Hindered Rotation of Diatomic Molecules in Inert Gas Matrices
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Date
1992-06
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Addis Ababa University
Abstract
The hindered rotation of the diatomic molecuel Co in solid Ar matrix
is discussed by propesing the distortion of the octahedral symmetry of the
crystal field of the matrix in the vicinity of the impurity molecule to a
lower symmetry, in particular tetrahedral symmetry. The solutions of the
Schrodinger equation are obtained in general form using group theory analogous
to the well known Devonshire model.
Numerical calculations of the energy levels and heat capacity for Co
molecules in Ar are made for different strength of the crystal field. Qualitative
agreement with experimental data in the temperature range 0.5 - 10K
is achieved. Parameters characterizing the hindered rotation of Co molecule
in Ar are predicted
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Keywords
The Hindered rotation