Hydrothermal synthesis and characterization of (N(C2H5)4)4[VMo12V2O44]

✍ Scribed by S. Cevik; Z. Alkan; M. Poyraz; M. Sarı; O. Büyükgüngör

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 254 KB
• Volume: 42
• Category: Article
• ISSN: 0232-1300
• DOI: 10.1002/crat.200710924

✦ Synopsis

The hydrothermal reaction of a mixture of Na

1, in 12% yield (based on Mo). 1 was investigated by means of elemental analysis, thermogravimetry, Fourier Transform Infrared Spectroscopy and Single Crystal X-ray Diffraction Methods. Crystal data for the compound: monoclinic space group P2 1 /c (No:14), a=13.7815(12) b=13.0271(9) c= 21.189(2) Å, β= 113.909(7)°, Z=2. Although [XM 14 O 42 ] -n (X=P, Si, Ge, V and M=Mo and/or V) cores have been previously determined, this is the first time that [VMo 12 V 2 O 44 ] -4 core is synthesized and characterized. The structural difference between 1 and these HPOMs is the coordinational geometry of the central metal atoms. The central vanadium in 1 has an octahedral coordination geometry, whereas in literature, the central V, P, Si and Ge atoms in [V 15 O 42 ] -9 / [SiM 8 V 6 O 42 ] -4 / [PM 8 V 6 O 42 ] -5 / [GeM 8 V 6 O 42 ] -4 have tetrahedral coordinational geometry.