Síntesis de complejos de Werner conteniendo ferrocenilchalconas
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Fecha
2019
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Facultad/escuela
Idioma
es
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Universidad Andrés Bello
Nombre de Curso
Licencia CC
Licencia CC
Resumen
Se tiene conocimiento acerca del comportamiento de algunas (E)-3-fenil-1-(2’-hidroxifenil)-2-propen-1-onacomo agentes quelantes en la síntesis de complejos de Werner con iones metálicos tales como Cu (II), Co (II) y Ni (II). La coordinación frente a estos iones metálicos divalentes la logran mediante los grupos hidroxilo y carbonilo, los cuales se ubican en posición orto uno del otro. El objetivo de esta investigación fue reproducir dicho comportamiento en chalconas que contengan en su estructura un grupo ferrocenil, específicamente con las (E)-1-(5’-bromo-2’-hidroxifenil)-3-ferrocenil-2-propen-1-ona y (E)-3-ferrocenil-(2’-hidroxifenil)-2-propen-1-ona frente a centros metálicos de níquel (II), [Ni (II)]y paladio (II), [Pd (II)], y un centro metaloide de boro (III), [B (III),]que presenten una geometría de plana cuadrada, excepto para B (III) de tal manera, que se facilite establecer comunicación entre los hierros de los fragmentos organometálicos de cada ligando ferrocenilchalcona. No obstante, debido a un impedimento estérico, no fue posible obtener los complejos deseados, obteniéndose solo un derivado de boro (III). Asimismo, para comprobar la capacidad quelante del fragmento 5’-bromo-2’-hidroxiacetofenona, se sintetizó 4nuevos complejos conteniendo a Ni(II) y Pd(II). Estos complejos fueron caracterizados mediante técnicas clásicas.
It is known about the behavior of some (E)-3-phenyl-1-(2’-hydroxyphenyl)-2-propen-1-oneas chelating agents in the synthesis of Werner complexes with metal ions such as Cu (II), Co (II) and Ni (II). The coordination with these divalent metal ions is achieved through the hydroxyl and carbonyl groups, which are located ortho to another one.The objective of this research was to reproduce this behavior onchalcones that contain in their structure a ferrocenyl group, specifically with the (E)-1-(5’-bromine-2’-hydroxyphenyl)-3-ferrocenyl-2-propen-1-one and the(E)-3-ferrocenyl-1-(2’-hydroxyphenyl)-2-propen-1-oneagainst metallic centers of boron (III), B (III), nickel (II), Ni (II) and palladium (II), Pd (II), which presentinga square-planar geometry, except forB (III),allow ancommunication between the irons centers of each ferrocenylchalcone ligands. However, maybe due to a steric hindrance, it was not possible to obtain the desired complexes, obtaining only anew boron (III) complex. Likewise, to check the chelating capacity of the 5’-bromine-2’-hydroxyacetophenone, 4new complexes containing Ni (II) and Pd (II) were synthesized. These complexes were characterized by classical technique.
It is known about the behavior of some (E)-3-phenyl-1-(2’-hydroxyphenyl)-2-propen-1-oneas chelating agents in the synthesis of Werner complexes with metal ions such as Cu (II), Co (II) and Ni (II). The coordination with these divalent metal ions is achieved through the hydroxyl and carbonyl groups, which are located ortho to another one.The objective of this research was to reproduce this behavior onchalcones that contain in their structure a ferrocenyl group, specifically with the (E)-1-(5’-bromine-2’-hydroxyphenyl)-3-ferrocenyl-2-propen-1-one and the(E)-3-ferrocenyl-1-(2’-hydroxyphenyl)-2-propen-1-oneagainst metallic centers of boron (III), B (III), nickel (II), Ni (II) and palladium (II), Pd (II), which presentinga square-planar geometry, except forB (III),allow ancommunication between the irons centers of each ferrocenylchalcone ligands. However, maybe due to a steric hindrance, it was not possible to obtain the desired complexes, obtaining only anew boron (III) complex. Likewise, to check the chelating capacity of the 5’-bromine-2’-hydroxyacetophenone, 4new complexes containing Ni (II) and Pd (II) were synthesized. These complexes were characterized by classical technique.
Notas
Unidad de Investigación (Licenciado en Química)
Palabras clave
Complejos de Metales, Chalconas