Structural modifications of Cu(II) 12-tungstophosphoric acid salit studied by IR and Raman spectroscopy
2000
In this paper local processes and structural phase transformations of the
copper salt of 12-tungstophosphoric acid are investigated. The structural
phase transformations were followed through bands, characteristic for the
host lattice, in the IR and Raman spectra. The results of these
investigations, as well as those of XRPD analysis and impedance measurements
as a function of temperature show that some local processes provoke the
change in the secondary structure of the Keggin anions.
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