High-temperature, high-pressure hydrothermal synthesis and characterization of a new framework stannosilicate: Cs2SnSi3O9

✍ Scribed by Fang-Rey Lo; Kwang-Hwa Lii

• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 302 KB
• Volume: 178
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1016/j.jssc.2004.12.002

✦ Synopsis

A new stannosilicate Cs 2 SnSi 3 O 9 has been synthesized and characterized by single-crystal X-ray diffraction and solid-state NMR spectroscopy. It crystallizes in the orthorhombic space group P2 1 2 1 2 1 (No. 19) with a ¼ 7:9612ð7Þ ( A; b ¼ 10:3444ð9Þ ( A; c ¼ 11:780ð1Þ ( A; V ¼ 970:1ð3Þ ( A 3

; and Z ¼ 4 with R 1 ¼ 0:0189: The structure consists of helical silicate chains with a period of six tetrahedra which are connected by SnO 6 octahedra to form a 3D framework containing 6-ring and 7-ring channels where the Cs + cations reside. This work is one of the few studies concerning the synthesis of stannosilicates under high-temperature and highpressure hydrothermal conditions.