The crystal structures of bis[1-ethyl-6-fluoro-4-oxo-7-(piperazin-1-ium-4-yl)-1,4-dihydroquinoline-3-carboxylato]copper(II) sulfate heptahydrate, [Cu(C16H18FN3O3)2]SO4·7H2O or [Cu(nor)2]SO4·7H2O (nor is norfloxacin), and bis{1-[2-(ethylsulfonyl)ethyl]-2-methyl-5-nitroimide}dinitratocopper(II), [Cu(NO3)2(C8H13N3O4S)2] or [Cu(NO3)2(tnz)2] (tnz is tinidazole), were solved by X-ray diffraction. Both complexes crystallize in the space group P21/c, with Z = 4 (for nor) and Z = 2 (for ntz) molecules per unit cell. In [Cu(nor)2]SO4·7H2O, the CuII ion is at the centre of a square-planar environment, trans coordinated to two independent norfloxacin molecules in the zwitterionic form acting as bidentate ligands through one of the carboxyl (cbx) and the carbonyl (cb) O atoms. The solid is further stabilized by an extensive network of N—H...O(sulfate), N—H...O(cbx), N—H...OW, OW—H...O(sulfate) and OW—H...OW hydrogen bonds. The [Cu(NO3)2(tnz)2] complex is centrosymmetric, with the CuII ion in a square planar environment, coordinated to a tinidazole molecule acting as a monodentate ligand through its imidazole N atom and to one nitrate O atom. The vibrational FT–IR absorption spectra and thermal behaviour of the complexes were also studied and are briefly discussed based on the crystal structures.
El aumento de la resistencia bacteriana a los antibióticos comúnmente empleados para el tratamiento de infecciones cutáneas, pone en manifiesto la necesidad de encontrar medicamentos alternativos y eficaces, capaces de contrarrestar este problema de salud que no sólo implica una región, sino que se ha convertido en un problema de salud mundial. Se ha demostrado que un novedoso complejo a base de tinidazol y cobre ([Cu(tnz)2(NO3)2]) posee buena actividad antimicrobiana, sin embargo, para que pueda emplearse como una alternativa para el uso tópico, debe poseer las características necesarias para que pueda ser incorporado, en una formulación que permita su aplicación. Teniendo en cuenta que las formas farmacéuticas semisólidas constituyen el grupo más empleado dentro de las formulaciones dermatológicas; se elaboraron dos tipos formulaciones una tipo crema y otra crema-gel, con el fin de verificar en cuál de ellas incorpora convenientemente el complejo [Cu(tnz)2(NO3)2]. Para ambas formulaciones se determinaron las propiedades organolépticas, pH, área de extensibilidad, viscosidad, y tamaño de partícula,. Los resultados obtenidos evidencian las ventajas de la formulación tipo crema frente a la crema-gel.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.