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Mechanistic information on the reversible binding of NO to selected iron(II) chelates from activation parameters

Mechanistic information on the reversible binding ...

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dc.contributor.author Schneppensieper, Thorsten pl
dc.contributor.author Wanat, Alicja pl
dc.contributor.author Stochel, Grażyna [SAP11011061] pl
dc.contributor.author van Eldik, Rudi [SAP14007947] pl
dc.date.accessioned 2015-08-28T12:10:09Z
dc.date.available 2015-08-28T12:10:09Z
dc.date.issued 2002 pl
dc.identifier.issn 0020-1669 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/15145
dc.language eng pl
dc.title Mechanistic information on the reversible binding of NO to selected iron(II) chelates from activation parameters pl
dc.type JournalArticle pl
dc.description.physical 2565-2573 pl
dc.abstract.en Mechanistic insight on the reversible binding of NO to Fe II chelate complexes as potential catalysts for the removal of NO from effluent gas streams has been obtained from the temperature and pressure parameters for the “on” and “off” reactions determined using a combination of flash photolysis and stopped-flow techniques. These parameters are correlated with those for water exchange reactions on the corresponding Fe II and Fe III chelate complexes, from which mechanistic conclusions are drawn. Small and positive ¢ V q values are found for NO binding to and release from all the selected complexes, consistent with a dissociative interchange (I d ) mechanism. The only exception in the series of studied complexes is the binding of NO to [Fe II (nta)(H 2 O) 2 ] - . The negative volume of activation observed for this reaction supports the operation of an I a ligand substitution mechanism. The apparent mechanistic differences can be accounted for in terms of the electronic and structural features of the studied complexes. The results indicate that the aminocarboxylate chelates affect the rate and overall equilibrium constants, as well as the nature of the substitution mechanism by which NO coordinates to the selected complexes. There is, however, no simple correlation between the rate and activation parameters and the selected donor groups or overall charge on the iron(II) complexes pl
dc.description.volume 41 pl
dc.description.number 9 pl
dc.identifier.doi 10.1021/ic011220w pl
dc.identifier.eissn 1520-510X pl
dc.title.journal Inorganic Chemistry pl
dc.language.container eng pl
dc.affiliation Wydział Chemii : Zakład Chemii Nieorganicznej pl
dc.subtype Article pl

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