Title of article :
An unexpected rhenium(IV)–rhenium(VII) salt: [Co(NH3)6]3[ReVIIO4][ReIVF6]4·6H2O
Author/Authors :
Louis–Jean, James Department of Chemistry and Biochemistry - University of Nevada Las Vegas, USA , Mariappan Balasekaran, Samundeeswari Department of Chemistry and Biochemistry - University of Nevada Las Vegas, USA , Hagenbach, Adelheid Department of Chemistry and Biochemistry - University of Nevada Las Vegas, USA , Poineau, Frederic Department of Chemistry and Biochemistry - University of Nevada Las Vegas, USA
Abstract :
The title hydrated salt, tris[hexaamminecobalt(III)] tetraoxidorhenate(VII)
trakis[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.
Keywords :
crystal structure , hexamine-cobalt , perrhenate , hexafluororhenate
Journal title :
Acta Crystallographica Section E: Crystallographic Communications
