Synthesis, structural characterization, and electrocatalytic studies of αββα-(ZnIIOH2)2(FeIII)2(X2W15O56)214– (X = P or As)

摘要: Abstract The synthesis and characterization of the previously unknown mixed-metal sandwich-type Wells–Dawson complexes, αββα-[(ZnIIOH2)2(FeIII)2(P2W15O56)2]14– (Zn2Fe2P4) αββα-[(ZnIIOH2)2(FeIII)2(As2W15O56)2]14– (Zn2Fe2As4), are described. complexes prepared by reaction Zn(II) with divacant lacunary species, αααα-[(NaOH2)2(FeIII)2(P2W15O56)2]16– αααα-[(NaOH2)2(FeIII)2(As2W15O56)2]16–, respectively, characterized X-ray crystallography, infrared NMR spectroscopy, elemental thermogravimetric analyses, differential scanning calorimetry, cyclic voltammetry. Like their analogues, αββα-[(MnIIOH2)2(FeIII)2(P2W15O56)2]14– (Mn2Fe2P4) αββα-[(MnIIOH2)2(FeIII)2(As2W15O56)2]14– (Mn2Fe2As4), remarkable stability observed for these from pH 0 to at least 6 has permitted a comprehensive evaluation electrocatalytic abilities toward reduction O2, H2O2, HNO2 NO. A comparison properties Mn(II) is provided. To cite this article: I.M. Mbomekalle et al., C. R. Chimie 8 (2005).