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Syntheses, Raman spectroscopy and crystal structures of alkali hexa-fluorido-rhenates(IV) revisited.

ABSTRACT: The A2[ReF6] (A = K, Rb and Cs) salts are isotypic and crystallize in the trigonal space group type P [Formula: see text] m1, adopting the K2[GeF6] structure type. Common to all A2[ReF6] structures are slightly distorted octa-hedral [ReF6]2- anions with an average Re-F bond length of 1.951?(8)?Å. In those salts, symmetry lowering on the local [ReF6]2- anions from Oh (free anion) to D3d (solid-state structure) occur. The distortions of the [ReF6]2- anions, as observed in their Raman spectra, are correlated to the size of the counter-cations.

SUBMITTER: Louis-Jean J

PROVIDER: S-EPMC5947479 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature

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Syntheses, Raman spectroscopy and crystal structures of alkali hexa-fluorido-rhenates(IV) revisited.

Louis-Jean James J Mariappan Balasekaran Samundeeswari S Smith Dean D Salamat Ashkan A Pham Chien Thang CT Poineau Frederic F

Acta crystallographica. Section E, Crystallographic communications 20180406 Pt 5

The A2[ReF6] (A = K, Rb and Cs) salts are isotypic and crystallize in the trigonal space group type P [Formula: see text] m1, adopting the K2[GeF6] structure type. Common to all A2[ReF6] structures are slightly distorted octa-hedral [ReF6]2- anions with an average Re-F bond length of 1.951 (8) Å. In those salts, symmetry lowering on the local [ReF6]2- a ...[more]

PMID: 29850083

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