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Force constants of Tl₂F₂, Tl₂Cl₂; Force fields for Tl₂X₂ (X=F, Cl); thallous halide

Electron diffraction data have been used as a constraint in the determination of force field for Tl₂F₂ having planar rhombic structure. The L-F approximation method, recently given by us, has also been applied to evaluate force constants for thallous halide dimers,e.g. T1₂F₂ and T1₂Cl₂. The results have been compared with the available experimental data in order to check the validity of the present work. It is concluded that non-bond experimental mean amplitudeU₁..._Tl for Tl₂F₂ is capable of fixing the force field and L-F approximation gives reasonably good force fields for the two thallous halide dimers now under study.

D K Sharma¹ U P Verma¹ A N Pandey¹ V Kumar^{1 2}

1. Molecular Spectroscopy Research Laboratory, Department of Physics, Meerut College, Meerut - 250001
2. M.M. College, Modinagar - 201204

Published

January 1977

Manuscript received

17 June 1976

Manuscript revised

23 August 1976