R. L. Kuczkowski, R. Suenram, F. Lovas
May 1, 1981
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2
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Journal
Journal of the American Chemical Society
Abstract
The microwave spectra of the normal, 34S, D,, and D2 isotopic species of gaseous sulfuric acid have been assigned. Rotational and centrifugal distortion constants were obtained. A conformation with C, symmetry has been identified. Important structural parameters are r ( 0 H ) = 0.97 (1) A, r ( S O I ) = 1.574 (10) A, r(S0,) = 1.422 (10) A, LH,O,S = 108.5 (15), LOlSO18 = 101.3 (lo)’, LO2SO2< = 123.3 (lo)’. The torsional angle Ol8SOIH is -90.9 (10)’ and the two SOz planes form an angle of 88.4 (1)’. The dipole moment was determined to be 2.725 (15) D. A comparison of the derived structural parameters with related species is presented, and the possibility of the undetected existence of other stable conformations of sulfuric acid is discussed.