Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.11889/4316
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dc.contributor.authorAbu Hijleh, Abdullatif-
dc.contributor.authorWoods, Clifton-
dc.contributor.authorBogas, Ekaterini-
dc.contributor.authorLe Guenniou, Gaelle-
dc.date.accessioned2017-02-25T09:51:25Z-
dc.date.available2017-02-25T09:51:25Z-
dc.date.issued1992-
dc.identifier.urihttp://hdl.handle.net/20.500.11889/4316-
dc.descriptionCatecholase activities of mononuclear copper aspirinateen_US
dc.description.abstractFour mononuclear copper(II) complexes have been prepared by allowing copper(II) aspirinate to react with benzimidazole, 2-methylbenzimidazole, metronidazole or 2-methyl-5nitrobenzimidazoIe Iigands. Elemental analyses, UV-Vis, IR, EPR and magnet moment data are consistent with mononuclear square planar complexes that contain two aspirinate Iigands and two N-containing ligands to give a CuOrN, chromophore. The benzimidazole, 2-methylbenzimidazole and metronidazole complexes catalyze the oxidation of catechol to o-quinone. This reaction was monitored spectrophotometrically by following the increase in intensity of the o-quinone band at 390 nm with time. Enzyme-mimetic activity of these copper complexes was determined and expressed as micromoles of substrate per mg catalyst per min. The activities were found to be 0.314 for the benzimidazole complex, 0.0998 for the 2-methylbenzimidazole complex, and 0.129 for the metronidazole complex. In the case of the 2-methyl-5-nitrobenzimidazoIe complex the initial formation of o-quinone is very rapid; however, after 2-3 min the catalyst is poisoned and the concentration of o-quinone drops slightly and remains constant.en_US
dc.description.sponsorshipBirzeit University and the University of Tennesseeen_US
dc.language.isoen_USen_US
dc.publisherElsevieren_US
dc.subjectCopper aspirinate - Synthesisen_US
dc.subjectCopper compounds - Synthesisen_US
dc.subjectCopper compounds - Structureen_US
dc.subject.lcshCopper ions-
dc.subject.lcshCopper compounds - Spectra-
dc.subject.lcshCopper enzymes-
dc.titleSynthesis, characterization and catecholase-mimetic activity of mononuclear copper(II) aspirinate complexesen_US
dc.typeArticleen_US
newfileds.departmentScienceen_US
newfileds.corporate-authorClifton Woods, Ekaterini Bogas, and Gaelle Le Guennioutten_US
newfileds.item-access-typeopen_accessen_US
newfileds.thesis-prognoneen_US
newfileds.general-subjectNatural Sciences | العلوم الطبيعيةen_US
item.grantfulltextopen-
item.languageiso639-1other-
item.fulltextWith Fulltext-
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