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Electron Spin Density on the Axial His Ligand of High-Spin and Low-Spin Nitrophorin 2 Probed by Heteronuclear NMR Spectroscopy
(American Chemical Society, 2013-01)
The electronic structure of heme proteins is exquisitely tuned by the interaction of the iron center with the axial ligands. NMR studies of paramagnetic heme systems have been focused on the heme signals, but signals from ...
Kinetics of the reaction of nitric oxide with polypyridylamine iron(II) complexes
(Taylor & Francis Ltd, 2015-06)
The reactions of three polypyridylamine ferrous complexes, [Fe(TPEN)]2+, [Fe(TPPN)]2+, and [Fe(TPTN)]2+, with nitric oxide (NO) (where TPEN = N,N,N′,N′-tetrakis(2-pyridylmethyl)ethylenediamine, TPPN = N,N,N′,N′-tetrakis( ...
Applications of electron spin resonance and spin trapping in tropical parasitic diseases
(2006)
Free radicals may be reaction intermediates in biological systems in more situations than are presently recognized. However, progress in detecting such species by Electron Spin Resonance (ESR) has been relatively slow. ESR ...
Adsorption and structure of copper(II) complexes on a silica gel surface chemically modified with 2-aminothiazole
(1999-07-16)
The isotherms of adsorption of CuX2 (X=Cl-, Br-, ClO- 4) by silica gel chemically modified with 2-aminothiazole were studied in acetone and EtOH solutions, at 25°C. The 2-aminothiazole molecule, covalently bond to the ...
Applications of electron spin, resonance and spin trapping in tropical parasitic diseases
(BENTHAM SCIENCE PUBL LTD, 2006-02)
Free radicals may be reaction intermediates in biological systems in more situations than are presently recognized. However, progress in detecting such species by Electron Spin Resonance (ESR) has been relatively slow. ESR ...
Axial ligand influence on geometries, charge distributions and electronic structures of iron tetraazamacrocycle [Fe((II))TIM(X)(Y)](2+) complexes assessed by Density Functional Theory
(PERGAMON-ELSEVIER SCIENCE LTD, 2011)
We employed the Density Functional Theory along with small basis sets, B3LYP/LANL2DZ, for the study of FeTIM complexes with different pairs of axial ligands (CO, H(2)O, NH(3), imidazole and CH(3)CN). These calculations did ...
Adsorption of copper(II) and cobalt(II) complexes on a silica gel surface chemically modified with 3-amino-1,2,4-triazole
(Elsevier B.V., 1998-12-20)
The isotherms of adsorption of MX2 (M = Cu2+, Co2+; X = Cl-, Br-, ClO4) by silica gel chemically modified with 3-amino-1,2,4-triazole (SiATR) were studied in acetone and ethanol solutions, at 25 degrees C. The 3-amino-1, ...
Charge Ordering in a Pure Spin Model: Dipolar Spin Ice
(Amer Physical Soc, 2013-10-04)
We study the dipolar spin-ice model at fixed density of single excitations, rho, using a Monte Carlo algorithm where processes of creation and annihilation of such excitations are banned. In the limit of rho going to zero, ...