Síntesis, caracterización y actividad antimicrobial de un complejo de pd(ii) con ligante 1,3-difenilpirazol-4-carboxaldehído tiosemicarbazona
Synthesis, characterization and antimicrobial activity of a pd(ii) complex with a 1,3-diphenylpyrazole-4-carboxaldehyde thiosemicarbazone ligand
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En este artículo se describe la síntesis y caracterización de un nuevo complejo de paladio(II), [Pd(Ph2PzTSC)2], con el ligante 1,3-difenilpirazol-4-carboxaldehído tiosemicarbazona (Ph2PzTSC) como una estrategia para mejorar la actividad antimicrobiana del complejo formado. La coordinación del ion metálico y el efecto sinérgico entre estos, conduce a mejorar la actividad biológica del complejo. El ligante se coordina al ion metálico de modo bidentado a través del átomo de nitrógeno del azometino y del azufre en forma de tiol, por la desprotonación del grupo NH-C=S. La actividad antimicrobiana de estos compuestos fue evaluada frente a bacterias Gram-negativas (Escherichia coli, Klebsiella pneumonia, Pseudomonas aeruginosa) y Gram-positivas (Staphylococcus aureus, Bacillus thuringensis) y dos levaduras (Candida albicans y Saccharomyces cerevisiae). Cuando fueron comparados los resultados de la actividad antimicrobiana con la actividad del ligante libre, se observó que la coordinación del Pd(II) mejoró la actividad.
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