The structure of H2S⋅HF and the stereochemistry of the hydrogen bond
- 1 August 1982
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 77 (3) , 1166-1174
- https://doi.org/10.1063/1.443981
Abstract
The radiofrequency and microwave spectra of H2S⋅HF and deuterium substituted analogs have been studied by molecular beam electric resonance spectroscopy. Rotational constant data, electric dipole moments, and nuclear hyperfine interactions were obtained from the spectra. The structure determined from this data has H2S as the proton acceptor. The hydrogen bond is linear to within ±10°. The S⋅⋅⋅F distance is 3.249 Å. The plane of the H2S is oriented perpendicular to the hydrogen bond axis within conservative error limits of ±10°. The right angle structure of H2S⋅HF compared to the tetrahedral orientation of the proton acceptors in (H2O)2, (HF)2, and HF⋅HCl shows a striking analogy to the geometries of first and second row hydrides. This result is discussed in terms of traditional chemical concepts.Keywords
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