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Title:Electronic bands of ScC in the region 620 - 720 nm
Author(s):Merer, Anthony
Contributor(s):Hsu, Yen-Chu; Chen, Chiao-Wei
Subject(s):Metal containing
Abstract:ScC molecules have been observed by laser-induced fluorescence, following the reaction of laser-ablated scandium metal with acetylene under supersonic jet-cooled conditions. Rotational analyses have been carried out for about 40 bands of Sc${}^{12}$C and Sc${}^{13}$C in the region 14000 - 16000 cm$^{-1}$. Two lower states are found, with $\Omega$ = 3/2 and 5/2, indicating that the ground state is $^4\Pi_i$ or $^2\Delta$. As yet we cannot distinguish between these alternatives, but note that the ground state of the isoelectronic YC molecule\footnote{B. Simard, P.A. Hackett and W.J. Balfour, Chem. Phys. Lett., {\bf 230}, 103 (1994).} is $^4\Pi_i$. The ground state bond length in ScC is 1.95${}_5$ \AA, and the vibrational frequency is 712 cm$^{-1}$. At least eight electronic transitions occur in the region studied, the majority obeying the selection rule $\Delta$$\Omega$ = +1. Rotational perturbations are widespread, consistent with a high density of excited electronic states.
Issue Date:2016-06-23
Publisher:International Symposium on Molecular Spectroscopy
Genre:Conference Paper/Presentation
Rights Information:Copyright 2016 by the authors
Date Available in IDEALS:2017-01-26

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