Results 261 to 270 of about 101,690 (303)

On the existence of intermediate compounds between hemoglobin (wholly ferrous) and methemoglobin (wholly ferric)

Experientia, 1947
Experimentelle Befunde vonDarling undRoughton wurden mathematisch mittels der stochiometrischen Gleichung analysiert. Entgegen der Meinung jener Versuche sind der vorgenannten Gleichung nach in einer Losung von Hamoglobin plus Methamoglobin (durch Ferrizyanid) nur Molekule anwesend, deren vier Eisenatome alle in dem Ferro- bzw. in dem Ferrizustand sind.
E, BOERI, A, VESCIA
openaire   +2 more sources

Sign of the Nuclear Quadrupole Coupling Constants in Some Ionic Ferrous Compounds

The Journal of Chemical Physics, 1966
Nuclear quadrupole coupling constants have previously been determined for a large number of iron-containing compounds by using the Mössbauer effect. In general, the sign of the coupling constant has not been determined although this parameter can have interesting structural implications. We have used the magnetic perturbation technique to determine the
R. W. Grant, H. Wiedersich, A. H. Muir, U. Gonser, W. N. Delgass   +4 more
openaire   +1 more source

Mössbauer isomer-shift of ferrous iron impurities in ionic and covalent binary compounds

Journal of Physics and Chemistry of Solids, 2019
Abstract We have developed an empirical model to determine Mossbauer isomer-shift of dilute Fe2+ impurities in ionic and covalent binary compounds, where at least one of the host belongs to the metalloids or non-metals category of the periodic system.
H.P. Gunnlaugsson, H. Masenda
openaire   +1 more source

Effect of Pressure on the Spin State of Iron in Ferrous Phenanthroline Compounds

The Journal of Chemical Physics, 1971
The effect of pressure to 175 kbar has been measured on the spin state of Fe(II) in bis- and trisphenanthroline complexes, using Mössbauer resonance and optical absorption. The bis complexes can be classified according to the degree of back bonding to the nonphenanthroline ligands. Compounds with halide ligands are high spin at low pressure.
D. C. Fisher, H. G. Drickamer
openaire   +1 more source

Compound-Layer-Free Nitriding of Ferrous Metals Using Electron-Beam-Excited Nitrogen Plasma

Japanese Journal of Applied Physics, 2007
The nitriding of ferrous metals is primarily carried out to improve the surface hardness resulting from the formation of nitrogen compounds and diffused atomic nitrogen. In this study, we detail the achievements of the compound-layer-free nitriding of ferrous metallic surfaces using a low-power electron-beam-excited plasma in a nitrogen atmosphere. The
Yasuhiro Hara, Yasuharu Yoshikawa, Tamio Hara, Petros Abraha   +3 more
openaire   +1 more source

ChemInform Abstract: COMPLEXES OF FERROUS PHTHALOCYANINE WITH AROMATIC NITROSO COMPOUNDS, ISOCYANIDES, AND PHOSPHITES

Chemischer Informationsdienst, 1976
AbstractDer Fe‐Komplex (Ia) reagiert mit aromatischen Nitrosoverbindungen zu den Komplexen (Ib), während (Ic) durch Einwirkung von N‐Methylimidazol auf den Bis‐[cyclohexylisocyanid)‐eisen(IIyphthalocyaninkomplex und (Id) durch Umsetzung von Nitrosotoluol mit (Ia) in Gegenwart von N‐Methylimidazol erhalten wurden.
JAMES J. WATKINS, ALAN L. BALCH
openaire   +1 more source

Erratum: Sign of the Nuclear Quadrupole Coupling Constants in Some Ionic Ferrous Compounds

The Journal of Chemical Physics, 1967
Nuclear quadrupole coupling constants have previously been determined for a large number of iron‐containing compounds by using the Mossbauer effect. In general, the sign of the coupling constant has not been determined although this parameter can have interesting structural implications. We have used the magnetic perturbation technique to determine the
R. W. Grant, H. Wiedersich, A. H. Muir, U. Gonser, W. N. Delgass   +4 more
openaire   +1 more source

FERROUS NITROSO COMPOUNDS

Journal of the American Chemical Society, 1929
H. I. Schlesinger, H. B. Van Valkenburgh
openaire   +1 more source

Ferrous Complexes and Chelating Compounds in Suppression of Fungal Diseases of Cereals

1986
The involvement of iron in fungal development has been studied from three main aspects; acquisition of iron in iron deficient environments, suppression of pathogenic fungi by iron deprivation and the displacement of inhibitory iron within conidia to activate the germination mechanism.
openaire   +1 more source

Standardization of 2,6-Dichlorophenolindophenol with Ferrous Compounds

Industrial & Engineering Chemistry Analytical Edition, 1938
A. J. Lorenz, L. J. Arnold
openaire   +1 more source