Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1238521 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2006 | 7 Pages |
Abstract
Infrared and Raman spectra of four rare earth (Ho, Eu, Nd and Pr) double sulphates have been recorded and analysed based on the vibrations of methyl ammonium cations, sulphate anions and water molecules. Formation of hydrogen bonds of the type NHâ¯O and OHâ¯O are identified in all the compounds. Bifurcated hydrogen bonds are present in the compounds with dimethyl ammonium cations. The sulphate anions are distorted and occupy a lower site symmetry in the compounds. The bands obtained for (CH3)2NH2 and SO42â ions indicate that the structural bonding of (CH3)2NH2Eu(SO4)2·H2O and (CH3)2NH2Ho(SO4)2·4H2O is identical. Electronic transition bands of Eu3+ and Nd3+ observed in the Raman spectra of these two compounds have been identified and discussed.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
R.S. Jayasree, V.U. Nayar, V. Jordanovska,