The Raman spectra of crystalline sulphates of Ni and Mn

Krishnamurti, D. (1958) The Raman spectra of crystalline sulphates of Ni and Mn Proceedings of the Indian Academy of Sciences, Section A, 48 (6). pp. 355-363. ISSN 0370-0089

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The paper reports the results of investigations on the Raman spectra of NiSO4·6H2O (tetragonal and monoclinic forms), NiSO4·7H2O (orthorhombic) and MnSO4·4H2O (monoclinic). Using λ 2536·5 resonance radiation of mercury for excitation of the Raman effect, it has been possible to observe a large number of frequency shifts. The spectra exhibit striking differences between themselves and also a few characters of general similarity. These are largely explicable in terms of the crystal symmetry and structure of these substances. In all the cases studied, the internal frequencies of the sulphate ion exhibit multiplicities owing to the lowering of the symmetry of the SO4 ion in the crystalline state and due to the number of ions present in the unit cell.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
ID Code:33319
Deposited On:31 Mar 2011 08:02
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