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Raman spectra, absolute Raman intensities and electro‐optical parameters of pertechnetate, perrhenate and periodate ions in aqueous solution
Author(s) -
Eysel Hans H.,
Kanellakopulos Basil
Publication year - 1993
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250240211
Subject(s) - perrhenate , raman spectroscopy , aqueous solution , chemistry , pertechnetate , periodate , ion , analytical chemistry (journal) , raman scattering , inorganic chemistry , technetium , optics , nuclear chemistry , physics , biochemistry , organic chemistry , chromatography
Complete Raman spectra of all four fundamentals of pertechnetate, perrhenate and periodate ions in aqueous solution were measured and calibrated against NaClO 4 , as an external standard. Electro‐optical parameters for the TcO, ReO and IO bonds were calculated. Changes in the previously published force fields were necessary to adjust the eigenvectors to the experimental frequencies and intensities in an aqueous environment. Equilibrium bond polarizabilities were estimated from refractive index measurements in connection with Raman intensities of the v 2 bending modes. The results are discussed in connection with the ionic size of the XO 4 − anions and behaviour of perrhenate and pertechnetate ions in extraction processes.