Volume 71, 1981
From the journal:

Faraday Discussions of the Chemical Society

The 4114 Å absorption system of the HCCS radical

S. L. N. G. Krishnamachari  and  D. A. Ramsay  

Abstract

The transient absorption spectrum observed in the region 3770–4170 Å during the flash photolysis of thiophene is assigned to the HCCS free radical. Isotope shifts are observed when deuterated thiophene is used and establish the presence of a single H (or D) atom in the carrier. Under high resolution the bands show doublet P and R branches. The bands are tentatively assigned to a 2Π(b)–2Π(b) transition of a linear molecule, though the possibility that the molecule is slightly nonlinear in one of the combining states is not excluded. Rotational assignments are given for the two strongest bands of HCCS, including the O–O band near 4114 Å. The rotational constants for this band are B″0= 0.188 41(6) cm–1 and B′0–B″0=–0.014 399(6) cm–1, where the error limits are 3σ. (See, however, note added in proof.)

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Article information

DOI
https://doi.org/10.1039/DC9817100205
Article type
Paper

Faraday Discuss. Chem. Soc., 1981,71, 205-212

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The 4114 Å absorption system of the HCCS radical

S. L. N. G. Krishnamachari and D. A. Ramsay, Faraday Discuss. Chem. Soc., 1981, 71, 205 DOI: 10.1039/DC9817100205

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