Excited states of XH2+(X=C, N, O, S) ions: a combined experimental and theoretical study
- 28 July 1988
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 21 (14) , 2571-2584
- https://doi.org/10.1088/0953-4075/21/14/010
Abstract
Excited electronic states of doubly charged molecular ions of the diatomic hydrides CH2+, NH2+, OH2+ and SH2+ are investigated by means of high-resolution translational energy spectrometry. Long-lived states of CH2+, NH2+ and SH2+ (but not OH2+) are observed. Potential energy functions are calculated using a semi-empirical molecular-orbital technique as well as a high-level ab initio method using large basis sets of at least double zeta plus polarisation quality. Translational energy spectra of singly charged hydride ions are also presented.Keywords
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