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Published on: May 29, 2018
The rotational spectrum and geometrical structure of thiozone, S3
Michael C McCarthy1, Sven Thorwirth, Carl A Gottlieb
1Harvard-Smithsonian Center for Astrophysics, Cambridge and Division of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts, USA. mccarthy@cfa.harvard.edu
Abstract:
The rotational spectrum of thiozone, S3, has been observed for the first time. From the rotational constants of the normal and 34S isotopic species, a precise geometrical structure has been derived: S3 is a bent chain with a bond to the apex S of length 1.917(1) A and an apex angle of 117.36(6) degrees . The derived structural parameters indicate substantial double-bonding character in S3 and sp2 hybridization of the central sulfur atom. Thiozone is an excellent candidate for astronomical detection in the atmosphere of Io, the innermost Galilean moon of Jupiter, and in rich interstellar sources.
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