73344-94-2

Upstream product

• 60-35-5 acetamide 
• 132434-74-3 methylsilyl cation 
• 78818-98-1 5,6-Bis(trifluormethyl)-2,2-dideuterio-2-silabicyclo<2.2.2>octa-5,7-dien 
• 62-53-3 aniline 
• 124-40-3 dimethyl amine 
• 78818-98-1 C₉H₆⁽²⁾H₂F₆Si 

Relevant academic research and scientific papers

Thermochemistry of Silaethylene and Methylsilylene from Experiment and Theory

Fourier transform ion cyclotron resonance spectroscopy has been used to examine the deprotonation energetics of the methylsilyl cation, CH3SiD2+, to yield silaethylene and methylsilylene proton affinities of 205 +/- 3 and 215 +/- 4 kcal/mol, respectively.These values combined with the known heat of formation of methylsilyl cation, yield ΔHof 298(CH2SiH2) = 43 +/- 3 kcal/mol and ΔHof 298(CH3SiH) = 53 +/- 4 kcal/mol.These results are corroborated by ab initio generalized valence bond-configuration interaction calculations which indicate that silaethylene is more stable than methylsilylene by 11.6 kcal/mol, in excellent agreement with the experimental difference (10 +/- 3 kcal/mol).The adiabatic ionization potential of methylsilylene is calculated to be 8.22 eV, which is lower than the value of 8.85 eV determined for silaethyene using photoelectron spectroscopy.

Hetero-?-Systems, 8. Silaethene

By means of a combination of vacuum flash pyrolysis and matrix isolation silaethene (1a) and its simply substituted derivatives 1b-f can be prepared starting with precursors 9a-f of the silabicyclooctadiene type.Silaolefins 1a-f are stable in argon at 10 K and can be identified by their characteristic IR and UV spectra.