Rhenium tetrafluoride

Rhenium tetrafluoride
Names
	Other names Rhenium(IV) fluoride
Identifiers
CAS Number	149852-31-3;
3D model (JSmol)	Interactive image;
ChemSpider	57568799;
PubChem CID	18469520;
CompTox Dashboard (EPA)	20594153;
	InChI InChI=1S/4FH.Re/h4*1H;/p-4 Key: IZVAOCKUNBYXSU-UHFFFAOYSA-J;
	SMILES [F-].[F-].[F-].[F-].[Re];
Properties
Chemical formula	F4Re
Molar mass	262.201 g·mol−1
Appearance	blue crystals
Density	5.38 g/cm3
Melting point	124.5 °C (256.1 °F; 397.6 K)
Boiling point	795 °C (1,463 °F; 1,068 K)
Structure
Crystal structure	tetragonal
Related compounds
Related compounds	Osmium tetrafluoride
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Rhenium tetrafluoride is a binary inorganic compound of rhenium and fluorine with the chemical formula ReF₄.[1]

Synthesis

Rhenium tetrafluoride can be made by the reduction of rhenium hexafluoride with hydrogen, rhenium, or sulfur dioxide:[2][3]

ReF₆ + H₂ → 2ReF₄ + 2HF

2ReF₆ + Re → 3ReF₄

ReF₆ + SO₂ → ReF₄ + SO₂F₂

Rhenium tetrafluoride forms blue crystals[4] of tetragonal structure, cell parameters a = 1.012 nm, c = 1.595 nm.

Rhenium tetrafluoride reacts with water, and corrodes glass when heated.

WADC Technical Report. Wright Air Development Division, Air Research and Development Command, United States Air Force. 1957. p. 70. Retrieved 6 April 2023.
Kemmitt, R. D. W.; Peacock, R. D. (26 January 2016). The Chemistry of Manganese, Technetium and Rhenium: Pergamon Texts in Inorganic Chemistry. Elsevier. p. 918. ISBN 978-1-4831-8762-4. Retrieved 6 April 2023.
Druce, J. G. F.; Druce, Gerald (1948). Rhenium: Dvi-manganese, the Element of Atomic Number 75. CUP Archive. p. 50. Retrieved 6 April 2023.
"WebElements Periodic Table » Rhenium » rhenium tetrafluoride". webelements.com. Retrieved 6 April 2023.

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