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  • 1 University of Chemical Technology and Metallurgy Department of Inorganic Chemistry 8 Kliment Ohridsky Str. 1756 Sofia Bulgaria
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A new cobalt(II) tetrahydrogen hexaoxoiodate tetrahydrate Co(H4IO6)2�4H2O is prepared by crystallization from an acidic aqueous solution. This compound is identified by quantitative analysis, TG, DTA, DSC and IR spectra. A thermal decomposition scheme is proposed. Some phase transitions are identified and the corresponding enthalpy changes are determined.