Amy E. Shirk

Isomerization of hono in solid nitrogen by selective vibrational excitation

Abstract The cis—trans photoisomerization rates of HONO in solid nitrogen after single-photon excitation into two different vibrational modes of each isomer were measured. The rates are inconsistent with RRKM predictions and raise the possibility of mode-selective reactions in matrices. The barrier to HONO isomerization is estimated to be 3250 ± 100 cm −1 above the zero-point energy of trans-HONO.

Infrared spectra of monomeric gallium trihalides in solid argon

We have observed the infrared spectra of GaCl3, GaBr3, and GaI3 in solid argon. Some absorptions due to the dimers are also reported. Isotopic shifts were partially resolved in several cases. The observed spectra are all consistent with a planar D3h structure for each of these molecules.

Infrared spectra of AlCl2Br, AlClBr2, and AlBr3 in solid argon

We report the ir spectra of AlCl2Br, AlClBr2, and AlBr3. It is pointed out that the vibrational spectra of AlCl2Br and AlClBr2 can provide a novel and sensitive test for small deviations from planarity of AlCl3. The observed spectra imply a planar D3h structure for each of these trihalides.

Oxygen atom reactions with SiHCl3 in solid argon: The infrared spectrum of SiCl3OH

Abstract SiCl 3 OH is identified as a major reaction product of uv photolysis of SiHCl 3 O 3 and vacuum uv photolysis of SiHCl 3 O 2 mixtures in solid argon. The ir spectrum of normal and isotopically substituted SiCl 3 OH molecules is reported. The frequencies were fitted to a general valence force field.

The infrared spectrum of InCl3 in solid argon

Abstract We report the infrared spectrum of InCl 3 in solid argon. The observed spectrum is consistent with a planar D 3 h structure for this molecule.