Relation of isomeric shift and quadrupole splitting in M�ssbauer spectra to electronic structure for the iron atom

1968 ◽  
Vol 2 (4) ◽  
pp. 382-386 ◽  
Author(s):  
V. I. Gol'danskii ◽  
E. F. Makarov ◽  
R. A. Stukan
Keyword(s):  
Electronic Structure ◽  
Quadrupole Splitting ◽  
Iron Atom ◽  
Isomeric Shift

scholarly journals EPR Spectroscopy Study of the Radical Cation Cluster (η⁵-C₅H₅)(CO)₅ReFePt(μ₃-C=CHPh)(η²-Ph₂P(CH₂)₂PPh₂)

2019 ◽  
pp. 573-579
Author(s):  
Nikolay G. Maksimov ◽  
Victor V. Verpekin ◽  
Dmitry V. Zimonin ◽  
Galina V. Burmakina ◽  
Oleg S. Chudin ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Low Temperature ◽  
Radical Cation ◽  
Unpaired Electron ◽  
Iron Atom ◽  
Epr Spectroscopy ◽  
Binuclear Complex ◽  
Chemical Oxidation ◽  
Spectroscopy Study ◽  
Model Spectrum

The chemical oxidation of the cluster CpReFePt(μ3-C=CHPh)(CO)5(dppe) (Cp = η5-C5H5, dppe = η2- Ph2P(CH2)2PPh2) resulted in a radical cation [CpReFePt(μ3-C=CHPh)(CO)5(dppe)]+• that is sufficiently stable only at low temperature. An electronic structure of the radical cation was studied by EPR and following parameters were obtained by comparison of the experimental and model spectrum: gx = 2.070 gy = 2.0295 gz = 1.997; Ax(31P) = 17 Ay(31P) = 49 Az(31P) = 35 (Gs);Ax(195Pt) = 62 Ay(195Pt) = 45 Az(195Pt) = 105 (Gs). An unpaired electron is seen to be mainly concentrated on the iron atom (85-90%) and partially on the platinum atom (10-15%). Further transformation of the radical cation led to the formation of the binuclear complex Cp(CO)2RePt(μ-C=CHPh)(dppe) and the Fe-carbonyl fragment

Mössbauer Effect in Biomedical Research: Variations of Quadrupole Splitting in Relation to the Qualitative Changes of Biomolecules

1996 ◽  
Vol 51 (5-6) ◽  
pp. 381-388 ◽  
Author(s):  
M. I. Oshtrakh
Keyword(s):  
Electronic Structure ◽  
Quadrupole Splitting ◽  
Biomedical Research ◽  
Mössbauer Effect ◽  
Molecular Level ◽  
Mossbauer Effect ◽  
New Information ◽  
Mössbauer Parameters ◽  
Small Change ◽  
Qualitative Changes

Abstract This review deals with studies of the variations of quadrupole splitting, electronic structure and stereochemistry of iron associated with qualitative changes of biomolecules. The possibility to determine various iron containing species resulting from the destruction of biomolecules using Mössbauer parameters is shown. A small change of iron stereochemistry leads to a small change of the iron electronic structure which could be detected by small changes of quadrupole splitting. It is expected that quadrupole splitting of iron gives new information for biomedical research on a molecular level.

Mössbauer Spectroscopic Investigation of the Cesium Suboxoferrate(III) Cs9FeO4

2011 ◽  
Vol 66 (5) ◽  
pp. 441-443
Author(s):  
Constantin Hoch ◽  
Inga Schellenberg ◽  
Rainer Pöttgen
Keyword(s):  
Isomer Shift ◽  
Quadrupole Splitting ◽  
Oxidation State ◽  
Iron Atom ◽  
Spectroscopic Investigation ◽  
Small Deviation ◽  
Spectroscopic Studies ◽  
Tetrahedral Symmetry ◽  
Formal Oxidation State ◽  
Good Agreement

57Fe Mössbauer spectroscopic studies have shown that in cesium suboxoferrate, Cs9FeO4, the iron atom has the formal oxidation state +III. The isomer shift δ = 0.10(1) is in very good agreement with that of a large number of ionic ferrates(III). The same holds for geometrical details of the [FeO4]5− anion, which shows only a small deviation from ideal tetrahedral symmetry giving rise to a quadrupole splitting of ΔEQ = 0.36(2) mm/s

Electronic structure and Mössbauer isomer shift of the iron atom isolated in a crystalline argon matrix

1980 ◽  
Vol 22 (11) ◽  
pp. 5128-5134 ◽  
Author(s):  
M. Braga ◽  
A. R. Riego ◽  
J. Danon
Keyword(s):  
Electronic Structure ◽  
Isomer Shift ◽  
Iron Atom ◽  
Argon Matrix ◽  
Mössbauer Isomer Shift

Mössbauer determinations of isomeric shift and quadrupole splitting in some I129 compounds

1963 ◽  
Vol 5 (3) ◽  
pp. 217-220 ◽  
Author(s):  
H. De Waard ◽  
G. De Pasquali ◽  
D. Hafemeister
Keyword(s):  
Quadrupole Splitting ◽  
Isomeric Shift

The electronic structure of a substitutional iron atom impurity in palladium

1981 ◽  
Vol 11 (7) ◽  
pp. 1423-1433 ◽  
Author(s):  
A Rodriquez ◽  
J Keller
Keyword(s):  
Electronic Structure ◽  
Iron Atom
Sign in / Sign up

Export Citation Format

Share Document