Nickel Oxidation States and Spin States of Bioinorganic Complexes from Nickel L-edge X-ray Absorption and Resonant Inelastic X-ray Scattering

2013 ◽  
Vol 117 (47) ◽  
pp. 24767-24772 ◽  
Author(s):  
Hongxin Wang ◽  
Sergei M. Butorin ◽  
Anthony T. Young ◽  
Jinghua Guo
Keyword(s):  
Oxidation States ◽  
Spin States ◽  
X Ray ◽  
Nickel Oxidation ◽  
X Ray Scattering ◽  
X Ray Absorption ◽  
Ray Scattering

scholarly journals Vibrational resonant inelastic X-ray scattering in liquid acetic acid: a ruler for molecular chain lengths

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Viktoriia Savchenko ◽  
Iulia Emilia Brumboiu ◽  
Victor Kimberg ◽  
Michael Odelius ◽  
Pavel Krasnov ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Acetic Acid ◽  
Molecular Chain ◽  
X Ray ◽  
X Ray Scattering ◽  
Localized Excitations ◽  
Vibrational Excitations ◽  
Chain Lengths ◽  
X Ray Absorption ◽  
Ray Scattering

AbstractQuenching of vibrational excitations in resonant inelastic X-ray scattering (RIXS) spectra of liquid acetic acid is observed. At the oxygen core resonance associated with localized excitations at the O–H bond, the spectra lack the typical progression of vibrational excitations observed in RIXS spectra of comparable systems. We interpret this phenomenon as due to strong rehybridization of the unoccupied molecular orbitals as a result of hydrogen bonding, which however cannot be observed in x-ray absorption but only by means of RIXS. This allows us to address the molecular structure of the liquid, and to determine a lower limit for the average molecular chain length.

scholarly journals Crystalline and magnetic structure of Ba2CuO3+δ investigated by x-ray absorption spectroscopy and resonant inelastic x-ray scattering

2020 ◽  
pp. 1353810
Author(s):  
Roberto Fumagalli ◽  
Abhishek Nag ◽  
Stefano Agrestini ◽  
Mirian Garcia-Fernandez ◽  
Andrew C. Walters ◽  
...  
Keyword(s):  
Magnetic Structure ◽  
Absorption Spectroscopy ◽  
X Ray ◽  
X Ray Scattering ◽  
X Ray Absorption ◽  
Ray Scattering

scholarly journals Structure of the manganese complex in photosystem II: insights from X–ray spectroscopy

2002 ◽  
Vol 357 (1426) ◽  
pp. 1347-1358 ◽  
Author(s):  
Vittal K. Yachandra
Keyword(s):  
Fine Structure ◽  
Emission Spectroscopy ◽  
Structural Models ◽  
Oxidation States ◽  
X Ray ◽  
X Ray Scattering ◽  
Raman Process ◽  
Mn Cluster ◽  
X Ray Absorption ◽  
S States

We have used Mn K–edge absorption and Kβ emission spectroscopy to determine the oxidation states of the Mn complex in the various S states. We have started exploring the new technique of resonant inelastic X–ray scattering spectroscopy; this technique can be characterized as a Raman process that uses K–edge energies (1s to 4p, ca . 6550 eV) to obtain L–edge–like spectra (2p to 3d, ca . 650 eV). The relevance of these data to the oxidation states and structure of the Mn complex is presented. We have obtained extended X–ray absorption fine structure data from the S 0 and S 3 states and observed heterogeneity in the Mn–Mn distances leading us to conclude that there may be three rather than two di– μ –oxo–bridged units present per tetranuclear Mn cluster. In addition, we have obtained data using Ca and Sr X–ray spectroscopy that provide evidence for a heteronuclear Mn1Ca cluster. The possibility of three di– μ –oxo–bridged Mn–Mn moieties and the proximity of Ca is incorporated into developing structural models for the Mn cluster. The involvement of bridging and terminal O ligands of Mn in the mechanism of oxygen evolution is discussed in the context of our X–ray spectroscopy results.

