Rhodium hexafluoride

Rhodium hexafluoride
Names
	IUPAC name rhodium(VI) fluoride
	Other names rhodium hexafluoride
Identifiers
CAS Number	13693-07-7;
3D model (JSmol)	Interactive image;
PubChem CID	20488757;
CompTox Dashboard (EPA)	DTXSID80608008 ;
	InChI Key: PDNXMXVYNVZBTD-UHFFFAOYSA-H; InChI=1/6FH.2Rh/h6*1H;;/q;;;;;;+6/p-6;
	SMILES F[Rh](F)(F)(F)(F)F;
Properties
Chemical formula	F6Rh
Molar mass	216.91 g/mol
Appearance	black crystalline solid
Density	3.71g/mL
Melting point	≈ 70 °C (158 °F; 343 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
	Infobox references

Rhodium hexafluoride, also rhodium(VI) fluoride, (RhF₆) is the inorganic compound of rhodium and fluorine. A black volatile solid,^[1] it is a highly reactive material, and a rare example of a rhodium(VI) compound. It is one of seventeen known binary hexafluoride.

Synthesis, structure, properties[]

Rhodium hexafluoride is prepared by reaction of rhodium metal with an excess of elemental fluorine:^[3]

Rh + 3 F₂ → RhF₆

The RhF₆ molecule has octahedral molecular geometry. Consistent with its d³ configuration, the six Rh–F bond lengths are equivalent, being 1.824 Å.^[2] It crystallises in an orthorhombic space group Pnma with lattice parameters of a = 9.323 Å, b = 8.474 Å, and c = 4.910 Å.

Like some other metal fluorides, RhF₆ is highly oxidizing. It attacks even glass even in the absence of water.^[3] It can even react with elemental oxygen.^[4]

References[]

^ ^a ^b ^c CRC Handbook of Chemistry and Physics, 90th Edition, CRC Press, Boca Raton, Florida, 2009, ISBN 978-1-4200-9084-0, Section 4, Physical Constants of Inorganic Compounds, p. 4-85.
^ ^a ^b Drews, T.; Supeł, J.; Hagenbach, A.; Seppelt, K. (2006). "Solid State Molecular Structures of Transition Metal Hexafluorides". Inorganic Chemistry. 45 (9): 3782–3788. doi:10.1021/ic052029f. PMID 16634614.
^ ^a ^b 《无机化学丛书》第九卷：锰分族、铁系、铂系 (in Chinese). 北京: 科学出版社. p. 478. ISBN 7-03-002238-6.
^ Riedel, Sebastian; Kaupp, Martin (2009). "The highest oxidation states of the transition metal elements" (PDF). Coordination Chemistry Reviews. Elsevier. 253 (5–6): 606–624. doi:10.1016/j.ccr.2008.07.014.^{[permanent dead link]}

External links[]

Rhodium hexafluoride at webelements.com.

[CRC_HANDBOOK_RhF6-1] CRC Handbook of Chemistry and Physics, 90th Edition, CRC Press, Boca Raton, Florida, 2009, ISBN 978-1-4200-9084-0, Section 4, Physical Constants of Inorganic Compounds, p. 4-85.

[D_BLOCK_XF6-2] Drews, T.; Supeł, J.; Hagenbach, A.; Seppelt, K. (2006). "Solid State Molecular Structures of Transition Metal Hexafluorides". Inorganic Chemistry. 45 (9): 3782–3788. doi:10.1021/ic052029f. PMID 16634614.

[wc-3] 《无机化学丛书》第九卷：锰分族、铁系、铂系 (in Chinese). 北京: 科学出版社. p. 478. ISBN 7-03-002238-6.

[4] Riedel, Sebastian; Kaupp, Martin (2009). "The highest oxidation states of the transition metal elements" (PDF). Coordination Chemistry Reviews. Elsevier. 253 (5–6): 606–624. doi:10.1016/j.ccr.2008.07.014.^{[permanent dead link]}

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Rhodium hexafluoride

Contents

Synthesis, structure, properties[]

References[]

Further reading[]

External links[]