Spectrochemical and Thermal Behaviour of the 5-chloro-2-nitrobenzoates of Rare Earth Elements |
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Authors: | Ferenc Wies?awa Bocian Beata |
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Institution: | (1) Department of Inorganic and General Chemistry, Institute of Chemistry Maria Curie-Skłodowska University, PL 20-031 Lublin, Poland |
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Abstract: | The conditions of the formation of yttrium and lanthanide 5-chloro-2-nitrobenzoates were studied and their quantitative composition
and solubilities in water at 298 K were determined. They are anhydrous or hydrated complexes and their solubilities are of
the order of 10-3 mol dm-3. The IR and X-ray spectra for the complexes were recorded. All complexes are crystalline compounds.
Their thermal decomposition was studied. It was found that on heating above 523 K the complexes decompose explosively. Therefore
their thermal decomposition was carried out in the temperature range 273-523 K. Hydrated complexes lose crystallization water
molecules in one step. From the results it appeared that during dehydration process no transformation of nitro group to nitrito
took place. Some of physico-chemical properties of rare earth element 5-chloro-2-nitrobenzoates were compared with 2-nitro-
and 3-chlorobenzoates of those elements.
This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | 5-chloro-2-nitrobenzoates complexes of rare earth elements rare earth elements spectrochemical investigations thermal stability of complexes |
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