Abstract
The ground-state rotational spectra of 10 isotopic species of a weakly bound complex formed by H2S and HCN in the gas phase have been investigated by the technique of pulsed-nozzle, Fourier-transform microwave spectroscopy. The following rotational constants, ½(B0+C0), centrifugal distortion constants, DJ, and 14N nuclear quadrupole coupling constants, χaa, have been determined: [graphic omitted] Analysis of the constants ½(B0+C0) shows that they are consistent only with a geometry of the complex in which the HCN molecule acts as a proton donor in forming a hydrogen bond to the S atom of H2S. The S, C and N nuclei are collinear (or nearly so), with r(S⋯C)= 3.8088 A and with the angle ϕ between the S⋯HCN line and the plane of the H2S subunit equal to 84.5°.
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Schedule a callMore From: Journal of the Chemical Society, Faraday Transactions 2
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