Chromium(II) chemistry. Part IV. Double sulphates
- 1 January 1969
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc. A
- p. 1334-1339
- https://doi.org/10.1039/j19690001334
Abstract
The double salts M2SO4,CrSO4,6H2O (M = NH4, Rb, or Cs) have been found to be high-spin compounds which obey the Curie law. Their spectroscopic and thermal properties are compatible with a tetragonally-distorted, octahedral arrangement of water molecules about the chromium(II) ion. The compounds M2SO3,M2SO4,2H2O M = Na or K) have similar properties, but are more distorted because sulphato-groups are present. The corresponding caesium dihydrate is almost diamagnetic, and this and its spectroscopic properties are consistent with a sulphato-bridged binuclear structure like that of chromium(II) acetate monohydrate.Keywords
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