학술논문
The Direct Synthesis and Characterization of Alkali Metal Hexafluorochromates (III), MI3CrF6
Document Type
Article
Author
Source
Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry; January 1981, Vol. 11 Issue: 7 p677-683, 7p
Subject
Language
ISSN
15533174; 15533182
Abstract
The reduction of an aqueous solution of CrO3 with hydrazine hydrate in the presence of an excess of equimolar amounts of MI OH and 40% HF yields green, crystalline alkali hexafluorochromates(III), MI3CrF6 (MI= NH4, Na, K or Rb), in very high yield. The lithium analogue has been prepared by using Li2CO3 instead of lithium hydroxide. The compounds have been characterized by elemental analyses, room temperature magnetic moments, infrared spectra and molar conductivity. Time dependent molar conductivity studies of (NH4)3CrF6 and K3CrF6 suggest that the compounds do not undergo decomposition in water at ambient temperatures.