Low Temperature Physics: 45, 689 (2019); https://doi.org/10.1063/1.5111288
Fizika Nizkikh Temperatur: Volume 45, Number 7 (July 2019), p. 807-815    ( to contents , go back )

Bi2Ne: Weakly bound cluster of diatomic bismuth with neon

A. Endo1, M. Hatanaka2,3, N. Ueno1, Y. Morisawa1, and T. Wakabayashi1

1Department of Chemistry, School of Science and Engineering, Kindai University, Higashi-Osaka 577-8502, Japan

2Institute for Research Initiatives, Graduate School of Science and Technology, and Data Science Center, Nara Institute of Science and Technology (NAIST), Ikoma 630-0192, Japan

3PRESTO, Japan Science and Technology Agency (JST), Kawaguchi 332-0012, Japan
E-mail: wakaba@chem.kindai.ac.jp
pos Анотація:

Received January 6, 2019, published online May 28, 2019

Abstract

The A–X transition of diatomic bismuth, Bi2, was revisited by laser induced fluorescence in solid Ne at 3 K. Molecular constants, i.e., vibrational frequencies of 137 cm–1 and 174 cm–1, were reproduced for the upper andlower electronic states as reported by Bondybey et al. [Chem. Phys. Lett. 76, 30 (1980)]. Two-dimensional map-ping of emission spectra confirmed satellite bands in higher and lower excitation/emission energies for each of the major bands in the vibrational progression of v′–v″ (v′ = 0–5, v″ = 5–12). Based on the molecular orbital cal-culations, presence of clusters, Bi2Nen (n = 1–6), is proposed for possible carriers of the observed satellites. For the relatively large matrix shift of ~ 67 cm–1 in solid Ne for the term energy of the A state, the diatomic bismuthis supposed to exist as a linearly coordinated cluster of Bi2Ne in the matrix.

Key words: bound cluster, fluorescence, diatomic bismuth.

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