Abstract
The infrared and Raman spectra of solid K 2NiF 6 was studied. All the active frequencies ν 1, ν 2, ν 3, ν 4, and ν 5 belonging to the isolated ion point group ( O h ) were ascertained. Several lattice modes were also found in the Raman spectrum. Force constant calculations were carried out for both the general quadratic potential function and the Urey-Bradley potential and the results are compared with those for a similar tetravalent hexafluoro complex K 2PtF 6.
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