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Rhenium(VI) chloride
Names
	Other names rhenium hexachloride
Identifiers
CAS Number	31234-26-1;
3D model (JSmol)	Interactive image;
ChemSpider	4321528;
PubChem CID	5148054;
CompTox Dashboard (EPA)	DTXSID601291531 ;
	InChI InChI=1S/6ClH.Re/h6*1H;/q;;;;;;+6/p-6 Key: GSGIQJBJGSKCDZ-UHFFFAOYSA-H;
	SMILES Cl[Re](Cl)(Cl)(Cl)(Cl)Cl;
Properties
Chemical formula	Cl6Re
Molar mass	398.91 g·mol−1
Appearance	black solid
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Rhenium(VI) chloride is the inorganic compound with the formula ReCl₆. It is a black paramagnetic solid. The molecules adopt an octahedral structure as seen in tungsten(VI) chloride.^[1]

Preparation and reactions

Rhenium(VI) chloride was first generated as a mixture by chlorination of Re films.^[2] Bulk samples can be prepared by combining rhenium hexafluoride with excess boron trichloride:

2 ReF₆ + 6 BCl₃ → ReCl₆ + 6 BF₂Cl

It is unstable at room temperature with respect to rhenium(V) chloride:

2 ReCl₆ → [ReCl₅]₂ + Cl₂

References

^ Tamadon, Farhad; Seppelt, K. (2012). "The Elusive Halides VCl₅, MoCl₆, and ReCl₆". Angewandte Chemie International Edition. 52 (2): 767–769. doi:10.1002/anie.201207552. PMID 23172658.
^ Colton, R. (1962). "Rhenium Hexachloride". Nature. 194 (4826): 374–375. Bibcode:1962Natur.194..374C. doi:10.1038/194374a0. S2CID 4166446.