Potassium hexafluororhenate

Potassium hexafluororhenate
Names
IUPAC name
dipotassium; hexafluoro rhenium(2-)
Other names
Potassium hexafluororhenate(IV), dipotassium hexafluororhenate
Identifiers
3D model (JSmol)
  • InChI=1S/6FH.2K.Re/h6*1H;;;/q;;;;;;2*+1;+4/p-6
    Key: RLEITDJIBAVHKH-UHFFFAOYSA-H
  • [K+].[F-][Re+4]([F-])([F-])([F-])([F-])[F-]
Properties
F6K2Re
Molar mass 378.394 g·mol−1
Appearance pale pink crystals
Density 4.33 g/cm3[1]
Hazards
GHS labelling:
GHS07: Exclamation mark
Warning
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

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. ^ a b "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.

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