| Autor: |
Bas-Serra, J., Todorut, I., Casañ-Pastor, N., Server-Carrió, J., Baker, L. C. W., Accrete, R. |
| Zdroj: |
Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry; July 1995, Vol. 25 Issue: 6 p869-882, 14p |
| Abstrakt: |
Good yield synthesis of the potassium salts of four new interrelated : olyoxometalates, [Co3+W11O39]9-(I), [Co2+W11V4+O4]8-(II), [Co2+W11V5+O40]7-(III), and [Co3+W11V5+O40]6-(IV), are reported. The title compounds have been characterized by IR and UV-Vis.-NIR spectroscopies, cyclic voltammetry and magnetic measurements. IR spectra confirm that I has the lacunary structure of an undecatungstate anion, while II through IV have a substituted α-Keggin structure with the vanadium atom located at an octahedral site replacing one tungsten atom. Optical data confirm the oxidation states for both, the Co and V atoms, as formulated for I through IV. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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