Iridium hexafluoride

Iridium hexafluoride  Iridium(VI) fluoride

Names
IUPAC name

iridium(VI) fluoride

Other names

iridium hexafluoride

Identifiers

CAS Number

* 7783-75-7 Y

3D model (JSmol)

* Interactive image

ChemSpider |

* 10323846

ECHA InfoCard | 100.029.113

PubChem CID

* 3014587

UNII |

* UP14U33TGX Y

InChI

* InChI=1S/6FH.Ir/h6*1H;/q;;;;;;+6/p-6

Key: JQAZQSHUPWSSPF-UHFFFAOYSA-H

* InChI=1/6FH.Ir/h6*1H;/q;;;;;;+6/p-6/rF6Ir/c1-7(2,3,4,5)6

Key: JQAZQSHUPWSSPF-VYYYRSGCAJ

SMILES

* F[Ir](F)(F)(F)(F)F

Properties

Chemical formula

| IrF6
Molar mass | 306.22 g/mol
Appearance  | yellow crystalline solid[1]
Density | 5.11g/mL[2]
Melting point | 44 °C (111 °F; 317 K)[1]
Boiling point | 53.6 °C (128.5 °F; 326.8 K)[1]
Solubility | soluble in HF
Related compounds

Other cations

| rhodium hexafluoride
osmium hexafluoride
platinum hexafluoride

Related compounds

| iridium(V) fluoride

Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

N verify (what is YN ?)

Infobox references

Chemical compound

Iridium hexafluoride, also iridium(VI) fluoride, (IrF6) is a compound of iridium and fluorine and one of the seventeen known binary hexafluorides. It is one of only a few compounds with iridium in the oxidation state +6.

## Synthesis

[edit]

Iridium hexafluoride is made by a direct reaction of iridium metal in an excess of elemental fluorine gas at 300 °C. However, it is thermally unstable and must be frozen out of the gaseous reaction mixture to avoid dissociation.

Ir \+ 3 F
2 → IrF

## Description

[edit]

Iridium hexafluoride is a yellow crystalline solid that melts at 44 °C and boils at 53.6 °C.[1] The solid structure measured at −140 °C is orthorhombic space group Pnma. Lattice parameters are a = 9.411 Å, b = 8.547 Å, and c = 4.952 Å. There are four formula units (in this case, discrete molecules) per unit cell, giving a density of 5.11 g·cm−3.[2]

The IrF6 molecule itself (the form important for the liquid or gas phase) has octahedral molecular geometry, which has point group (Oh). The Ir–F bond length is 1.833 Å.[2]

Calculations suggest that fluorine might react with iridium hexafluoride at 39 GPa to form IrF8.[3]

## References

[edit]

1. ^ a b c d 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.
2. ^ a b c T. Drews, J. Supeł, A. Hagenbach, K. Seppelt: "Solid State Molecular Structures of Transition Metal Hexafluorides", in: Inorganic Chemistry, 2006, 45 (9), S. 3782–3788; doi:10.1021/ic052029f; PMID 16634614.
3. ^ Lin, Jianyan; Zhao, Ziyuan; Liu, Chunyu; Zhang, Jing; Du, Xin; Yang, Guochun; Ma, Yanming (2019-03-13). "IrF8 Molecular Crystal under High Pressure". Journal of the American Chemical Society. 141 (13). American Chemical Society (ACS): 5409–5414\. doi:10.1021/jacs.9b00069. ISSN 0002-7863. PMID 30864432. S2CID 76664353.

## Further reading

[edit]

* Gmelins Handbuch der anorganischen Chemie, System Nr. 67, Iridium, Supplement Volume 2, pp. 99–102.

## External links

[edit]

* Iridium hexafluoride at webelements.com.

