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Rotational spectra and geometries of the gas-phase dimers (CH4,HF) and (CH4,HCl)

โœ Scribed by A.C. Legon; B.P. Roberts; A.L. Wallwork

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
674 KB
Volume
173
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

The rotational spectra of five isotopomers of the dimer (CH,,HCl) and two isotopomers of the dimer (CH.,,HF) have been investigated by the pulsed-nozzle FT microwave technique. Detailed consideration of the spectroscopic constants allows the conclusion that the HQ complex has an effective Cr" geometry of the type CH+HCl with a single hydrogen bond and internal rotation of the CI-I, subunit while the interaction in (CHI,HF) is of the two-centre type, involving bonds CH...F and C...HF, which appears effectively to quench the internal rotation.

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