On the structure and electron photodetachment spectra of Ga3P- and Ga3As-

The main features of the Ga3P- photodetachment spectrum reported by Taylor, Asmis, Xu and Neumark [Chem. Phys. Lett. 297 (1998) 133] have been assigned. Ga3P- has a B-2(2) (C-2v) ground state. A near degeneracy is found between the (1)A(1) (C-2v) and the (1)A(1) (C-3v) states of Ga3P. The observed peaks are assigned to Ga3P states with C-2v structure. In line with Ga3P, the (1)A(1)(C-2v) and (1)A(1)(C-3v) states of Ga3As are nearly degenerate. Electron detachment processes are presented and discussed for the Ga3As-/Ga-3 As system on the basis of a C-2v ground state geometry for the anion and the neutral molecule. (C) 2002 Elsevier Science B.V. All rights reserved.