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dc.contributor.authorErxleben, Andrea
dc.contributor.authorColeman, Fergal
dc.date.accessioned2014-01-21T15:25:44Z
dc.date.available2014-01-21T15:25:44Z
dc.date.issued2012
dc.identifier.citationColeman, F,Erxleben, A (2012) 'Rapid hydrolysis of phosphate monoesters by zirconium(IV) complexes in neutral solution'. Polyhedron, 48 :104-109.en_US
dc.identifier.urihttp://hdl.handle.net/10379/3985
dc.description.abstractThree zirconium(IV) complexes (1-3) with mono- and dinucleating tripodal ligands are reported that promote the hydrolysis of the phosphate monoesters p-nitrophenyl phosphate (NPP) and phenyl phosphate (PP) in neutral solution. At pH 7 up to 10(4)- and 10(6)-fold rate accelerations of the hydrolysis of NPP and PP are observed. A detailed kinetic study has been carried out for NPP. The complexes show Michaelis-Menten behavior, k(cat) and 1/K-m values at pH 7.0, 25 degrees C are 2.7 x 10(-5) s(-1) and 806 M-1 (1), 1.1 x 10(-4) s(-1) and 556 M-1 (2) and 1.1 x 10(-4) s(-1) and 565 M-1 (3). Entropies of activation of -92.0 J K-1 mol(-1) (1), -75.6 J K-1 mol(-1) (2) and -98.6 J K-1 mol(-1) (3) are consistent with an associative mechanism.en_US
dc.formatapplication/pdfen_US
dc.language.isoenen_US
dc.relation.ispartofPolyhedronen
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Ireland
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/3.0/ie/
dc.subjectZirconiumen_US
dc.subjectCatalysisen_US
dc.subjectPhosphate ester hydrolysisen_US
dc.subjectP-nitrophenyl phosphateen_US
dc.subjectReactivityen_US
dc.subjectDiestersen_US
dc.subjectModelen_US
dc.subjectPhosphorothioateen_US
dc.titleRapid hydrolysis of phosphate monoesters by zirconium(IV) complexes in neutral solutionen_US
dc.typeArticleen_US
dc.date.updated2013-11-01T17:19:11Z
dc.identifier.doihttp://dx.doi.org/10.1016/j.poly.2012.09.015
dc.local.publishedsourcehttp://dx.doi.org/10.1016/j.poly.2012.09.015en_US
dc.description.peer-reviewedpeer-reviewed
dc.contributor.funder|~|
dc.internal.rssid3117671
dc.local.contactAndrea Erxleben, School Of Chemistry, Room 150, Arts/Science Building, Nui Galway. 2483 Email: andrea.erxleben@nuigalway.ie
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