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Iron(II) complexes containing the 2,6-bis-iminopyridyl moiety : synthesis, characterization, reactivity, and DNA binding
Fe(II) complexes
DNA binding
spin transitions
fluorescence spectra
excitation
Two iron(II) complexes, FeII(pytBuN3)2 (1) and [FeII(pytBuMe2N3)Cl2] (2), with sterically constrained pytBuN3 and pytBuMe2N3 chelate ligands (pytBuN3 = 2,6-bis-(aldiimino)pyridyl; pytBuMe2N3 = 2,6-bis-(ketimino)pyridyl), have been synthesized and characterized by elemental analysis, IR, UV–vis spectra, and preliminary X-ray single-crystal diffraction. The latter revealed that Fe(II) in 1 is six-coordinate by six nitrogen donors from two bisiminopyridines in a distorted octahedron. Complex 2 reacts with thiourea with a second-order rate constant k2 = (2.50 ± 0.05) × 10−3 M−1 s−1 at 296 K, and the reaction seemed to be slow. In a similar way, the interaction of 2 and DNA was studied by fluorescence and absorption spectroscopy. The results revealed that 2 caused fluorescence quenching of DNA through a dynamic quenching procedure. The binding constants KA, Kapp, and KSV as well as the number of binding sites between 2 and DNA were determined.
cris.lastimport.wos | 2024-04-10T02:49:11Z | |
dc.abstract.en | Two iron(II) complexes, [FeII(pytBuN3)2](FeCl4) (1) and [FeII(pytBuMe2N3)Cl2] (2), with sterically constrained pytBuN3 and pytBuMe2N3 chelate ligands (pytBuN3 = 2,6-bis-(aldiimino)pyridyl; pytBuMe2N3 = 2,6-bis-(ketimino)pyridyl), have been synthesized and characterized by elemental analysis, IR, UV–vis spectra, and preliminary X-ray single-crystal diffraction. The latter revealed that Fe(II) in 1 is six-coordinate by six nitrogen donors from two bisiminopyridines in a distorted octahedron. Complex 2 reacts with thiourea with a second-order rate constant k2 = (2.50 ± 0.05) × 10−3 M−1 s−1 at 296 K, and the reaction seemed to be slow. In a similar way, the interaction of 2 and DNA was studied by fluorescence and absorption spectroscopy. The results revealed that 2 caused fluorescence quenching of DNA through a dynamic quenching procedure. The binding constants KA, Kapp, and KSV as well as the number of binding sites between 2 and DNA were determined. | pl |
dc.affiliation | Wydział Chemii : Zakład Chemii Nieorganicznej | pl |
dc.contributor.author | Shaban, Shaban Y. | pl |
dc.contributor.author | El-Shafai, Nagi | pl |
dc.contributor.author | Mansour, Hanaa | pl |
dc.contributor.author | van Eldik, Rudi - 239234 | pl |
dc.date.accessioned | 2015-12-11T10:31:49Z | |
dc.date.available | 2015-12-11T10:31:49Z | |
dc.date.issued | 2015 | pl |
dc.description.number | 12 | pl |
dc.description.physical | 2054-2064 | pl |
dc.description.volume | 68 | pl |
dc.identifier.doi | 10.1080/00958972.2015.1031656 | pl |
dc.identifier.eissn | 1029-0389 | pl |
dc.identifier.eissn | 1026-7441 | pl |
dc.identifier.issn | 0095-8972 | pl |
dc.identifier.uri | http://ruj.uj.edu.pl/xmlui/handle/item/18109 | |
dc.language | eng | pl |
dc.language.container | eng | pl |
dc.rights.licence | bez licencji | |
dc.subject.en | Fe(II) complexes | pl |
dc.subject.en | DNA binding | pl |
dc.subject.en | spin transitions | pl |
dc.subject.en | fluorescence spectra | pl |
dc.subject.en | excitation | pl |
dc.subtype | Article | pl |
dc.title | Iron(II) complexes containing the 2,6-bis-iminopyridyl moiety : synthesis, characterization, reactivity, and DNA binding | pl |
dc.title.journal | Journal of Coordination Chemistry | pl |
dc.type | JournalArticle | pl |
dspace.entity.type | Publication |