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High-Resolution Infrared and Millimeter-Wave Study of the v3 = 1 State of HSiF3 and DSiF3

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

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
183 KB
Volume
200
Category
Article
ISSN
0022-2852

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✦ Synopsis

Millimeter-wave spectra of HSiF 3 and DSiF 3 in the v 3 ϭ 1 excited state have been measured from 100 to 490 GHz. Infrared spectra have been recorded in the 3 regions, 0 424.0301 and 420.9320 cm Ϫ1 in HSiF 3 and DSiF 3 , respectively, with a resolution of 2.4 ϫ 10 Ϫ3 cm Ϫ1 . Since in both species the parameters ␣ 3 B and ␣ 3 C have very similar values, no K structure could be resolved in the Q P and Q R clusters for low-to-medium K values. For high J the effect of the ground state D JK term more and more dominates and spreads the J clusters into opposite directions such that medium-to-high K components, particularly those with K ϭ 3p, are resolved. Rotational and infrared data have been fitted together using a model up to sextic centrifugal distortion constants. No perturbations were indicated. Hot bands ( 3 ϩ n 6 )-n 6 with n ϭ 1, 2, and 3 have been detected and analyzed.

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