Potassium hexafluororhenate

Potassium hexafluororhenate

Names
IUPAC name dipotassium; hexafluoro rhenium(2-)
Other names Potassium hexafluororhenate(IV), dipotassium hexafluororhenate
Identifiers
CAS Number	16962-12-2
3D model (JSmol)	Interactive image
InChI InChI=1S/6FH.2K.Re/h6*1H;;;/q;;;;;;2*+1;+4/p-6 Key: RLEITDJIBAVHKH-UHFFFAOYSA-H
SMILES [K+].[F-][Re+4]([F-])([F-])([F-])([F-])[F-]
Properties
Chemical formula	F6K2Re
Molar mass	378.394 g·mol−1
Appearance	pale pink crystals
Density	4.33 g/cm3 [1]
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Potassium hexafluororhenate is an inorganic chemical compound with the chemical formula K₂ReF₆. ^[2]

Synthesis

The compound can be prepared by reacting K₂ReI₆ with potassium fluoride, hydrogen iodide mixture. ^[3]

Also it can be formed by reacting K₂ReI₆ or K₂ReCl₆ with KHF₂. ^[4]

Physical properties

The compound forms pale pink crystals of the trigonal system, space group P3m1. ^{[5] [1]} The crystals are of K₂GeF₆-type. ^[6]

References

1. "K2ReF6: mp-7824". Materials Project . Retrieved 28 August 2024.
2. Burgess, J.; Morton, N.; Peacock, R.D. (March 1978). "Enthalpies of solution of potassium hexafluororhenate(IV) and of potassium hexafluororuthenate(IV); single ion hydration enthalpies of the hexafluororhenate(IV) and hexafluororuthenate(IV) anions" . Journal of Fluorine Chemistry. 11 (3–4): 197–202. Bibcode:1978JFluC..11..197B. doi:10.1016/s0022-1139(00)82440-9 . Retrieved 28 August 2024.
3. Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3230. ISBN   978-0-412-30120-9 . Retrieved 28 August 2024.
4. Kemmitt, R. D. W.; Peacock, R. D. (6 June 2016). The Chemistry of Manganese, Technetium and Rhenium: Pergamon Texts in Inorganic Chemistry. Elsevier. p. 969. ISBN   978-1-4831-3806-0 . Retrieved 28 August 2024.
5. Donnay, Joseph Désiré Hubert (1973). Crystal Data: Inorganic compounds. National Bureau of Standards. p. H-62. Retrieved 28 August 2024.
6. Clark, G. R.; Russell, D. R. (15 March 1978). "Potassium hexafluororhenate(IV)" . Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry . 34 (3): 894–895. Bibcode:1978AcCrB..34..894C. doi:10.1107/S0567740878004264. ISSN   0567-7408 . Retrieved 28 August 2024.