Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10558325 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2005 | 7 Pages |
Abstract
The lanthanide contraction in reflected in continuously increasing trends for the averaged LnO stretching frequencies and force constants with increasing inverse of ionic radii. The stretching force constants increased from 0.81 to 1.16Â Ncmâ1 for the LnO6 prism in the series from La to Lu, while those for the capping LnO3 bonds increased from 0.49 to 0.65Â Ncmâ1. The LnO stretching force constants showed a smooth correlation with the LnO bond distances to the prism oxygen atoms, while the correlation to the LnO capping oxygen atoms has a different shape, reflecting the increased ligand-ligand repulsion with decreasing lanthanide ion size.
Related Topics
Physical Sciences and Engineering
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Authors
János Mink, Mikhail Yu. Skripkin, László Hajba, Csaba Németh, Alireza Abbasi, Magnus Sandström,