ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Salts of periodic acid. XI. Lead periodates

M. Drátovský and J. Matějčková

Lehrstuhl für anorganische Chemie der Naturwissenschaftlichen Fakultät an der Karlsuniversität, Praha

Abstract:   The thermal decompn. of Pb₃(IO₅)₂·H₂O, Pb₂I₂O₉·3H₂O, and Pb₄I₂O₁1·5H₂O at increasing temp. from 50 to 700° was described. Pb₂I₂O₉·3H₂O starts to decomp. at 155° with the loss of H₂O and O and with the formation of PbIO₄ contg. formally sexivalent I. Pb₃(IO₅) starts to decomp. at 170° with the formation of a nonstoichiometric product with the ratio of I:O = 1:3.30. Pb₄I₂O₁₁·5H₂O loses at 100° part of the H₂O with the formation of a lower hydrate. The final product of the thermal decompn. of all 3 periodates is a mixt. of PbO and Pb₃O₄. X-ray patterns of PbIO₄ and Pb₂I₂O₉·3H₂O are different than those of Pb₃(IO₅)2·H₂O, Pb₂I₂O₉·3H₂O, and H₅IO₆. The chem. individuality of PbIO₄ and the existence of sexivalent I was also detd. by measuring the magnetic susceptibility.

Full paper in Portable Document Format: 198a604.pdf (in Czech)

Chemical Papers 19 (8) 604–610 (1965)