Structure of Pentafluoridozirconic Acid Crystallohydrates According to Vibrational Spectroscopy Data.

Pentafluoridozirconic acid crystallohydrates HZrF5·3H2O and HZrF5·2H2O, as well as the intermediate product of their thermal decomposition ZrF4·H2O, are studied by vibrational spectroscopy and thermogravimetry. It is shown that HZrF5·nH2O (n = 2, 3) crystallohydrates are salts with complex cations H5O and H7O . The bands in the IR and Raman spectra are assigned based on the results of quantum-chemical calculations. [ABSTRACT FROM AUTHOR]