Photochemistry in the charge transfer and neutral excited states of HCl in Xe and Kr matrices

Berghof, V.; Gudipati, Murthy S.; Schwentner, N.

doi:10.1063/1.1631816

Cited by 4 publications

(2 citation statements)

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“…This suggests that the possibility of formation channels involving ions as intermediates should be considered. The recent experiments by Berghof et al (92), using synchrotron radiation to excite HCl in Xe and Kr also indicate that ionic species may be involved in the formation of HXeCl, HKrCl. Ionic mechanisms leading to Xe-F bond formation have been proposed in more complex media, Xe and F-doped Xe SiO x thin films (93).…”

Section: Mechanisms and Dynamics Of Formationmentioning

confidence: 92%

Formation of Novel Rare-Gas Molecules in Low-Temperature Matrices

Gerber

2004

Annu. Rev. Phys. Chem.

182

150

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Progress in the study of a new class of chemically bound compounds of noble-gas atoms is reviewed. The focus is on rare-gas molecules of the form HNgY, where Ng is a noble-gas atom and Y is an electronegative group, prepared by photolysis of HY in the rare-gas matrix. Other related types of new molecules of noble-gas atoms are discussed as well. Topics discussed in this review include: (a) The nature of bonding and the energetic stability of the compounds. (b) The vibrational spectroscopy of the molecules, and its role in identification of the species. (c) The mechanism and dynamics of photochemical formation of HNgY in the matrix, and the pathways for thermal and infrared (IR)-induced decomposition. Specifically, attention is given to the issue of "direct" formation following photolysis of HY versus "delayed" formation involving H atom diffusion. (d) Molecules of the lighter rare gases Ar, Ne, and He, focusing on the experimentally prepared HArF and on theoretical predictions suggesting the existence of other molecules. (e) The most-recently discovered photochemically induced insertion compounds of Ng into hydrocarbons, such as HXeCCH. (f) Clusters of HNgY with other molecules. The possible existence of neat aggregates and crystals of HNgY. The reviewed state-of-the-art suggests this field is at an early stage of development with major open questions bearing on the surprising properties of the molecules and on the formation mechanisms. These are part of the challenge for the future.

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Section: Mechanisms and Dynamics Of Formationmentioning

confidence: 92%

Formation of Novel Rare-Gas Molecules in Low-Temperature Matrices

Gerber

2004

Annu. Rev. Phys. Chem.

182

150

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“…Cl2 in Ar matrices [302]; Me2Zn in argon matrices [303]; CH4 in Kr matrices [304]; CH3OH in solid Ar and Ne [305]; as well as the photochemistry of HCl in rare gas matrices [306][307][308]. SR vac-UV radiation has been used to identify the photoionisation threshold of CS2 [309] and C6F6 [310] in solid Ne, and the valence photoionisation of CH3C(O)SCH3 [311].…”

Section: Sr Vacuum Ultraviolet Studies Of Matrix Isolated Speciesmentioning

confidence: 99%

The application of synchrotron radiation and in particular X-ray absorption spectroscopy to matrix isolated species

Young

2014

Coordination Chemistry Reviews

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This review provides comprehensive coverage of the application of X-ray absorption spectroscopy (XAS, XAFS, EXAFS, XANES) to matrix isolated species. As X-ray absorption spectroscopy provides structural data without the need for long range order it has been applied to a large number of systems to yield unique structural data about both the matrix isolated species, and their interactions with the matrix host. To put the work into perspective there is a tutorial introduction to the theoretical background of X-ray absorption spectroscopy, data content, processing and analysis. In addition there is brief coverage of the use of other synchrotron radiation techniques for the study of matrix isolated species, and a consideration of future perspectives.

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