info:eu-repo/semantics/article
Comparisons of the spectroscopic and microbiological activities among coumarin-3-carboxylate, o-phenanthroline and zinc(II) complexes
Fecha
2018-06-05Registro en:
Islas, María Soledad; Martínez Medina, Juan José; Piro, Oscar Enrique; Echeverría, Gustavo Alberto; Ferrer, Evelina Gloria; et al.; Comparisons of the spectroscopic and microbiological activities among coumarin-3-carboxylate, o-phenanthroline and zinc(II) complexes; Elsevier Science; Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy; 198; 5-6-2018; 212-221
1386-1425
CONICET Digital
CONICET
Autor
Islas, María Soledad
Martínez Medina, Juan José
Piro, Oscar Enrique
Echeverría, Gustavo Alberto
Ferrer, Evelina Gloria
Williams, Patricia Ana María
Resumen
Coumarins (2H-chromen-2-one) are oxygen-containing heterocyclic compounds that belong to the benzopyranones family. In this work we have synthesized different coordination complexes with coumarin-3-carboxylic acid (HCCA), o-phenanthroline (phen) and zinc(II). In the reported [Zn(CCA)2(H2O)2] complex, coumarin-3-carboxylate (CCA) is acting as a bidentate ligand while in the two prepared complexes, [Zn(phen)3]CCA(NO3) (obtained as a single crystal) and [Zn(CCA)2phen].4H2O, CCA is acting as a counterion of the complex cation [Zn(phen)3]+2 or coordinated to the metal center along with phen, respectively. These compounds were characterized on the basis of elemental analysis and thermogravimetry. NMR, FTIR and Raman spectroscopies of the compounds and the CCA potassium salt (KCCA) allow to determine several similarities and differences among them. Finally, their behavior against alkaline phosphatase enzyme and their antimicrobial activities were also measured.