NEW POLYOXOTANTALATE SALT Na8[Ta6O19]·24.5H2O AND ITS PROPERTIES
P. A. Abramov, A. M. Abramova, E. V. Peresypkina, A. L. Gushchin, S. A. Adonin, M. N. Sokolov
Keywords: tantalate, crystal structure, single crystal X-ray diffraction
Pages: 1038-1042
Abstract
The interaction of Ta2O5 with sodium hydroxide at 400°C yields Na8[Ta6O19], which can be recrystallized from an aqueous solution in the form of Na8[Ta6O19]·24.5H2O. The complex is characterized by IR spectroscopy, thermogravimetry, powder XRD, and single crystal XRD: hexagonal system, P63 space group, a = 12.3622(2) Å, c = 31.4305(7) Å, V = 4159.81(13) Å3, dx = 3.217 g/cm3, R = 0.0195.
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