Studying high-spin ferric heme proteins by pulsed EPR spectroscopy: Analysis of the ferric form of the E7Q mutant of human neuroglobin

2007 ◽  
Vol 31 (3-4) ◽  
pp. 553-572 ◽  
Author(s):  
F. Trandafir ◽  
P. Heerdt ◽  
M. Fittipaldi ◽  
E. Vinck ◽  
S. Dewilde ◽  
...  
Keyword(s):  
High Spin ◽  
Epr Spectroscopy ◽  
Heme Proteins ◽  
Spectroscopy Analysis ◽  
Pulsed Epr ◽  
Ferric Heme

A Multi-Frequency Pulse EPR and ENDOR Approach to Study Strongly Coupled Nuclei in Frozen Solutions of High-Spin Ferric Heme Proteins

2008 ◽  
Vol 112 (12) ◽  
pp. 3859-3870 ◽  
Author(s):  
M. Fittipaldi ◽  
I. García-Rubio ◽  
F. Trandafir ◽  
I. Gromov ◽  
A. Schweiger ◽  
...  
Keyword(s):  
High Spin ◽  
Heme Proteins ◽  
Strongly Coupled ◽  
Pulse Epr ◽  
Ferric Heme ◽  
Frozen Solutions ◽  
Frequency Pulse

Properties of electrochemically generated primary cationradicals of phenyl- and 2-(4-tolyl)-1,3,4,7-tetramethylisoindoles

1980 ◽  
Vol 45 (6) ◽  
pp. 1669-1676 ◽  
Author(s):  
Pavel Kubáček
Keyword(s):  
Electrochemical Oxidation ◽  
Spin Polarization ◽  
High Spin ◽  
Epr Spectroscopy ◽  
Half Life ◽  
Electrochemical Behaviour ◽  
Epr Spectra ◽  
Electrochemical Generation ◽  
Splitting Constant ◽  
Reduced Temperature

The first step of electrochemical oxidation of 2-phenyl- and 2-(4-tolyl)-1,3,4,7-tetramethylisoindoles in anhydrous acetonitrile produces relatively stable cationradicals which have been studied by means of EPR spectroscopy using the method of internal electrochemical generation of radicals under reduced temperature. The same electrochemical behaviour of the both studied derivatives and identical EPR spectra of their cationradicals can be explained within the Huckel MO method. The largest contribution to the magnitude of splitting constant of nitrogen nucleus is due to π-σ-spin polarization of C-N bonds caused by high spin abundance of pz-AO of carbon atoms. Half-life of decomposition of the studied cationradicals is 4 min at -30°C.

scholarly journals High-spin Metal Centres in Dipolar EPR Spectroscopy

2018 ◽  
Vol 72 (4) ◽  
pp. 216-220 ◽  
Author(s):  
Katharina Keller ◽  
Thomas Wiegand ◽  
Riccardo Cadalbert ◽  
Beat H. Meier ◽  
Anja Böckmann ◽  
...  
Keyword(s):  
High Spin ◽  
Epr Spectroscopy

scholarly journals Aminoxyl Radicals of B/P Frustrated Lewis Pairs: Refinement of the Spin-Hamiltonian Parameters by Field- and Temperature-Dependent Pulsed EPR Spectroscopy

PLoS ONE ◽  
2016 ◽  
Vol 11 (6) ◽  
pp. e0157944 ◽  
Author(s):  
Marcos de Oliveira ◽  
Robert Knitsch ◽  
Muhammad Sajid ◽  
Annika Stute ◽  
Lisa-Maria Elmer ◽  
...  
Keyword(s):  
Epr Spectroscopy ◽  
Spin Hamiltonian ◽  
Frustrated Lewis Pairs ◽  
Temperature Dependent ◽  
Pulsed Epr ◽  
Hamiltonian Parameters ◽  
Aminoxyl Radicals ◽  
Lewis Pairs
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