Robust Iron Coordination Complexes with N-Based Neutral Ligands As Efficient Fenton-Like Catalysts at Neutral pH

2013 ◽  
Vol 47 (17) ◽  
pp. 9918-9927 ◽  
Author(s):  
Maite Canals ◽  
Rafael Gonzalez-Olmos ◽  
Miquel Costas ◽  
Anna Company
Keyword(s):  
Coordination Complexes ◽  
Neutral Ph ◽  
Iron Coordination ◽  
Neutral Ligands

scholarly journals A bottom up approach towards artificial oxygenases by combining iron coordination complexes and peptides

2017 ◽  
Vol 8 (5) ◽  
pp. 3660-3667 ◽  
Author(s):  
Olaf Cussó ◽  
Michael W. Giuliano ◽  
Xavi Ribas ◽  
Scott J. Miller ◽  
Miquel Costas
Keyword(s):  
Hydrogen Peroxide ◽  
Coordination Complexes ◽  
Asymmetric Epoxidation ◽  
Coordination Complex ◽  
High Yield ◽  
Aqueous Hydrogen Peroxide ◽  
Bottom Up ◽  
Iron Coordination

The combination of peptides and a chiral iron coordination complex catalyzes high yield highly asymmetric epoxidation with aqueous hydrogen peroxide.

scholarly journals Tracking excited-state charge and spin dynamics in iron coordination complexes

Nature ◽  
2014 ◽  
Vol 509 (7500) ◽  
pp. 345-348 ◽  
Author(s):  
Wenkai Zhang ◽  
Roberto Alonso-Mori ◽  
Uwe Bergmann ◽  
Christian Bressler ◽  
Matthieu Chollet ◽  
...  
Keyword(s):  
Excited State ◽  
Spin Dynamics ◽  
Coordination Complexes ◽  
Iron Coordination ◽  
State Charge

Coordination complexes of silicon and germanium halides with neutral ligands

2011 ◽  
Vol 255 (11-12) ◽  
pp. 1319-1341 ◽  
Author(s):  
William Levason ◽  
Gillian Reid ◽  
Wenjian Zhang
Keyword(s):  
Coordination Complexes ◽  
Neutral Ligands ◽  
Silicon And Germanium

scholarly journals Design of Iron Coordination Complexes as Highly Active Homogenous Water Oxidation Catalysts by Deuteration of Oxidation-Sensitive Sites

2018 ◽  
Vol 141 (1) ◽  
pp. 323-333 ◽  
Author(s):  
Zoel Codolà ◽  
Ilaria Gamba ◽  
Ferran Acuña-Parés ◽  
Carla Casadevall ◽  
Martin Clémancey ◽  
...  
Keyword(s):  
Water Oxidation ◽  
Coordination Complexes ◽  
Oxidation Catalysts ◽  
Highly Active ◽  
Iron Coordination

scholarly journals Isomers in the chemistry of iron coordination compounds

2010 ◽  
Vol 8 (5) ◽  
pp. 965-991 ◽  
Author(s):  
Milan Melnik ◽  
Mária Kohútová
Keyword(s):  
Coordination Chemistry ◽  
Bond Length ◽  
Iron Atom ◽  
Coordination Compounds ◽  
Structural Data ◽  
Coordination Complexes ◽  
Oxidation States ◽  
Wide Field ◽  
Iron Coordination ◽  
Atom Bond

AbstractThe coordination chemistry of iron covers a wide field, as shown by a survey covering the crystallographic and structural data of almost one thousand and three hundred coordination complexes. About 6.7% of these complexes exist as isomers and are summarized in this review. Included are distortion (96.6%) and cis — trans (3.4%) isomers. These are discussed in terms of the coordination about the iron atom, bond length and interbond angles. Distortion isomers, differing only by degree of distortion in Fe-L, Fe-L-Fe and L-Fe-L parameters, are the most common. Iron is found in the oxidation states zero, +2 and +3 of which +3 is most common. The stereochemistry around iron centers are tetrahedral, five — coordinated (mostly trigonal — bipyramid) and six — coordinated. The most common ligands have O and N donor sites.

scholarly journals Manipulating charge transfer excited state relaxation and spin crossover in iron coordination complexes with ligand substitution

2017 ◽  
Vol 8 (1) ◽  
pp. 515-523 ◽  
Author(s):  
Wenkai Zhang ◽  
Kasper S. Kjær ◽  
Roberto Alonso-Mori ◽  
Uwe Bergmann ◽  
Matthieu Chollet ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Free Electron ◽  
Free Electron Laser ◽  
Spin Crossover ◽  
Coordination Complexes ◽  
Ligand Substitution ◽  
X Ray ◽  
Laser Measurements ◽  
Iron Coordination

Optical and X-ray free-electron laser measurements reveal ligand substitution in an Fe(ii)-centered complex extends its MLCT lifetime.

scholarly journals Antioxidant Properties and the Formation of Iron Coordination Complexes of 8-Hydroxyquinoline

2018 ◽  
Vol 19 (12) ◽  
pp. 3917 ◽  
Author(s):  
Vladimir Chobot ◽  
Franz Hadacek ◽  
Gert Bachmann ◽  
Wolfram Weckwerth ◽  
Lenka Kubicova
Keyword(s):  
Brine Shrimp ◽  
Biological Activities ◽  
Antioxidant Properties ◽  
Complex Mixture ◽  
Differential Pulse ◽  
Coordination Complexes ◽  
Hydroxyl Group ◽  
Iron Coordination ◽  
Pulse Voltammetry ◽  
Antioxidant Effects

Background: The alkaloid 8-hydroxyquinoline (8HQ) is well-known for various biological activities, including antioxidant effects and especially for the formation of coordination complexes with various transition metals, such as iron, amongst others. Therefore, 8HQ was extensively explored as a promising antineurodegenerative agent. However, other authors noted pro-oxidant effects of 8HQ. Here, we explore the pro- and antioxidant properties of 8HQ, especially in context of coordination complexes with iron (II) and iron (III). Methods: Nano-electrospray−mass spectrometry, differential pulse voltammetry, deoxyribose degradation, iron (II) autoxidation, and brine shrimp mortality assays were used. Results: 8HQ formed a complex mixture of coordination complexes with iron (II) and iron (III). Furthermore, 8HQ showed antioxidant effects but no pro-oxidant ones. In the brine shrimp mortality assay, 8HQ demonstrated toxicity that decreased in the presence of iron (III). Conclusions: 8HQ is a potent antioxidant whose effects depend not only on the formation of the coordination complexes with iron ions, but surely on the scavenging activities due to the redox properties of the 8-hydroxyl group. No pro-oxidant effects were observed in the set of the used assays.

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