Synthesis and characterization of metal polycarboxylates constructed from lanthanides(iii) and 1,2,4,5-benzenetetracarboxylic acid

• DOI: 10.1007/s10973-005-7103-z
• Publication Date: 2005-09-16T11:17:17Z
• Authors: Z. Rzączyńska; A. Ostasz; M. Sikorska-Iwan; H. Głuchowska; E. Olszewska; S. Pikus
• Keywords: Monoclinic crystal system; Anhydrous; Inert gas; Crystal (programming language); Thermogravimetry

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.