Surprisingly Slow Reaction of Dimethylsilylene with Dimethylgermane: Time-Resolved Kinetic Studies and Related Quantum Chemical Calculations
作者:Rosa Becerra、Sergey E. Boganov、Mikhail P. Egorov、Valery I. Faustov、Irina V. Krylova、Oleg M. Nefedov、Vladimir M. Promyslov、Robin Walsh
DOI:10.1021/jp710740a
日期:2008.2.1
Time-resolved studies of silylene, SiH2, and dimethylsilylene, SiMe2, generated by the 193 nm laser flash photolysis of appropriate precursor molecules have been carried out to obtain rate constants for their bimolecular reactions with dimethylgermane, Me2GeH2, in the gas phase. SiMe2 + Me2GeH2 was studied at five temperatures in the range 299-555 K. Problems of substrate UV absorption at 193 nm at
Molecular Structure of 1-Isocyano-1-silacyclopent-3-ene: A Combined Microwave Spectral and Theoretical Study
作者:Gamil A. Guirgis、Reilly E. Sonstrom、Austin J. Clark、Brooks H. Pate、Michael H. Palmer
DOI:10.1021/acs.jpca.9b00652
日期:2019.5.23
attractive force between the ring and isocyanate groups by a through-space interaction. An atoms in molecule study, where the local minima of electron density are determined, fails to disclose the exact nature of the interaction; however, a highly polarized skeleton was obtained. A systematic theoretical study of the Si–N═C angle potential energy surface (PES) relative to the ring gave a very shallow double
The molecular structure and curious motions in 1,1-difluorosilacyclopent-3-ene and silacyclopent-3-ene as determined by microwave spectroscopy and quantum chemical calculations
作者:Thomas M. C. McFadden、Nicole Moon、Frank E. Marshall、Amanda J. Duerden、Esther J. Ocola、Jaan Laane、Gamil A. Guirgis、G. S. Grubbs
DOI:10.1039/d1cp04286f
日期:——
The molecules 1,1-difluorosilacyclopent-3-ene (3SiCPF2) and silacyclopent-3-ene (3SiCP) have been synthesized and studied using chirped pulse, Fourier transform microwave (CP-FTMW) spectroscopy. For 3SiCP this is the first ever microwave study of the molecule and, for 3SiCPF2, the spectra reported in this work have been combined with that of previous work in a global fit. The spectra of each contain
IR laser-induced thermolysis of silacyclopent-3-ene: extrusion of silylene and chemical vapour deposition of polycarbosilane phases via reactions of silylene, buta-1,3-diene and methylene
decomposition and infrared laser multiphoton decomposition of silacyclopent-3-ene occur as extrusion of silylene, yielding butadiene as a major gaseous product and affording chemical vapour deposition of solid saturated polycarbosilane films. The involvement of H2Si:, H2C: and buta-1,3-diene in the formation of the films is revealed through quantification of the gaseous products and identification of H2Si:
silacyclopent-3-ene的红外激光诱导(SF 6)光敏分解和红外激光多光子分解随着硅烯的挤出而发生,从而产生丁二烯作为主要的气态产物,并提供化学气相沉积的固体饱和聚碳硅烷薄膜。通过气态产物的定量和通过激光诱导的荧光鉴定H 2 Si :和H 2 C :揭示了H 2 Si :,H 2 C :和丁1,3-二烯参与膜的形成。。
Laser-powered homogeneous pyrolysis of 4-silaspiro[3,3]heptane. A source for 2-silaallene and its polymer
作者:M Urbanová、E.A Volnina、L.E Gusel'nikov、Z Bastl、J Pola
DOI:10.1016/0022-328x(95)05797-s
日期:1996.2
Continuous-wave CO2 laser-photosensitized (SF6) decomposition of 4-silaspiro[3,3]heptane is dominated by the transient formation and polymerization of 2-silaallene. The first experimental evidence for 2-silaallene has been achieved via scavenging with alcohols ROH (R CH3, CF3CH2) to afford dialkoxy(dimethyl)silanes, (RO)2Si(CH3)2. ESCA analysis of the polymer demonstrates SiC2 stoichiometry and indicates