Synthesis and structural characterization of Keggin polyoxometalate compounds with argininium(2+) cations
| Autor: | Michael Belsley, Vítor Félix, Filipe M. Santos, E. de Matos Gomes, Ana M. V. Cavaleiro, Paula Brandão |
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| Rok vydání: | 2010 |
| Předmět: |
Hydrogen bond
Chemistry Organic Chemistry Inorganic chemistry 02 engineering and technology Crystal structure Triclinic crystal system 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Analytical Chemistry Ion Characterization (materials science) Inorganic Chemistry Crystallography Polyoxometalate Thermal stability 0210 nano-technology Thermal analysis Spectroscopy |
| Zdroj: | Journal of Molecular Structure. 963:267-273 |
| ISSN: | 0022-2860 |
| Popis: | New organic–inorganic hybrid compounds, with formula (H2Arg)3[PM12O40]2·4H2O and (H2Arg)4[SiM12O40]·nH2O (n = 0–1), where Arg = L-arginine and M = Mo, W, were prepared and characterized by analytical, spectroscopic, and X-ray diffraction techniques. Thermal analysis was performed to study their thermal stability. The crystal structure of (H2Arg)3[PMo12O40]2·15H2O·EtOH (triclinic, space group P1, Z = 1) was determined by X-ray diffraction. The chiral H2Arg2+ cations and the Keggin anions are involved in hydrogen bonding interactions which lead to the formation of an infinite three-dimensional network. This study adds new members to the important family of argininium/inorganic anions hybrid salts. To our best knowledge these are the first compounds of diprotonated arginine and Keggin-type polyoxoanions and also the first crystal structure determination of an argininium(2+) compound with an inorganic anion of the polyoxometalate family. |
| Databáze: | OpenAIRE |
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