cadmium permanganate

Identifiers

CAS Number

* 34057-37-9 anhydrous Y
* 13520-63-3 hexahydrate Y

3D model (JSmol)

* Interactive image

PubChem CID

* 21872968

InChI

* InChI=1S/Cd.2Mn.8O/q+2;;;;;;;;;2*-1

Key: ZACBZJVABWSYQB-UHFFFAOYSA-N

SMILES

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

Properties

Chemical formula

| Cd(MnO4)2
Molar mass | 350.28
Appearance  | dark purple crystals[1]

Solubility in water

| soluble

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

Infobox references

Chemical compound

Cadmium permanganate is an inorganic compound with the chemical formula Cd(MnO4)2. It can form the hexahydrate Cd(MnO4)2·6H2O.

## Preparation

[edit]

Cadmium permanganate can be obtained by reacting cadmium sulfate and barium permanganate. After removing the barium sulfate precipitate, the solution is crystallized in the dark:[1]

Ba(MnO4)2 \+ CdSO4 → Cd(MnO4)2 \+ BaSO4↓

Cadmium permanganate can also be produced by reacting manganese heptoxide with cadmium oxide[2] or cadmium hydroxide.[3]

## Properties

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Cadmium permanganate hexahydrate loses water of crystallisation at 61~62 °C, and anhydrate can be obtained at a constant temperature of 90 °C. The anhydrous form begins to decompose at 108 °C:[3]

Cd(MnO4)2 → CdMnO3 \+ MnO2 \+ 3/2 O2↑

## References

[edit]

1. ^ a b Kótai, László; Banerji, Kalyan K. (2001-03-31). "An Improved Method for the Preparation of High-Purity Permanganate Salts". Synthesis and Reactivity in Inorganic and Metal-Organic Chemistry. 31 (3): 491–495\. doi:10.1081/SIM-100002234. ISSN 0094-5714. Archived from the original on 2021-02-20. Retrieved 2020-06-21.
2. ^ Kótai, László; Sajó, István E.; Gács, István; Sharma, Pradeep K.; Banerji, Kalyan K. (Jul 2007). "Convenient Routes for the Preparation of Barium Permanganate and other Permanganate Salts". Zeitschrift für anorganische und allgemeine Chemie (in German). 633 (8): 1257–1260\. doi:10.1002/zaac.200700142. Retrieved 2020-06-21.
3. ^ a b Zhang, Zhongsheng; Wu, Jigui; Zhang, Yanni (1991-07-02). "Research on Kinetic Parameters of Cadmium Permanganate by Thermogravimetry". Journal of Lanzhou University (Natural Science) (in Chinese). 27 (2). doi:10.13885/j.issn.0455-2059.1991.02.019.

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Cadmium compounds

Cadmium(I)|

* Cd2(AlCl4)2

Cadmium(II)|

* Cd(BF4)2
* CdF2
* CdCl2
* CdBr2
* CdI2
* Cd(CN)2
* CdH2
* CdO
* CdS
* CdSe
* CdTe
* Cd(OH)2
* Cd3N2
* Cd(NO3)2
* CdSO4
* CdSeO4
* CdCrO4
* CdWO4
* CdTeO3
* Cd(C3H5O3)2
* Cd3As2
* Cd3P2
* Cd3(PO4)2
* CsCdCl3
* CsCdBr3
* Cd(CH3CO2)2
* Cd(O2CC17H35)2

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Salts and covalent derivatives of the permanganate ion

| HMnO4 |  |  |  | He

|
|
|
|

LiMnO4 | Be  | B  | C  | NH4MnO4 | O  | F  | Ne
NaMnO4 | Mg(MnO4)2 | Al(MnO4)3 | Si  | P  | S  | Cl  | Ar
KMnO4 | Ca(MnO4)2 |  | Sc  | Ti  | V  | Cr  | [MnO+
3][MnO−
4] | Fe  | Co  | Ni  | Cu  | Zn  | Ga  | Ge  | As  | Se  | Br  | Kr
RbMnO4 | Sr(MnO4)2 |  | Y  | Zr  | Nb  | Mo  | Tc  | Ru  | Rh  | Pd  | AgMnO4 | Cd(MnO4)2 | In  | Sn  | Sb  | Te  | I  | Xe
CsMnO4 | Ba(MnO4)2 | *  | Lu  | Hf  | Ta  | W  | Re  | Os  | Ir  | Pt  | Au  | Hg  | Tl  | Pb  | Bi  | Po  | At  | Rn
Fr  | Ra  | **  | Lr  | Rf  | Db  | Sg  | Bh  | Hs  | Mt  | Ds  | Rg  | Cn  | Nh  | Fl  | Mc  | Lv  | Ts  | Og

*  | La  | Ce  | Pr  | Nd  | Pm  | Sm  | Eu  | Gd  | Tb  | Dy  | Ho  | Er  | Tm  | Yb
**  | Ac  | Th  | Pa  | U  | Np  | Pu  | Am  | Cm  | Bk  | Cf  | Es  | Fm  | Md  | No
*[CID]: Compound ID
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