Compuestos de coordinación análogos de biomoléculas. Sístesis y caracterización estructural de complejos metálicos con Dimetilglioxima.
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2018-03-07
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Jaén: Universidad de Jaén
Resumen
[ES] Se han sintetizado y caracterizado desde un punto de vista estructural una serie de complejos de iones de transición con dimetilglioxima y algunos ligandos ancilares, tales como agua, piridina y dimetilaminopiridina. La caracterización ha incluido análisis elemental, espectrometría de masas, espectroscopía infrarroja y medidas de susceptibilidad magnética. En general, la dimetilglioxima parece coordinarse a través de los dos átomos de nitrógeno dando metalociclos de cinco miembros. Todos los complejos parecen contener como base estructural la agrupación plano cuadrada bis-dimetilglioxima- metal, especialmente en el caso de los compuestos de níquel en los que la existencia de potenciales ligandos ancilares no altera la robusta constitución del centro plano cuadrado de níquel.
[EN] A number of transition metal complexes with dimethylglyoxime and several ancillary ligands, such as water, pyridine and dimethylaminopyridine have been synthesized and characterized from a structural point of view. The structural characterization has been made by means of elemental analysis, mass spectrometry, infrared spectroscopy and magnetic measurements. In general, dimethylglyoxime seems to be coordinated through both nitrogen atoms yielding five-membered metallocycles. In the light of the experimental data, it should be suggested that the molecular structure of every complex could be based on the bis- dimethylglyoxime-metal moiety, especially in the nickel{II) compounds in which the presence of potential ancillary ligands doesn't change the quite high stability of the square-planar metal center.
[EN] A number of transition metal complexes with dimethylglyoxime and several ancillary ligands, such as water, pyridine and dimethylaminopyridine have been synthesized and characterized from a structural point of view. The structural characterization has been made by means of elemental analysis, mass spectrometry, infrared spectroscopy and magnetic measurements. In general, dimethylglyoxime seems to be coordinated through both nitrogen atoms yielding five-membered metallocycles. In the light of the experimental data, it should be suggested that the molecular structure of every complex could be based on the bis- dimethylglyoxime-metal moiety, especially in the nickel{II) compounds in which the presence of potential ancillary ligands doesn't change the quite high stability of the square-planar metal center.