Hydrothermal Synthesis and Crystal Structure of an Unusual Compound: [Cu(en)2]4[SiMo8VV4O40(VIVO)2][MoO4]2·5H2O

✍ Scribed by Guoyou Luan; Yangguang Li; Enbo Wang; Zhengbo Han; Changwen Hu; Ninghai Hu; Hengqing Jia

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 363 KB
• Volume: 165
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.2002.9517

✦ Synopsis

has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction. Black crystals crystallize in the tetragonal system, space group I4/m, a = b = 14.019(2) A ˚, c = 20.341(4) A ˚, V =3997.9(11) A ˚3, Z = 2, k(MoKa) = 0.71073 A ˚(R(F) = 0.0443 for 1819 reflections). Data were collected on a Siemens P4 four-circle diffractometer at 293 K in the range of 1.76 o h o 24.981 using the x-scan technique. The structure was solved by the direct method and refined by the full-matrix least squares on F 2 method using the SHELXL-97 software. X-ray crystallographic study showed that the title compound contained a bicapped a-Keggin fragment [SiMo 8 V V 4 O 40 (V IV O) 2 ] 4À polyoxoanion. # 2002 Elsevier Science (USA)