Abstract

Photoelectron spectra of carbon dioxide, carbon disulphide and sulphur dioxide excited by 584 Å radiation have been measured at a resolution of 20 mV over the whole energy range. Ionization potentials, vibration frequencies of the ions and relative vibrational transition probabilities are presented for carbon dioxide and carbon disulphide and are used to derived structural information about the ionic states. A vibrational analysis of the photoelectron spectrum of sulphur dioxide leads to estimates of the ionic geometry in different states and to the conclusion that dπ bonding is effective in one of the 4 b 2 or 1 a 2 orbitals.

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