Stable amorphous potassium peroxostannate nanoparticles with controlled sizes (10-100 nm), morphology, and hydrogen peroxide percentage (19-30 wt %) were synthesized for the first time. The compounds were characterized by vibrational spectroscopy, 119Sn MAS NMR spectroscopy, powder X-ray diffraction, and thermogravimetry. These characteristics were compared to those for K2Sn(OH)6 and K2Sn(OOH)6. Potassium peroxostannate particles are mainly built of peroxo-bridged polymer chains. The particles are stable when stored in a dry state or suspended in nonaqueous solvents; in contact with water, they release hydrogen peroxide.
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ACKNOWLEDGMENTS This work was supported by the Russian Foundation for Basic Research (project no. 08-03-00537) and the Federal Agency for Science and Innovations (grant no. MK-3120.2008.3).