Note: Construction of x-ray scattering and x-ray absorption fine structure beamline at the Pohang Light Source

2010 ◽  
Vol 81 (2) ◽  
pp. 026103 ◽  
Author(s):  
Ik-Jae Lee ◽  
Chung-Jong Yu ◽  
Young-Duck Yun ◽  
Chae-Soon Lee ◽  
In Deuk Seo ◽  
...  
Keyword(s):  
Fine Structure ◽  
Light Source ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Scattering ◽  
Pohang Light Source ◽  
X Ray Absorption ◽  
Ray Scattering

scholarly journals 1s2p resonant inelastic X-ray scattering combined dipole and quadrupole analysis method

2017 ◽  
Vol 24 (1) ◽  
pp. 296-301 ◽  
Author(s):  
Alexander Bagger ◽  
Ties Haarman ◽  
Anna Puig Molina ◽  
Poul George Moses ◽  
Hirofumi Ishii ◽  
...  
Keyword(s):  
Continuum Model ◽  
Analysis Method ◽  
Exciton Model ◽  
X Ray ◽  
Additional Information ◽  
X Ray Scattering ◽  
Analysis Strategy ◽  
X Ray Absorption ◽  
The Continuum ◽  
Ray Scattering

In this study an analysis strategy towards using the resonant inelastic X-ray scattering (RIXS) technique more effectively compared with X-ray absorption spectroscopy (XAS) is presented. In particular, the question of when RIXS brings extra information compared with XAS is addressed. To answer this question the RIXS plane is analysed using two models: (i) an exciton model and (ii) a continuum model. The continuum model describes the dipole pre-edge excitations while the exciton model describes the quadrupole excitations. Applying our approach to the experimental 1s2p RIXS planes of VO2 and TiO2, it is shown that only in the case of quadrupole excitations being present is additional information gained by RIXS compared with XAS. Combining this knowledge with methods to calculate the dipole contribution in XAS measurements gives scientists the opportunity to plan more effective experiments.

A furnace to 1200 K for in situ heating x-ray diffraction, small angle x-ray scattering, and x-ray absorption fine structure experiments

2008 ◽  
Vol 79 (12) ◽  
pp. 126101 ◽  
Author(s):  
Quan Cai ◽  
Qiang Wang ◽  
Wei Wang ◽  
Guang Mo ◽  
Kunhao Zhang ◽  
...  
Keyword(s):  
Fine Structure ◽  
Small Angle ◽  
X Ray Diffraction ◽  
X Ray ◽  
Absorption Fine ◽  
X Ray Scattering ◽  
In Situ Heating ◽  
X Ray Absorption ◽  
Ray Scattering

Confocal X-ray technology based on capillary X-ray optics

2015 ◽  
Vol 34 (1-2) ◽  
Author(s):  
Tianxi Sun ◽  
Xunliang Ding
Keyword(s):  
Life Science ◽  
Food Science ◽  
X Ray Diffraction ◽  
Ray Optics ◽  
X Ray ◽  
X Ray Scattering ◽  
X Ray Imaging ◽  
X Ray Absorption ◽  
Security Check ◽  
Ray Scattering

AbstractCapillary X-ray optics is versatile, and it can be used with synchrotron radiation source, conventional X-ray source, laser-plasma ultrafast X-ray source, and so forth. Recently, the confocal X-ray technology based on capillary X-ray optics has become popular, and it has been widely used in X-ray fluorescence, X-ray absorption fine structure, X-ray diffraction, small-angle X-ray scattering, X-ray imaging, and X-ray scattering. This confocal X-ray technology has applications in many fields, including environmental monitoring, food science, life science, chemistry, physics, nanomaterials, nondestructive test, security check, and so on.

scholarly journals X-ray absorption and resonant inelastic x-ray scattering in the rare earths

1998 ◽  
Vol 58 (7) ◽  
pp. 3741-3749 ◽  
Author(s):  
Michel van Veenendaal ◽  
Robert Benoist
Keyword(s):  
Rare Earths ◽  
X Ray ◽  
X Ray Scattering ◽  
X Ray Absorption ◽  
Ray Scattering

Dysprosium compounds studied by resonant inelastic X-ray scattering and high-resolution X-ray absorption near edge structure spectroscopy

2008 ◽  
Vol 71 (2) ◽  
pp. 516-522
Author(s):  
K.J. Zhou ◽  
M.Q. Cui ◽  
W. Hua ◽  
C.Y. Ma ◽  
Y.D. Zhao ◽  
...  
Keyword(s):  
High Resolution ◽  
Edge Structure ◽  
X Ray ◽  
X Ray Scattering ◽  
X Ray Absorption ◽  
Ray Scattering
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