UV-vis, IR and 1H NMR spectroscopic studies and characterization of ionic-pair crystal violet-oxytetracycline
Author
dc.contributor.author
Orellana Donoso, Sandra
Author
dc.contributor.author
Soto, César
Author
dc.contributor.author
Toral Ponce, María
Admission date
dc.date.accessioned
2018-12-20T14:12:24Z
Available date
dc.date.available
2018-12-20T14:12:24Z
Publication date
dc.date.issued
2010
Cita de ítem
dc.identifier.citation
Spectrochimica Acta Part A 75 (2010) 437–443
Identifier
dc.identifier.issn
13861425
Identifier
dc.identifier.other
10.1016/j.saa.2009.11.002
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/154765
Abstract
dc.description.abstract
The present study shows the formation and characterization of the ionic-pair between the antibiotic oxytetracycline and the dye crystal violet in ammonia solution pH 9.0 ± 0.2 extracted into chloroform. The characterization was demonstrated using UV-vis spectrophotometry, 1H NMR, measurement of relaxation times T1 and IR spectroscopy, using a comparison between the signals of individual pure compounds with the signals with the mixture CV-OTC in different alkaline media. The formation of ionic-pair was also corroborated by new signals and chemical shifts. (2D) NMR spectroscopy experiments show that the interaction is electrostatic