to be V (cm-1) = 1.48 x 10(5)x4 + 0.30 x 10(4)x2, where x is the ring-puckering coordinate in angstroms. This shows the molecule to be planar but to be not nearly as rigid as silacyclopent-2-ene. Other features in the infrared, Raman, and NMR spectra confirm that the interactions between the silicon atoms and the carbon-carbon double bond, while present, are reduced relative to silacyclopent-2-ene.
AUNER N.; GROBE J., J. ORGANOMETAL. CHEM., 1980, 188, NO 2, 151-177
作者:AUNER N.、 GROBE J.
DOI:——
日期:——
Silaethane
作者:N. Auner、J. Grobe
DOI:10.1016/s0022-328x(00)82810-7
日期:1980.4
1,3-Disilacyclobutanes of the types are prepared (a) by ring synthesis from chloromethylchlorosilanes R1R2Si(CH2Cl)Cl, (b) by thermolysis of monosilacyclobutanes R1R2H2CH2, and (c) by substitution of chlorine with alkyl groups in SiCl-containing 1,3-disilacyclobutanes, obtained by procedures (a) or (b). The compounds have been characterized by analytical and spectroscopic investigations. The synthetic
Vibrational spectra, ring-puckering potential energy function, and conformation of 1,3-disilacyclopent-4-ene
作者:Lloyd F. Colegrove、Jaan Laane
DOI:10.1021/j100170a021
日期:1991.8
1,3-Disilacyclopent-4-ene has been synthesized and its far-infrared, mid-infrared, and Raman spectra have been analyzed. From the far-infrared data of the molecule in the vapor phase, which shows a series of 10 bands between 48 and 85 cm-1, the ring-puckering potential energy surface was determined to be V (cm-1) = 1.48 x 10(5)x4 + 0.30 x 10(4)x2, where x is the ring-puckering coordinate in angstroms. This shows the molecule to be planar but to be not nearly as rigid as silacyclopent-2-ene. Other features in the infrared, Raman, and NMR spectra confirm that the interactions between the silicon atoms and the carbon-carbon double bond, while present, are reduced relative to silacyclopent-2-ene.