학술논문
A Convenient Method for the Synthesis of Alkali Metal Pentafluoromanganates(III)
Document Type
Article
Author
Source
Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry; January 1982, Vol. 12 Issue: 5 p485-492, 8p
Subject
Language
ISSN
15533174; 15533182
Abstract
Reaction of MnO(OH) and a concentrated solution of AHF2 (A = NH4+, Na+, K+ or Cs+) in 40% hydrofluoric acid gives instantaneously rose-pink coloured alkali metal pentafluoromanganate(III), A2MnF5 (A = NH4+ or Na+), and alkali metal pentafluoromanganate(III) monohydrate, A2MnF5.H2O (A = K+ or Cs+). Li2MnF5 has been synthesised by reacting lithium carbonate with a solution of MnO (OH) in 40% hydrofluoric acid followed by addition of a small amount of alcohol. Characterisation of the compounds and assignment of molecular structure were made from the elemental analyses, chemical determination of oxidation state of manganese in the compounds, magnetic susceptibility measurements and infra red spectral studies.