Microwave Detection of Thioformaldehyde

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Science  14 Aug 1970:
Vol. 169, Issue 3946, pp. 679-680
DOI: 10.1126/science.169.3946.679


Thioformaldehyde (H2CS) has been detected and characterized from its microwave spectrum. Preliminary analysis of rotational transitions for the sulfur-32-containing form of H2CS shows this new species to have C2v symmetry with rotational constants (in megahertz) of A = 292,729, B = 17,698, and C = 16,652. The possibility of detection of thioformaldehyde in the interstellar medium is discussed, and a table of transitions expected to be of importance for that detection is presented.