Excited states of XH2+ (X=C, N, O, S) ions: a combined experimental and theoretical study

Hamdan, M. ; Mazumdar, S. ; Marathe, V. R. ; Badrinathan, C. ; Brenton, A. G. ; Mathur, D. (1988) Excited states of XH2+ (X=C, N, O, S) ions: a combined experimental and theoretical study Journal of Physics B: Atomic, Molecular and Optical Physics, 21 (14). pp. 2571-2584. ISSN 0953-4075

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Official URL: http://iopscience.iop.org/0953-4075/21/14/010

Related URL: http://dx.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.

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