Citation: Xiao Peng ZHAN, Lu MENG. Synthesis and ¹⁸³W NMR Characterization of α-K₇GaW₁₁ (TiO₂)O₃₉·11H₂O Heteropolyanion[J]. Chinese Chemical Letters, ;2001, 12(8): 731-732. shu

Synthesis and ¹⁸³W NMR Characterization of α-K₇GaW₁₁ (TiO₂)O₃₉·11H₂O Heteropolyanion

Xiao Peng ZHAN ² ,
Lu MENG ¹

1.
Faculty of Chemistry, Northeast Normal University, Changchun 130024;
2.
Department of Chemistry, Yangzhou College of Education, Yangzhou 225002

Received Date: 5 June 2000

Fund Project: This work is supported by Fok Yung Tung Education Foundation.

The peroxotitanium-substituted heteropolytungstate α-K₇GaW₁₁(TiO₂)O₃₉&·11H₂O has been synthesized and characterized by elemental analysis, IR, UV, ¹⁸³W NMR and electrochemistry. ¹⁸³W NMR spectrum consists of six lines with intensity ratio 2:2:1:2:2:2, indicated that the TiO₂ occupied the empty octahedral site of the GaW₁₁ anion forming a polyanion with Cs symmetry. The characteristic charge-transfer absorption band O₂^2-→Ti at 385 nm occurs in the UV spectrum. The polarographic reduction potential of O₂^2- at ca.+0.87 V has been found.
- Peroxotitanium gallatotungstate,
- Keggin structure,
- ¹⁸³W NMR.
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