Synthesis
and characterization of metal polycarboxylates constructed from lanthanides(iii)
and 1,2,4,5-benzenetetracarboxylic acid |
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Authors: | Z Rz?czyńska A Ostasz M Sikorska-Iwan H G?uchowska E Olszewska S Pikus |
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Institution: | (1) Faculty of Chemistry, Maria Curie-Skłodowska University, Lublin, Poland, 20-031, M.C. Skłodowska Sq. 2 |
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Abstract: | The complexes
of yttrium(III) and lanthanides(III) with 1,2,4,5-benzenetetracarboxylic acid
were prepared as crystalline solids of the general formula Ln4(C10H2O8)3⋅14H2O. They
are insoluble in water. On heating in air or inert gas atmosphere all compounds
lose water molecules; next anhydrous compounds decompose to oxides. The yttrium
complex and heavy lanthanide (from Ho to Lu) ones crystallize in monoclinic
crystal system. The dehydration does not change the crystal structure of the
compounds. |
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Keywords: | 1 2 4 5-benzenetetracarboxylates lanthanide complexes pyromellitates TG-DSC TG-DTA X-ray powder analysis |
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