| Identification | Back Directory | [Name]
Potassium osmate(VI) dihydrate | [CAS]
10022-66-9 | [Synonyms]
potassium osmium oxide
POTASSIUM OSMIUM OXIDE(VI)
POTASSIUM OSMATE DIHYDRATE
PotassiuM osMate(VI) dihyd
OsMate, dipotassiuM, dihydrate
PotassiuM osMate(vi) dehydrate
POTASSIUM OSMATE(VI) DIHYDRATE
PotassiuM osMate (Vl) dihydrate
Potassiumosmate(VI)dihydrate,99%
Potassium osmium oxide(VI) dihydrate
potassium osmium(vi) oxide dihydrate
PotassiuM dioxidodioxoosMiuM dihydrate
POTASSIUM OSMATE DIHYDRATE FOR SYNTHESIS
Potassium osmium(VI) oxide dihydrate, 99+%
Potassium osmate(VI) dihydrate, 51.0-52.0% Os
Osmate (OsO42-), dipotassium, dihydrate, (T-4)-
PotassiuM osMate(VI) dihydrate, 99% (99.98+%-Os)
PotassiuM osMiuM(VI) oxide dihydrate, 99+%, 99+%
Potassium osmium oxide(VI) dihydrate, Os 50.5% min | [EINECS(EC#)]
243-247-1 | [Molecular Formula]
H4K2O6Os | [MDL Number]
MFCD00149919 | [MOL File]
10022-66-9.mol | [Molecular Weight]
368.45 |
| Chemical Properties | Back Directory | [Appearance]
violet crystalline powder | [storage temp. ]
Store below +30°C. | [form ]
Powder | [color ]
White | [Water Solubility ]
Soluble in water. Slowly decomposes in aqueous solution forming the tetroxide. Insoluble in alcohol, etherSoluble in water. Insoluble in alcohol and ether. | [Sensitive ]
Hygroscopic | [Stability:]
hygroscopic | [InChI]
InChI=1S/K.H2O.4O.Os/h;1H2;;;;;/q+1;;;;;;-2 | [InChIKey]
DGODWNOPHMXOTR-UHFFFAOYSA-N | [SMILES]
[Os-2](=O)(=O)(=O)=O.[K+].O | [Uses]
Determination of nitrogenous matter in water.
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| Hazard Information | Back Directory | [Chemical Properties]
violet crystalline powder | [Hazard]
Toxic by ingestion and inhalation.
| [Reactivity Profile]
catalyst for oxidative cleavage; oxidation reagent; used in dihydroxylation and aminohydroxylation reactions. | [storage]
incompatible with strong oxidizing reagents. Toxic if inhaled. May cause respiratory tract irritation. Toxic if absorbed through the skin. Toxic if swallowed. | [Structure and conformation]
The complex anion is octahedral. Like related d2 dioxo complexes, the oxo ligands are trans. The Os=O and Os-OH distances are 1.75(2) and 1.99(2) Å, respectively. It is a relatively rare example of a metal oxo complex that obeys the 18e rule.
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| Safety Data | Back Directory | [Hazard Codes ]
T | [Risk Statements ]
23/24/25 | [Safety Statements ]
22-26-36-45 | [RIDADR ]
UN 3288 6.1/PG 2
| [WGK Germany ]
3
| [TSCA ]
Yes | [HazardClass ]
6.1 | [PackingGroup ]
III | [HS Code ]
28439090 | [Toxicity]
LD50 orally in Rabbit: 2694 mg/kg |
| Questions And Answer | Back Directory | [Description]
Potassium osmate (VI) dehydrate is an inorganic compound with the formula H4K2O6Os. ISn the VI (6+) oxidation state the compound is a diamagnetic purple salt contains osmium. It is soluble in water and slowly decomposes in aqueous solution. Potassium osmate (VI) dehydrate is insoluble in ethereal and alcoholic solvents.
| [Preparation]
Edmond Fremy first prepared potassium osmate (VI) dehydrate in 1844 by reducing perosmates using alcohol.
2OsO4 + C2H5OH + 3 KOH → CH3CO2K + 2 K2[OsO2(OH)4]
| [Applications and Reactions]
Potassium osmate (VI) dehydrate is used as a catalyst in the dihydroxylation of cyclic internal alkenes such as lactams, 1,2 dioxines dihydrothiophenes and hexahydropyrans. The resulting diols from such reactions have been used in the preparation of various carbohydrate and similar molecular scaffolds. Potassium osmate (VI) dehydrate iss also used in the development of an asymmetric dihydroxylation methodology targeting heteroaromatic acrylates.
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