Original scientific paper

Preparation and Properties of Rare Earth 4-Nitrophthalates

Renata Kurpiel-Gorgola ; Department of General Chemistry, Marie Curie Skłodowska University, Pl. M.Curie-Skłodowskiej 2, 20–031 Lublin, Poland
Wanda Brzyska ; Department of General Chemistry, Marie Curie Skłodowska University, Pl. M.Curie-Skłodowskiej 2, 20–031 Lublin, Poland

Abstract

Rare earth (Y, La−Lu) 4-nitrophthalates were prepared and studied using IR spectroscopy, TG, DTG and DTA. Their compositions were determined as well as their solubilities in water at 295 K. The rare earth complexes were obtained as solids with a 2:3 ratio of metal to organic ligand. 4-Nitrophthalates of Y, La−Eu, Dy−Tm were crystalline solids, whereas those of Gd, Tb, Yb and Lu were amorphous. The COO- group in the prepared complexes acts as bidentate chelating. The complexes are stable at room temperature. During heating they are dehydrated in one (Y, La, Pr−Yb), two (Ce, Lu) or three (La) steps, and then the anhydrous complexes decompose explosively.

Keywords

Hrčak ID:

132135

URI

https://hrcak.srce.hr/132135

Publication date:

1.3.1999.

Visits: 689 *