ChemInform Abstract: Tin-Containing Nasicon-Related Compounds: A New Mixed Valence Compound, Sn0.5Sn2P3O12, Containing Sn4+ and Sn2+ and Lithium Incorporation within CuSn2P3O12.

✍ Scribed by F. J. BERRY; R. C. THIED

• Publisher: John Wiley and Sons
• Year: 2010
• Weight: 31 KB
• Volume: 28
• Category: Article
• ISSN: 0931-7597
• DOI: 10.1002/chin.199750023

✦ Synopsis

Tin-Containing Nasicon-Related Compounds: A New Mixed Valence Compound, Sn0.5Sn2P3O12, Containing Sn4+ and Sn2+ and Lithium Incorporation within CuSn2P3O12.

-The novel mixed valence tin compound Sn0.5Sn2P3O12 is prepared by sequential heating of a stoichiometric mixture of SnO and SnO2 to 1000 • C. As revealed from the powder XRD pattern and the 119Sn Moessbauer or chemical isomer shift data recorded for Sn2+ at 298 K and 77 K, the nasicon-related compound contains highly ionic Sn2+ within the Type I sites in the channels. Treatment of the light green compound CuSn2P3O12 with BuLi yields a black solid due to reduction of Cu+ ions in off-centered positions in the Type I sites by incorporation of Li+ and segregation of Cu0 to the exterior of the structure as shown from the