The application is described of our recently developed current density analysis of photodissociation to the methyl nitrite (CHaONO) system. The spectrum exhibits a series of vibrational resonances, or predissociating states, arising from a local minimum in the excited state potential surface. The de
3D wavepacket study of the photodissociation of CH3ONO(S1)
β Scribed by A. Untch; K. Weide; R. Schinke
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 537 KB
- Volume
- 180
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
We report the first results of a tbre.edimensional wavepacket study for the photodissociation of methyl nitrite via the S, state. The calculation includes the O-N and the N-O bond distances as well as the ON0 bending angle and uses a previously published ab initio potential energy surface. We present the calculated absorption spectrum and the final vibrational-and rotational-state distributions of the NO fragment for one particular photon wavelength. They agree well with the corresponding experimental data.
π SIMILAR VOLUMES
The single photon photodissociation of CH30N0, C2HsON0, and CsH,ONO has been studied under collision-free conditions using multiphoton ionization to detect the NO fragment. NO rotational -citation from CHsONO was very large (.&rot > 2100 cm-') and non-thermal, while QHsONO and C3H70NO produced NO wh
The kinetics of the reactions of Cl atoms with CH 3 ONO and CH 3 ONO 2 have been studied using relative rate techniques. In 700 Torr of nitrogen diluent at 295 is in good agreement with the literature data. The result for k(Cl Ο© CH 3 ONO) is a factor of 4.5 lower than that reported previously. It s
Alignment effects in the highly rotating NO X %I vn = 1 fragment generated from photodissociation of CHaONO mr\* at 355 nm have been probed by two-photon laser-induced fluorescence spectra. From polarization experiments the rotational angular momentum of NO fragments was shown to be aligned preferen
The reaction of hydrogen atoms with methyl nitrite was studied in a fast-flow system The associated biusing photoionization mass spectrometry and excess atomic hydrogen. molecular rate coefficient can be expressed by k, = (4.3 f 0.9) x 10-13 exp [ -(1900 f 110) cal/mol . R T ] cm3/molecule . sec in
Single-photon dissociation of Hg(CH& at 248 and 193 nm produces CH, radicals with substanual ewxauon in Ihe ~2 out4planc bend and the uj antisymmetric stretch. At 218 nm the antisymmetnc stretch excdation is charackrized by a 1200-1500 K rotational temperature and a nbratiorul dlslrlbuuon sl : ~2 :