IR transition moment directions in matrix-isolated dimethylsilylene and 1-methylsilene

Silenes: Connectors between classical alkenes and nonclassical heavy alkenes

“…Thus a Me group at C very modestly blueshifts the Si C bond stretch [17,94,96,105,106]. Conversely, the attachment of a hydroxyl group at Si, as in Me(HO)Si CH 2 (62), moves the Si C stretch vibration to lower wavenumbers (899 cm −1 ) [107], in accordance with Gusel'nikov's computations that indicate Si C bond weakening by electronegative substituents at Si [49].…”

Photochromism and polarization spectroscopy of p-methyl(thiobenzoyl)acetone

“…Photolysis with polarized light leads to photoorientationpartial alignment of both the photoproduct and the remaining substrate. This alignment can then be probed, e.g., by measuring linear dichroism on such photooriented samples [11].…”

CO2 laser excitation of triethylsilane: Time resolved luminescence of diethylsilyl radical

“…The absorption spectra of silaethenes have been observed in matrices, and exhibit an absorption band at 260 nm that is attributed to a n--n-* transition along the Si = C bond [261. In addition, silaethenes have a strong absorption band at 988 cm-l corresponding to the Si = C stretch [26], and may undergo IRMPE. However, the absence of any CH4 in the photolysis products suggests that reaction (3) does not occur in our experiments.…”