Triplet state spectroscopy and photophysics of As2 in solid neon

Abstract

As2 dimer molecules generated by evaporating gallium arsenide were trapped and studied in solid neon. Components of at least three different excited electronic states are populated by direct tunable laser excitation and observed in phosphorescence. Nonradiative vibrational and electronic relaxation processes occurring in the matrix have been investigated. The electronic structure and spectroscopy of As2 is reviewed and summarized.

Geometric and electronic structure of ground and excited states of groupVA diatomics. A theoretical LCGTO-MP-LSD study

“…The spectroscopic constants of As 2 are reported in Table 4. For this system experimental [6,38] and recent accurate ab-initio MCSCF [36] studies have been published. As shown in Table 4 The results for the last considered homonuclear diatomic Sb 2 are collected in Table 5.…”

“…Experimentally most of the spectroscopic parameters of the ground state are known for all the group VA diatomics [6]. In addition those for several low-lying excited states are available for P2 [6], As 2 [6,38], AsN [6,39], AsP [6,40], and SbP [6,40] other than for N 2 [6]. In this paper we report the results of a LCGTO-MP-LSD study on the ground and several low-lying excited states of group VA diatomics (N2, P2, As2, Sb2, PN, AsN, AsP, SbN, SbP, AsSb).…”

Structure and spectroscopy of phosphorus cluster anions: Theory (simulated annealing) and experiment (photoelectron detachment)

“…⌸ g states makes an assignment difficult Nevertheless, while the 3 ⌬ u state has not yet been observed in P 2 , there is evidence that it lies between the 3 ⌺ u ϩ and 3 ⌺ u Ϫ states in the other group Va ͑group 15͒ dimers N 2 ,38,39 As 2 ,40 and Bi 2 and Sb 2 24,41. …”

Multireference configuration interaction study on spectroscopic properties of low-lying electronic states of As2molecule

“…Summarizing these theoretical results, we could find that the extracted spectroscopic properties from the investigations mainly focus on the ground state. Only two groups [32,33] reported on the results of e 3 ∆ u , a 3 Σ − u , and d 3 Π g electronic states, and their spectroscopic parameters [32,33] are far from the available measurements [3,7,8,10,14] in general, and the T e of d 3 Π g electronic state in particular. In addition, since the As 2 is a large molecule, the effect on spectroscopic properties by relativistic correction should be important.…”

“…[1,2] Such interest stems in part from the desire to characterize the properties of atoms on metal surfaces and understand a molecular level heterogeneous chemical catalysis and similar processes occurring on metal surfaces. [3] Arsenic is usually considered to be a nonmetallic element, but it possesses metal-like properties, such as a high conductivity. Therefore, the structure and spectrum of As 2 have been the subject of numerous investigations in the past several decades, both experimentally [4][5][6][7][8][9][10][11][12][13][14][15][16][17] and theoretically [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] In experiment, the spectrum of As 2 molecule has been extensively investigated.…”