二水合锇酸钾

Potassium osmate is the inorganic compound with the formula K2[OsO2(OH)4]. It contains Osmium in the VI (6+) oxidation state. It is a diamagnetic purple salt that gained attention as a catalyst for the asymmetric dihydroxylation of olefins. When dissolved in water a pink solution is formed. But when dissolved in methanol the solution is blue.