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High-Resolution Infrared and Millimeter-Wave Study of the Fermi-Coupled v2 = 1 and v3 = 2 States of DSiF3

✍ Scribed by H. Bürger; E.B. MKadmi; J. Cosléou; L. Margulès; J. Demaison

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
160 KB
Volume
205
Category
Article
ISSN
0022-2852

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✦ Synopsis

The 2 ( eff. 854.841 cm Ϫ1 ) and 2 3 infrared bands ( eff. 840.083 cm Ϫ1 ) of DSiF 3 have been studied with a resolution of 2.5 ϫ 10 Ϫ3 cm Ϫ1 . Moreover, millimeter-wave transitions in the v 2 ϭ 1 and v 3 ϭ 2 states up to JЉ ϭ 33 have been measured. The assignments and fit of the poorly resolved, compressed cluster-type 2 3 IR transitions have been confirmed by a simultaneous study of the 2 3 -3 band. The constant W ϭ 5.116 cm Ϫ1 of the Fermi interaction between the v 2 ϭ 1 and v 3 ϭ 2 levels has been determined from frequency effects which are in agreement with relative intensities of the 2 and 2 3 bands. The deperturbed (B 0 Ϫ B v ) and (C 0 Ϫ C v ) values of the states involved agree with their ab initio predictions within 7% in the worst case.

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