UNSPECIFIED (1998) Photoelectron spectra, electronic structure, coincidence spectra and dissociation mechanisms of the hydrogen cyanide cation. CHEMICAL PHYSICS, 229 (2-3). pp. 149-163. ISSN 0301-0104

Full text not available from this repository.

Abstract

Photoelectron spectra of HCN and DCN have been recorded at a resolution of 4.5 meV or better using HeI and HeII radiation;Ind have been interpreted by comparison with high-level electronic structure calculations. The calculations predict that HCN+ in the (B) over tilde state, previously thought to be linear, is bent at equilibrium. The spectrum for this state shows strong excitation of the C-H stretching mode and the bending mode. both with frequencies much lower than in neutral HCN. A new satellite state with resolved vibrational structure is found at 22.5 eV, and another new state is seen at 33 eV. The dissociation pathways of HCN+ in (B) over tilde and higher states have been determined by photoelectron-photoion coincidence spectroscopy. There is competition between H+ and CN+ production from most of the resolved levels of the (B) over tilde state above the CN+ threshold: the diatomic products have little vibrational energy. Both the sharp vibrational structure and the competition show that predissociation is slow; the calculations indicate the existence of a barrier, preventing direct dissociation. (C) 1998 Elsevier Science B.V.

Item Type:	Journal Article
Subjects:	Q Science > QD Chemistry Q Science > QC Physics
Journal or Publication Title:	CHEMICAL PHYSICS
Publisher:	ELSEVIER SCIENCE BV
ISSN:	0301-0104
Date:	1 April 1998
Volume:	229
Number:	2-3
Number of Pages:	15
Page Range:	pp. 149-163
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/15781

Data sourced from Thomson Reuters' Web of Knowledge

Request changes to a record

Actions (login required)

View Item