Peroxidative chromic (VI)

Peroxidative chromic (VI) (I do not lend it or register chrome British: chromium(VI) peroxide) is the chromic peroxide that a chemical formula is referred to CrO₅. It is the unstable compound which is provided by adding chromate such as sodium chromate to acid oxygenated water. When peroxidative chromic (VI) occurs, yellow chromate changes generally in Wedgwood blue - 暗茶色. Metal chromate gives peroxidative chromic (VI) and water, a metal salt of the acid in response to oxygenated water and acid.

Peroxidative chromic (VI)
Another name Chromium peroxide
Identification information
SMILES [O-2]. [O-) [Cr] ([O-)) (=O)=O
InChI InChI=1/Cr.5O/q;;; -2;2*-1/rCrO4.O/c2-1(3,4)5;/q2*-2 Key: ZWPVWTIRZYDPKW-NIUFNKCUAY
Characteristic
Chemical formula	CrO5
Molar mass	131.99 g mol-1
Solubility to water	Soluble (I disintegrate without the stabilizer)
I can put a case, the data without the special mention for normal temperature (25 degrees Celsius), the ordinary pressure (100 kPa).

Water solution of peroxidative chromic (VI)

${\displaystyle {\ce {M2CrO4\ +2H2O2\ +2H^{+}->CrO5\ +3H2O\ +2M^{+}}}}$

Peroxidative chromic (VI) disintegrates several seconds later, and chromic (III) occurs, and the solution becomes green [¹].

${\displaystyle {\ce {2CrO5\ +7H2O2\ +6H^{+}->2Cr^{3+}\ +10H2O\ +7O2}}}$

The chromic atoms in CrO₅ are combined with one oxoligands and five oxygen atoms of two ペルオキソ ligands in total.

Derivative

 

Pyridine complex of CrO₅

It was found that peroxidative chromic (VI) stabilized as bipyridyl complex, pyridyl complex and エーテラート became the effective oxidizer in organic chemistry [²]. The structure of the pyridyl complex was decided crystallographically [³].

Source

1. ^ Holleman, Arnold F.; Wiberg, Egon; Wiberg, Nils; (1985). "Chromium" (in German). Lehrbuch der Anorganischen Chemie (91–100 ed.). Walter de Gruyter. pp. 1081–1095. ISBN 3-11-007511-3."
2. ^ Firouzabadi, H.; Iranpoor, N.; Kiaeezadeh, F.; Toofan, J. (1986), "Chromium(VI) based oxidants-1 Chromium peroxide complexes as versatile, mild, and efficient oxidants in organic synthesis," it is Tetrahedron 42:719, doi: 10.1016/S0040-4020(01) 87,476-7 
3. ^ Stomberg, Rolf (1962), "Crystal Structure of Peroxochromates, CrO₅⋅C₅H₅N," it is Nature 196 (4854): 570, doi: 10.1038/196570b0 

Outside link

• The details and photograph (German) of the experiment

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