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Updated: May 31, 2025
Hyperspectral Imaging as a Tool to Study Optical Anisotropy in Lanthanide-Based Molecular Single Crystals
Published on: April 14, 2020
Structural studies of hydrated rare earth nitrates within the stereoatomic model of crystal structures
Anton V Savchenkov1, Galina M Kuz'micheva2
1Samara National Research University, 34 Moskovskoye Shosse, Samara, 443086, Russian Federation.
Abstract:
All crystal structures containing nitrate ions, water molecules and one of the rare earth (RE) metal atoms (La-Lu, Y, Sc) were extracted from the Inorganic Crystal Structure Database. The composition of the identified compounds is analyzed in terms of the number of coordinated and uncoordinated water molecules and nitrate ions. Among the resulting compounds, several isotypic and morphotropic series are observed. The structures were analyzed within the stereoatomic model of crystal structures. Coordination numbers of RE metals are calculated using the method of intersecting spheres. The variation of RE-O distances is analyzed over the entire series of metal atoms. Coordination modes of both nitrate ions and water molecules are established. Combinatorial topological types of Voronoi-Dirichlet polyhedra of rare earth metal atoms as coordination centers in the studied compounds are calculated.
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