Osmium octafluoride

Approximate geometry predicted computationally

Names
IUPAC name

Octafluoroosmium[1]

Other names

Osmium(VIII) fluoride

Identifiers

CAS Number

* 18432-81-0

3D model (JSmol)

* Interactive image

PubChem CID

* 57496620

InChI

* InChI=1S/8FH.Os/h8*1H;/q;;;;;;;;+8/p-8

Key: ZTSGTWBSMBQRNE-UHFFFAOYSA-F

SMILES

* F[Os](F)(F)(F)(F)(F)(F)F

Properties

Chemical formula

| OsF8
Molar mass | 342.22 g·mol−1
Structure

Crystal structure

| C2/c (4 GPa)
R3 (240 GPa)[2]
Related compounds

Related compounds

| Xenon octafluoride

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

Infobox references

Chemical compound

Osmium octafluoride is an inorganic chemical compound of osmium metal and fluorine with the chemical formula OsF8.[3][4] Some sources consider it to be a still hypothetical compound.[5] An early report of the synthesis of OsF8 was much later shown to be a mistaken identification of OsF6.[6] Theoretical analysis indicates OsF8 would have an approximately square antiprismatic molecular geometry.[7]

## Potential synthesis

[edit]

Rapid cooling of fluorine and osmium reaction products:[8]

Os + 4 F2 → OsF8

## References

[edit]

1. ^ "Octafluoroosmium".
2. ^ Lin, Jianyan; Du, Xin; Rahm, Martin; Yu, Hong; Xu, Haiyang; Yang, Guochun (25 March 2020). "Exploring the Limits of Transition-Metal Fluorination at High Pressures". Angewandte Chemie International Edition. 59 (23): 9155–9162\. doi:10.1002/anie.202002339. eISSN 1521-3773. ISSN 1433-7851. PMID 32150319. S2CID 212639781.
3. ^ Routledge German Dictionary of Chemistry and Chemical Technology Worterbuch Chemie und Chemische Technik: Vol 1: German-English. Routledge. 17 June 2014. p. 481\. ISBN 978-1-136-76231-4. Retrieved 30 March 2023.
4. ^ Macintyre, Jane E. (23 July 1992). Dictionary of Inorganic Compounds. CRC Press. p. 3247\. ISBN 978-0-412-30120-9. Retrieved 30 March 2023.
5. ^ Haupt, Axel (22 March 2021). Organic and Inorganic Fluorine Chemistry: Methods and Applications. Walter de Gruyter GmbH & Co KG. p. 258\. ISBN 978-3-11-065933-7. Retrieved 30 March 2023.
6. ^ Riedel, S.; Kaupp, M. (30 Jul 2009). "The highest oxidation states of the transition metal elements". Coordination Chemistry Reviews. 253 (5–6): 606–624\. doi:10.1016/j.ccr.2008.07.014.5–6&rft.pages=606-624&rft.date=2009-07-30&rft_id=info:doi/10.1016/j.ccr.2008.07.014&rft.aulast=Riedel&rft.aufirst=S.&rft.au=Kaupp,+M.&rfr_id=info:sid/en.wikipedia.org:Osmium+octafluoride" class="Z3988">
7. ^ Riedel, Sebastian; Kaupp, Martin (2006). "Where Is the Limit of Highly Fluorinated High-Oxidation-State Osmium Species?". Inorg. Chem. 45 (26): 10497–10502\. doi:10.1021/ic061054y. PMID 17173405.
8. ^ Satya, Prakash (2013). Advanced Chemistry of Rare Elements. S. Chand Publishing. p. 612\. ISBN 978-81-219-4254-6. Retrieved 30 March 2023.

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Osmium compounds

Os(0)|

* Os(CO)5
* Os3(CO)12

Os(0,I)|

* H2Os3(CO)10

Os(I)|

* OsB
* OsI

Os(I,II)|

* Os2B3

Os(II)|

* OsB2
* OsBr2
* OsCl2
* OsP2
* OsI2

| Organoosmium(II) compounds|

* Os(C5H5)2
* OsHCl(CO)[P(C6H5)3]3

|

Os(III)|

* OsI3
* OsCl3
* OsBr3

Os(IV)|

* OsO2
* OsBr4
* OsCl4
* OsF

* OsI4 (hypothetical)
* H2OsCl6
* Na2OsCl6
* (NH4)2OsCl6
* [OsO(NH3)2](OH)2

Os(V)|

* OsF5
* OsCl5

Os(VI)|

* OsF6
* K2[OsO2(OH)4]
* [OsO2(NH3)4]Cl2

Os(VII)|

* OsF
7 (hypothetical)

Os(VIII)|

* OsO4
* OsS4
* K[OsO3N]
* OsF8 (hypothetical)

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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

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