Manganese trioxide fluoride

Names
Other names

Permanganyl fluoride

Identifiers

CAS Number

* 15586-97-7

3D model (JSmol)

* Interactive image

ChemSpider |

* 57450402

InChI

* InChI=1S/FH.Mn.3O/h1H;;;;/q;+1;;;/p-1

Key: JWSFKFAINKAKTR-UHFFFAOYSA-M

SMILES

* O=[Mn](F)(=O)=O

Properties

Chemical formula

| FMnO3
Molar mass | 121.933 g·mol−1
Appearance  | green liquid
Density | 6.042 g/cm3
Melting point |  −45 °C (−49 °F; 228 K)
Boiling point |  decomposition above its melting point

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

Infobox references

Manganese trioxide fluoride is an inorganic compound with the formula MnO
3F. A green diamagnetic liquid, the compound has no applications, but it is of some academic interest as a rare example of a metal trioxide fluoride.

The compound was detected in the 1880s but was only purified and crystallized much more recently.[1] It can be prepared by hydrofluoric acid and potassium permanganate:

KMnO
4 \+ 2HF → MnO
3F + KF + H

MnO
3F crystallizes as a monomer, as confirmed by X-ray crystallography. The molecules are tetrahedral with Mn-O and Mn-F distances of 1.59 and 1.72 Å, respectively.

In contrast with MnO
3F, TcO
3F and ReO
3F have more complex structures as solids. The Re compound crystallizes as chains or rings consisting of fluoride-bridge octahedra. TcO
3F crystallizes as dimers with fluoride bridges.[2] The rhenium compound also forms stable adducts with Lewis bases,[3] whereas the MnO
3F is unstable in the presence of Lewis bases.

## References

1. ↑ Schmidbaur, Hubert; Schwarz, W. H. Eugen (2021). "Permanganyl Fluoride: A Brief History of the Molecule MnO3F and of Those Who Cared for It". Chemistry – A European Journal 27 (23): 6848–6859. doi:10.1002/chem.202004759. PMID 33219726.
2. ↑ Supeł, Joanna; Abram, Ulrich; Hagenbach, Adelheid; Seppelt, Konrad (2007). "Technetium Fluoride Trioxide, TcO3F, Preparation and Properties". Inorganic Chemistry 46 (14): 5591–5595. doi:10.1021/ic070333y. PMID 17547395.
3. ↑ Supeł, Joanna; Marx, Rupert; Seppelt, Konrad (2005). "Preparation and Structure of Rhenium Fluoride Trioxide ReO3F, and the Polymorphism of Rhenium Trifluoride Dioxide, ReO2F3". Zeitschrift für anorganische und allgemeine Chemie 631 (15): 2979–2986. doi:10.1002/zaac.200500239.

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Manganese compounds

* MnO
* Mn3O4
* Mn5O8
* MnS
* MnS2
* MnSO4
* MnSe2
* MnSe
* MnTe
* Mn(NO3)2
* MnCO3
* MnCl2
* MnCl3
* MnCl4
* MnF2
* MnBr2
* MnI2
* MnTiO3
* MnMoO4
* Mn(CH3COO)2
* Mn2O3
* MnF3
* K6Mn2O6
* MnO2
* Mn(OH)2
* MnO3
* K3MnO4
* MnF4
* Na2MnO4
* K2MnO4
* Mn2O7
* NaMnO4
* KMnO4
* NH4MnO4
* AgMnO4
* Ca(MnO4)2
* Ba(MnO4)2
* MnH(CO)5
* Mn2(CO)10

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