Physical and Chemical Characteristics of the Chromium and the Cerium Group Lanthanide-Based New Materials

Some physical and chemical characteristics of hexa(thiocyanate-N)chromate complexes of cerium lanthanides with 3-pyridine-3-carboxylic acid are studied. It was shown by IR spectroscopy that the compounds are N-thiocyanate, the organic ligand is bidentate. It was established by X-ray diffraction analysis that substances have an isle structure, crystallize acoording the same structural type, and their crystallographic parameters change regularly in accordance with the change in the radii of Ln³⁺ ions. The compositions of the substances differ only in the content of crystallization water in the molecules. The magnetic characteristics and thermal behavior of substances in an inert atmosphere and oxidizing atmospheres are presented.