| 释义 |
perosmate Chem.|pəˈrɒzmeɪt|
[f. per-1 5 + osmate.]
A salt of osmium containing the anion [OsO4(OH)2]2-, in which osmium has an oxidation state of 8. Formerly represented as M2O.OsO4 (where M is an alkali metal) and called osmiates (see osmiate).
The passage in ed. 7 (1890) of Bloxham's Chem. corresponding to quot. 1895 occurs s.v. osmiate.
1895Thomson & Bloxam Bloxam's Chem. (ed. 8) 470 By dissolving perosmic anhydride in potash, potassium perosmate is supposed to be formed, but this has not been isolated. 1949Thorpe's Dict. Appl. Chem. (ed. 4) IX. 134/1 Addition of alcohol to the clear solution and washings precipitates the ruthenium..and reduces the perosmate to violet osmate. 1973S. E. Livingstone in J. C. Bailar et al. Comprehensive Inorg. Chem. III. xliii. 1232 Potassium osmate K2[OsO2(OH)4]..is best prepared by reduction with alcohol of potassium perosmate K2[OsO4(OH)2], which can be prepared by treating OsO4 with cold KOH. Ibid., The octavalent state..occurs in the tetroxide OsO4, the perosmate [OsO4(OH)2]2-, [etc.]. |