Vibrational spectra of hexahalogenometallates. Part II. The infra-red spectra of some cubic and orthorhombic perovskite fluorides

A. P. Lane; D. W. A. Sharp; J. M. Barraclough; D. H. Brown; D. A. Paterson

doi:10.1039/J19710000094

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Journal of the Chemical Society A: Inorganic, Physical, Theoretical

Issue 0, 1971

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Vibrational spectra of hexahalogenometallates. Part II. The infra-red spectra of some cubic and orthorhombic perovskite fluorides

A. P. Lane , D. W. A. Sharp , J. M. Barraclough , D. H. Brown and D. A. Paterson

J. Chem. Soc. A, 1971, 94-100

DOI: 10.1039/J19710000094

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Abstract
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The i.r. spectra of some cubic perovskite fluorides of formulae KMF₃(M = Mg, Mn, Fe, Co, Ni, and Zn) and RbMF₃(M = Mn, Co, and Zn) have been recorded in the region 40–600 cm^–1; from the observed frequencies, a set of five force constants have been calculated. The i.r. spectrum of KMnF₃ recorded at liquid-nitrogen temperature is discussed in terms of the reported structural change from a cubic to an orthorhombic or tetragonal phase which occurs at 184 K. The i.r. spectra of the orthorhombic perovskite fluorides NaMF₃(M = Mg, Mn, Co, Ni, and Zn) are reported from 40 to 600 cm^–1 and the number of observed bands is in good agreement with the predictions of Factor Group Analysis.

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A. P. Lane
D. W. A. Sharp
J. M. Barraclough
D. H. Brown
D. A. Paterson

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Journal of the Chemical Society A: Inorganic, Physical, Theoretical

Vibrational spectra of hexahalogenometallates. Part II. The infra-red spectra of some cubic and orthorhombic perovskite fluorides

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