Atomistry » Osmium » Chemical Properties » Potassium Iodosmate
Atomistry »
  Osmium »
    Chemical Properties »
      Potassium Iodosmate »

Potassium Iodosmate, K2OsI6

Potassium Iodosmate, K2OsI6, is readily prepared by treating potassium osmyl oxynitrite with a fairly concentrated solution of hydriodic acid:

K2(OsO3)(NO2)2 + 8HI = K2OsI6 + I2 + 2HNO2 + 3H2O.

The reaction is vigorous, nitrous fumes being disengaged, as also iodine vapour. On filtering the brownish violet solution and allowing to stand, crystals of potassium iodosmate separate out as dark violet octahedra. The salt is not very soluble in water, but more so than the brom- and chlor-osmates, and the solution rapidly decomposes, although the presence of a little free hydriodic acid renders it stable. It may be heated to 200° C. in hydrogen without loss in weight, but in the neighbourhood of 300° C. hydrogen iodide is evolved.

Last articles

Zn in 7VD8
Zn in 7V1R
Zn in 7V1Q
Zn in 7VPF
Zn in 7T85
Zn in 7T5F
Zn in 7NF9
Zn in 7M4M
Zn in 7M4O
Zn in 7M4N
© Copyright 2008-2020 by
Home   |    Site Map   |    Copyright   |    Contact us   |    Privacy