Potassium osmate
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| Names | |
|---|---|
| Other names
Potassium osmate(VI) dihydrate | |
| Identifiers | |
| 10022-66-9 | |
| Properties | |
| H4K2O6Os | |
| Molar mass | 368.42 |
| Appearance | purple solid |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Potassium osmate is the inorganic compound with the formula K2[OsO2(OH)4]. It is a diamagnetic purple salt that gained attention as a catalyst for the asymmetric dihydroxylation of olefins.[1]
Like related d2 complexes, the oxo ligands are trans.[2] 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. The compound was first reported by Edmond Frémy in 1844.[3]
References
- ↑ Li, Guigen; Chang, Han-Ting; Sharpless, K. Barry "Catalytic asymmetric aminohydroxylation (AA) of olefins" Angew. Chem., Int. Ed. Engl. 1996, volume 35, pp. 451-4. doi:10.1002/anie.199604511
- ↑ R. K. Murmann, C. L. Barnes "Redetermination of the crystal structure of potassium trans-(dioxo)-tetra(hydroxo)osmate(VI), K2[Os(OH)4(O)2]" Z. Kristallogr. NCS 217, 2002, pp. 303–304.
- ↑ Frémy, E. "Ueber das Osmium" J. Prakt. Chem. 1844 vol.33, 406-416. doi: 10.1002/prac.18440330160
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