Citation: En Bo WANG, Lan Cui ZHANG, Zuo Ping WANG. SYNTHESIS AND STRUCTURE OF TWO-ELECTRON HETEROPOLY BLUE K₂H₄SiMoⅤ₂Mo (Ⅵ) ₁₀O₄₀·12H₂O WITH α-KEGGIN STRUCTURE[J]. Chinese Chemical Letters, ;1991, 2(10): 803-804. shu

SYNTHESIS AND STRUCTURE OF TWO-ELECTRON HETEROPOLY BLUE K₂H₄SiMoⅤ₂Mo (Ⅵ) ₁₀O₄₀·12H₂O WITH α-KEGGIN STRUCTURE

a. Department of Chemistry, Northeast Normal University, Changchun, 130024;
b. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun, 130022

Received Date: 29 July 1991

Fund Project: Project Supported by the National Natural Science Foundation of China.

The single crystal of two-electron heteropoly blue with Si as the heteroatom and α-Keggin structure K₂H₄SiMoⅤ₂Mo (Ⅵ) ₁₀O₄₀·12H₂O was obtained by electrolytic reduction. It crystallizes in a triclinic system with space group P1, Mr=2117.73, a=13.702 (4), b=14.107 (3), c=14.184 (2)Å; α=119.27 (1), β=93.14 (2),;γ=110. 3 (2)°, V=2154.29Å³, Z=2, F (000)=1999, μ=36.39cm^-1, Dc=3.26 g/cm³. Final R factor is 0.0515. Mo (Ⅴ) is situated in two different edge-shared Mo₃O₁₃ groups. The heteropoly blue was characterized by IR, UV, polarography, X-ray photoelectron spectra and ESR. All the results show that the structure of the heteropoly anion with Keggin structure remains unchanged basically in the process of reduction.
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