Preparation and crystal structure of a new tin titanate containing Sn2+; Sn2TiO4

Abstract Single crystals of a new tin titanate containing Sn 2+ , Sn 2 TiO 4 was prepared by high temperature reaction in an evacuated quartz tube and its crystal structure was determined by single crystal X-ray diffraction data. The tin titanate crystallizes in the tetragonal space group P 4 2 / mbc with a = 8.490(2) and c = 5.923(3) A, Z = 4 and the final R factors are R = 0.0497 and R w = 0.0676 for 354 unique reflections. This tin titanate is isostructural with the low temperature form of Pb 3 O 4 (Pb 2 2+ Pb 4+ O 4 ). This compound was oxidized above 600 °C accompanying the mass gain and finally changed to rutile-type solid solution (Sn,Ti)O 2 .