* v
* t
* e

Binary hexafluorides

Known binary hexafluorides|

| Chalcogen binary hexafluorides|

* SF6
* SeF6
* TeF6
* PoF6

|

Noble gas binary hexafluorides|

* XeF6

Transition metal binary hexafluorides|

* MoF6
* TcF6
* RuF6
* RhF6
* WF6
* ReF6
* OsF6
* IrF6
* PtF6

Actinide binary hexafluorides|

* UF6
* NpF6
* PuF6

Predicted binary hexafluorides|

| Noble gas binary hexafluorides|

* KrF6
* RnF

|

Transition metal binary hexafluorides|

* CrF6
* PdF6
* AuF6

Actinide binary hexafluorides|

* AmF6
* CmF6
* EsF6

* v
* t
* e

Iridium compounds

Iridium(0)|

* Ir4(CO)12

Iridium(I)|

| Organoiridium(I)|

* IrC8H12C5H5NP(C6H11)3PF6
* IrClCO(P(C6H5)3)2
* KIrI2(CO)2

|

Iridium(II)|

* IrCl2

Iridium(III)|

* IrBr3
* IrCl3
* IrF

* IrI3
* Ir2S3
* Ir(O2C5H7)3
* (NH

3IrCl

* Ir(CN)3−

* Ir2O3

| Organoiridium(III)|

* (IrClC5(CH3)5)2Cl2
* Ir(C9H11)3

|

Iridium(IV)|

* IrBr

* IrF4
* IrCl4
* IrI

* IrO2
* IrS2
* (NH4)2[IrCl6]
* Li2IrO3

Iridium(V)|

* IrF5

Iridium(VI)|

* IrF6
* Sr2MgIrO6
* Sr2CaIrO6
* Ir(O2)O2

Iridium(VII)|

* IrF7

Iridium(VIII/IX)|

* IrO4
* IrO+4

* v
* t
* e

Fluorine compounds

* v
* t
* e

Salts and covalent derivatives of the fluoride ion

| HF |  |  |  | ?HeF2

|
|
|
|

LiF | BeF2 | BF
BF3
B2F4
+BO3 | CF4
CxFy
+CO3 | NF3
FN3
N2F2

N2F4
NF2
?NF5

+NO3 | OF2
O2F2

O3F2
O4F2
?OF4 | F2 | Ne
NaF | MgF2 | AlF
AlF3 | SiF4 | P2F4
PF3
PF5
+PO4 | S2F2
SF2
S2F4
SF3
SF4
S2F10
SF6
+SO4 | ClF
ClF3
ClF5 | ?ArF2
?ArF4
KF | CaF
CaF2 |  | ScF3 | TiF2
TiF3
TiF4 | VF2
VF3
VF4
VF5 | CrF2
CrF3
CrF4
CrF5
?CrF6 | MnF2
MnF3
MnF4
?MnF5 | FeF2
FeF3
FeF4 | CoF2
CoF3
CoF4 | NiF2
NiF3
NiF4 | CuF
CuF2
?CuF3 | ZnF2 | GaF2
GaF3 | GeF2
GeF4 | AsF3
AsF5 | Se2F2
SeF4
SeF6
+SeO3 | BrF
BrF3
BrF5 | KrF2
?KrF4
?KrF6
RbF | SrF
SrF2 |  | YF3 | ZrF2
ZrF3
ZrF4 | NbF4
NbF5 | MoF4
MoF5
MoF6 | TcF4
TcF

TcF6 | RuF3
RuF

RuF5
RuF6 | RhF3
RhF4
RhF5
RhF6 | PdF2
Pd[PdF6]
PdF4
?PdF6 | Ag2F
AgF
AgF2
AgF3 | CdF2 | InF
InF3 | SnF2
SnF4 | SbF3
SbF5 | TeF4
?Te2F10
TeF6
+TeO3 | IF
IF3
IF5
IF7
+IO3 | XeF2
XeF4
XeF6
?XeF8
CsF | BaF2 |  | LuF3 | HfF4 | TaF5 | WF4
WF5
WF6 | ReF4
ReF5
ReF6
ReF7 | OsF4
OsF5
OsF6
?OsF

