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Author Jayasree, R. S. ♦ Nayar, V. U. ♦ Jordanovska, V.
Source Sree Chitra Tirunal Institute for Medical Sciences & Technology
Content type Text
Publisher Spectrochimica Acta Part A-molecular and Biomolecular Spectroscopy
File Format PDF
Language English
Subject Domain (in DDC) Technology ♦ Medicine & health ♦ Diseases
Subject Domain (in MeSH) Diagnosis ♦ Analytical, Diagnostic and Therapeutic Techniques and Equipment
Subject Keyword Radiology
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 N-H center dot center dot center dot O and O-H center dot center dot center dot 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)(2)NH2 and SO42- ions indicate that the structural bonding of (CH3)(2)NH2Eu(SO4)(2)center dot H2O and (CH3)(2)NH2Ho(SO4)(2)center dot 4H(2)O is identical. Electronic transition bands of Eu3+ and Nd3+ observed in the Raman spectra of these two compounds have been identified and discussed. (c) 2005 Elsevier B.V. All rights reserved.
Education Level UG and PG
Learning Resource Type Article
Educational Framework Medical Council of India (MCI)
Volume Number 65
Issue Number 2
Page Count 7
Starting Page 278
Ending Page 284