Photochemical Synthesis,Properties and X-Ray Crystal Structure of Tetrabutylammonium Dodecamolybdophosphate Heteropoly Blue

• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2002,（3）
• 页码范围: 240-246
• 页数: 7页
• 语种: 英文

摘要

The title heteropoly blue, (Bu4N)6H10[PMo Ⅵ 11MoⅤO40]4@H2Ohas been photochemically synthesized and characterized with elemental analysis, solid diffusion reflectance electronic spectra, CV, ESR, XPS, IR spectra, conductivity measurement and X-ray single crystal analysis. The crystallographic data for C96H218Mo48N6O169P4 are as follows: Mr = 8889.76, triclinic, P-1, a = 1.4142(3) nm, b = 2.6027(5) nm, c =2.6403(5) nm, α= 113.96(3)°, β= 90.05(3)°, γ = 105.71(3)°,V=8.481(3) nm3, Z = 1, Dc= 1.741 g/cm3, F(000)=4264, μ= 1.798 mm-1. The X-ray crystal structure analysis reveals that there is one independent molecule in the unit cell of the title heteropoly blue which contains four mixed-valence heteropoly anions, six tetrabutylammonium cations and one water molecule. Its molecular structure possesses a centrosymmetrical arrangement in the unit cell. The phosphorus atom is in the crystallographic inversion center of the heteropoly anion and the eight oxygen atoms surrounding central phosphorus atom comprise of a distorted hexahedron. Heteropoly anion has two equal sets of PO4 tetrahedron. The PO4tetrahedron and the MoO6 octahedron in the polyanion are greatly distorted.