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Identification and molecular geometry of a weakly bound dimer (H2O, HC1 in the gas phase by rotational spectroscopy

โœ Scribed by A.C. Legon; L.C. Willoughby

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
374 KB
Volume
95
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

Rotntional transitions of (HzO,H~~CI) and (H20.H3'CI) have been observed and ssisned in the frequency rm_ee 7-1s GHz_ Values of the rotational constants Bo + 12, and Bo -Co. the centrifugal distortion constzmts D~and DJK_ and the Cl nuclear quadrupole coupling constang %0 and xbb are reported for the vibrational ground state of both species. Argoments based on small spin-spin splittings resolved in some Cl nuclear quadrupole components lead to the conclusion that (HzO,HCl) has a pair of equivalent protons and is effectively planar in the zero-point state. Values of r0 (O-Cl) have been determined for the planar model in which the HCl molecule forms a hydrogen bond to the osygen atom of H20_ 'I';rblc I CI rwcIc;lr c111:1drulwlc coupling constanIs (x,,) and unperturLxxi romioml wsnsition frequencies (~0) in (HzO.HCl

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Previously only thermolyses at T 2 130'C had been investigated [3a,c]. [S] The spectroscopic characterization of 13 was carried out in an admixture with 7 and 12; the assignments ofthe skeletal atoms were based on the values for the corresponding 1-adamantyl compound, which was isolated in the pure