Electron paramagnetic resonance, optical absorption, IR and Raman spectral studies on pelecypod shell
Frost, Ray L., Reddy, S. Lakshmi, Reddy, K.N.M., Reddy, G. Siva, Reddy, B. Jagannadha, & Endo, Tamio (2008) Electron paramagnetic resonance, optical absorption, IR and Raman spectral studies on pelecypod shell. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 69(2), pp. 503-508.
pelecypod shell originated from Kolleru lake of Andhra Pradesh is used in the present work. It contains Mn(II) and Fe(III) in traces. The EPR spectrum of the compound is due to Mn(II) which is in three independent sites . The three g values are evaluated with slight differences. The hyperfine component varies from 9.33 mT to 9.49 mT. The zero field splitting parameter is also ranges from 43.8(1) mT to 44.1(1) mT. Using the covalence parameter the number of ligands around metal is estimated as twenty. In EPR spectrum Fe(III) is identified. The optical absorption spectrum is attributed to Mn(II) in octahedral geometry. Further 10 Dq band is attributed to Fe(II) in the optical absorption spectrum. NIR spectral results are due to water fundamentals. Where as IR and Raman spectrum is due to carbonate ion fundamentals.
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|Item Type:||Journal Article|
|Keywords:||pelecypod shell, EPR, Optical absorption spectrum, NIR, IR and Raman Spectra, Mn(II), octahedral symmetry|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600)|
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
|Copyright Owner:||Copyright 2008 Elsevier|
|Copyright Statement:||Reproduced in accordance with the copyright policy of the publisher.|
|Deposited On:||05 Feb 2008|
|Last Modified:||29 Feb 2012 23:49|
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