Thermal and structural studies of the chloro complexes of cobalt and copper with 2-amino-3-methylpyridine |
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Authors: | B R Carson G Kenessey J R Allan G Liptay |
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Institution: | (1) Department of Applied Chemical and Physical Sciences, Napier University, EH10 5DT Edinburgh, Scotland;(2) Thermoanalytical Research Group, Department of Inorganic Chemistry, Technical University of Budapest, H-1521, Hungary |
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Abstract: | The chloro complexes of 2-amino-3-methylpyridine with cobalt(II) and copper(II) have been prepared in ethanolic solution and
solid compounds have been isolated. The compounds have stoichiometry ML2Cl2 whereM is Co2+ or Cu2+ and L is 2-amino-3-methylpyridine. Spectral and magnetic studies have been used to obtain information about the environment
of the metal ion in these compounds. The compounds have tetrahedral structures. The thermal decomposition of each compound
has been studied using thermogravimetry and differential thermal analysis. Thermogravimetry studies show that the cobalt complex
forms an intermediate compound before the metal oxide is produced while the copper compound undergoes decomposition with loss
of organic ligand and the formation of copper chloride which then decomposes to give an oxide of copper.
The enthalpy of reaction for each of the processes has been calculated from the thermal analysis curves. |
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Keywords: | chloro complexes of cobalt and copper complexes kinetics structural studies |
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