?OsF
8 | IrF2
IrF3
IrF4
IrF5
IrF6 | PtF2
Pt[PtF6]
PtF4
PtF5
PtF6 | AuF
AuF3
Au2F10
?AuF6
AuF5•F2 | Hg2F2
HgF2
?HgF4 | TlF
TlF3 | PbF2
PbF4 | BiF3
BiF5 | PoF2
PoF4
PoF6 | AtF
?AtF3
?AtF5 | RnF2
?RnF

?RnF

FrF  | RaF2 |  | LrF3 | Rf  | Db  | Sg  | Bh  | Hs  | Mt  | Ds  | Rg  | Cn  | Nh  | Fl  | Mc  | Lv  | Ts  | Og
| ↓  |  |
| LaF3 | CeF3
CeF4 | PrF3
PrF4 | NdF2
NdF3
NdF4 | PmF3 | SmF
SmF2
SmF3 | EuF2
EuF3 | GdF3 | TbF3
TbF4 | DyF2
DyF3
DyF4 | HoF3 | ErF3 | TmF2
TmF3 | YbF2
YbF3
AcF3 | ThF2
ThF3
ThF4 | PaF4
PaF5 | UF3
UF4
UF5
UF6 | NpF3
NpF4
NpF5
NpF6 | PuF3
PuF4
PuF5
PuF6 | AmF2
AmF3
AmF4
?AmF6 | CmF3
CmF4
?CmF6 | BkF3
BkF
4 | CfF3
CfF4 | EsF3
EsF4
?EsF6 | Fm  | MdF3 | No

PF−6, AsF−6, SbF−6 compounds|

* AgPF6
* KAsF6
* LiAsF6
* NaAsF6
* HPF6
* HSbF6
* NH4PF6
* LiSbF6
* KPF6
* KSbF6
* LiPF6
* NaPF6
* NaSbF6
* TlPF6

AlF2−5, AlF3−6 compounds|

* (NH4)3[AlF6]
* Cs2AlF5
* Li3AlF6
* K3AlF6
* Na3AlF6

chlorides, bromides, iodides
and pseudohalogenides|

* BaClF
* SiIBrClF
* BrSO3F
* Br(SO3F)3
* CFN
* ClFO2
* PbFBr
* PbFCl
* SrFCl

SiF2−6, GeF2−6 compounds|

* BaSiF6
* BaGeF6
* (NH4)2SiF6
* Na2[SiF6]
* K2[SiF6]
* Li2GeF6
* Li2SiF6

Oxyfluorides|

* AcOF
* BrOF3
* BrO2F
* ErOF
* HoOF
* BrO3F
* NdOF
* LaOF
* SmOF
* TbOF
* ThOF2
* VOF

* TcO

* PrOF
* PuOF
* WOF

* YOF
* ClOF3
* ClO2F3

Organofluorides|

* CBrF3
* CBr2F2
* CBr3F
* CClF3
* CCl2F2
* CCl3F
* CF2O
* CF3I
* CHF3
* CH2F2
* CH3F
* C2Cl3F3
* C2H3F
* C6H5F
* C7H5F3
* C15F33N
* C3H5F
* C6H11F

with transition metal,
lanthanide, actinide, ammonium|

* VOF3
* CrOF4
* CrF2O2
* NH4F
* (NH4)3CrF6
* (NH4)3GaF6
* (NH4)2GeF6
* (NH4)3FeF6
* (NH4)3InF6
* NH4NbF6
* (NH4)2SnF6
* NH4TaF6
* (NH4)3VF6
* (NH4)2ZrF6
* CsXeF7
* Li2SnF6
* Li2TiF6
* LiWF6
* Li2ZrF6
* K2TiF6
* Rb2TiF6
* Na2TiF6
* Na2ZrF6
* K2NbF7
* K2TaF7
* K2ZrF6
* UO2F2

nitric acids|

* FNO
* FNO2
* FNO3

bifluorides|

* KHF2
* NaHF2
* NH4HF2

thionyl, phosphoryl,
and iodosyl|

* FN3O2S
* F2OS
* F3OP
* PSF3
* IOF3
* IO3F
* F2O6S2
* ISO3F
* IOF5
* IO2F
* IO2F3

Chemical formulas
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