Manganese(II) molybdate

Short description: Inorganic compound

Manganese(II) molybdate

Names
IUPAC name

Manganese(2+) molybdate

Identifiers

CAS Number

* 14013-15-1

3D model (JSmol)

* Interactive image

EC Number |

* 237-823-1

PubChem CID

* 84155

InChI

* InChI=1S/Mn.Mo.4O/q+2;;;;2*-1

Key: QYZFLCQIQOHNTP-UHFFFAOYSA-N

SMILES

* [O-][Mo](=O)(=O)[O-].[Mn+2]

Properties

Chemical formula

| MnMoO4
Molar mass | 214.876 g/mol (anhydrous)
232.901 g/mol (monohydrate)
Appearance  | white-yellow to beige crystals or powder [1]
Density | 4.02 g/cm3
Melting point |  1,130 °C (2,070 °F; 1,400 K)

Solubility in water

| insoluble

Refractive index (nD)

| 2.11
Hazards
NFPA 704 (fire diamond)  |

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

Infobox references

Tracking categories (test):

* SizeSet

Manganese(II) molybdate is an inorganic compound with the chemical formula MnMoO4. α-MnMoO4 has a monoclinic crystal structure.[2] It is also antiferromagnetic at low temperatures.[3]

## Synthesis

Manganese(II) molybdate can be prepared through a double displacement reaction between sodium molybdate and manganese sulphate:[1]

Na2MoO4 \+ MnSO4 → Na2SO4 \+ MnMoO4

Manganese(II) molybdate has minimal solubility in water and will form a white-yellow precipitate which turns beige upon being refluxed.[1] The precipitate can then be filtered from solution, which gives the monohydrate (MnMoO4·H2O); heating to 360 °C then provides the anhydrous salt.[1]

Manganese(II) molybdate may also be prepared by heating various manganese oxides and molybdenum trioxide to 700 °C.[4]

## Applications

MnMoO4 has been used as active material in electrodes for aqueous supercapacitors[2][5] due to fast pseudocapacitive redox reactions, and as catalyst for hydrogen evolution.[5]

## References

1. ↑ 1.0 1.1 1.2 1.3 Clearfield, A.; Moini, A.; Rudolf, P. R. (1985-12-01). "Preparation and Structure of Manganese Molybdates". Inorganic Chemistry 24 (26): 4606–4609. doi:10.1021/ic00220a035.
2. ↑ 2.0 2.1 "Synthesis and Characterization of Manganese Molybdate for Symmetric Capacitor Applications (PDF Download Available)" (in en). https://www.researchgate.net/publication/268809383.
3. ↑ Ehrenberg, H.; Schwarz, B.; Weitzel, H. (2006-10-01). "Magnetic phase diagrams of -MnMoO4". Journal of Magnetism and Magnetic Materials 305 (1): 57–62. doi:10.1016/j.jmmm.2005.11.027.
4. ↑ Doyle, W. P.; McGuire, G.; Clark, G. M. (1996-05-01). "Preparation and Properties of Transition Metal Molybates (VI)". Inorganic and Nuclear Chemistry 28 (5): 1185–1190. doi:10.1016/0022-1902(66)80444-X.
5. ↑ 5.0 5.1 Yan, Xiaodong; Tian, Lihong; Murowchick, James; Chen, Xiaobo (2016-03-01). "Partially amorphized MnMoO4for highly efficient energy storage and the hydrogen evolution reaction" (in en). J. Mater. Chem. A 4 (10): 3683–3688. doi:10.1039/c6ta00744a. ISSN 2050-7496.

* v
* t
* e

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

0.00

(0 votes)

Original source: https://en.wikipedia.org/wiki/Manganese(II) molybdate. Read more

|

Retrieved from "https://handwiki.org/wiki/index.php?title=Chemistry:Manganese(II)_molybdate&oldid=816652"
*[CID]: Compound ID
*[v]: View this template
*[t]: Discuss this template
*[e]: Edit this template