Effect of pH on the composition of the clathrates of tetracyanocomplexes Ni[II] by methods of thermal analysis

The aim of this study was the isolation of the host model compounds of the tetracyano complexes of Ni[II] with the chemical formula Ni(NH 3) m Ni(CN) 4 from solutions at different pH. The study of the chemical composition of the host component and their thermal stability is discussed. After the isol...

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Bibliographic Details
Published in:Thermochimica acta 1984, Vol.74 (1), p.1-8
Main Authors: REHAKOVA, M, SOPKOVA, A, KRALIK, P, FALTANOVA, T
Format: Article
Language:English
Subjects:
Chemistry
Coordination compounds
Exact sciences and technology
Inorganic chemistry and origins of life
Preparations and properties
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Summary:The aim of this study was the isolation of the host model compounds of the tetracyano complexes of Ni[II] with the chemical formula Ni(NH 3) m Ni(CN) 4 from solutions at different pH. The study of the chemical composition of the host component and their thermal stability is discussed. After the isolation of the host component, some water was always found to be present in the material in the solid state. According to its behavior in the solid state the compound of general formula Ni(NH 3) m Ni(CN) 4· n H 2O is of the clathrate type. The amount of water and ammonia ligands depends on the pH, and was determined by TG, DTA, DSC and combined DSC/GC measurements.
ISSN:0040-6031
1872-762X
DOI:10.1016/0040-6031(84)80001-5