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An unexpected rhenium(IV)–rhenium(VII) salt: [Co(NH 3 ) 6 ] 3 [Re VII O 4 ][Re IV F 6 ] 4 ·6H 2 O

Journal Article · · Acta Crystallographica. Section E, Crystallographic Communications
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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 K 2 ReF 6 starting material with KReO 4 . It consists of octahedral [Co(NH 3 ) 6 ] 3+ cation (Co1 site symmetry 1), tetrahedral [Re VII O 4 ] − anions (Re site symmetry 1) and octahedral [Re IV F 6 ] 2− anions (Re site symmetries 1and \overline{3}). The [ReF 6 ] 2− octahedral anions (mean Re—F = 1.834 Å), [Co(NH 3 ) 6 ] 3+ octahedral cations (mean Co—N = 1.962 Å), and the [ReO 4 ] − tetrahedral anion (mean Re—O = 1.719 Å) are slightly distorted. A network of N—H...F hydrogen bonds consolidates the structure. The crystal studied was refined as a two-component twin.

Sponsoring Organization:
USDOE
Grant/Contract Number:
NA0003180
OSTI ID:
1617940
Journal Information:
Acta Crystallographica. Section E, Crystallographic Communications, Journal Name: Acta Crystallographica. Section E, Crystallographic Communications Journal Issue: 8 Vol. 75; ISSN ACSECI; ISSN 2056-9890
Publisher:
International Union of Crystallography (IUCr)Copyright Statement
Country of Publication:
United Kingdom
Language:
English

References (12)

The Crystal Structure of Rubidium and Cesium Hexachloro-, -bromo-, and -iodorhenates(IV) journal June 1964
Rheniumfluoride (insbesondere ReF6, ReOF4, ReO2F2, ReF4 und K2ReF6) journal August 1934
Hexaammine-cobalt(III) pertechnetate: preparation, structure and solubility journal September 2016
CCCCXLVIII.—Potassium rheni-iodide journal January 1931
ShelXle : a Qt graphical user interface for SHELXL journal November 2011
Comparison of silver and molybdenum microfocus X-ray sources for single-crystal structure determination journal January 2015
Crystal structure refinement with SHELXL journal January 2015
SHELXT – Integrated space-group and crystal-structure determination journal January 2015
Syntheses, Raman spectroscopy and crystal structures of alkali hexafluoridorhenates(IV) revisited journal April 2018
Synthesis and structure investigation of Co(III) complex salts with the perrhenate anion journal February 2012
A refinement of the crystal structures of K 2 ReCl 6 , K 2 ReBr 6 , and K 2 PtBr 6 journal April 1970
Comparative Interpretation of Absorption Spectra of Technetium (IV) and Rhenium (IV) Hexahalides journal January 1965

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