Acta Crystallographica Section E Crystallographic Communications
International Union of Crystallography
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The title hydrated salt, tris[hexaamminecobalt(III)] tetraoxidorhenate(VII) tetrakis[hexafluoridorhenate(IV)] hexahydrate, arose unexpectedly due to possible contamination of the K2ReF6 starting material with KReO4. It consists of octahedral [Co(NH3)6] 3+ cation (Co1 site symmetry 1), tetrahedral [ReVIIO4] anions (Re site symmetry 1) and octahedral [ReIVF6] 2 anions (Re site symmetries 1and 3). The [ReF6] 2 octahedral anions (mean Re—F = 1.834 A˚ ), [Co(NH3)6] 3+ octahedral cations (mean Co—N = 1.962 A˚ ), and the [ReO4] tetrahedral anion (mean Re—O = 1.719 A˚ ) are slightly distorted. A network of N—HF hydrogen bonds consolidates the structure. The crystal studied was refined as a two-component twin.
Crystal structure; Hexamine-cobalt; Perrhenate; Hexafluororhenate
Biochemistry, Biophysics, and Structural Biology | Chemistry
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Mariappan Balasekaran, S.,
An Unexpected Rhenium(IV)–Rhenium(VII) Salt: [Co(NH3)6]3[ReVIIO4][ReIVF6]46H2O.
Acta Crystallographica Section E Crystallographic Communications, 75(8),
International Union of Crystallography.