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A Breakdown of the Watson-Type Hamiltonian for Some Asymmetric Top Molecules

✍ Scribed by S. Urban; K.M.T. Yamada


Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
421 KB
Volume
160
Category
Article
ISSN
0022-2852

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✦ Synopsis


The published ground state molecular parameters of diazomethane and ketene suggest a breakdown of the standard Watson-type rotational Hamiltonian due to resonant interactions between the ground state rotational levels and some levels in an excited vibrational state. It is shown that the effective rotational Hamiltonian in its standard power-series expansion converges only within a limited range of rotational quantum numbers. For given magnitudes of centrifugal distortion parameters (C_{s}^{\alpha \beta \beta}), the range of convergence is determined by the relative values of rotational constants and normal frequencies. (c) 1993 Academic Press. Inc.


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