Related Experiment Video
Updated: Mar 18, 2026

11:10
Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
12.6K
Vanadium K-edge XANES in vanadium-bearing model compounds: a full multiple scattering study
Federico Benzi1, Gabriele Giuli1, Stefano Della Longa2
1School of Science and Technology, University of Camerino, Via Gentile III da Varano, 62032 Camerino, Italy.
Journal of Synchrotron Radiation
|July 1, 2016
Summary
This study uses X-ray absorption spectroscopy calculations to analyze vanadium compounds. Findings correlate spectral features with vanadium
Area of Science:
- Materials Science
- Solid State Physics
- Computational Chemistry
Background:
- Vanadium compounds exhibit diverse coordination geometries and oxidation states.
- Understanding these properties is crucial for various applications.
- X-ray absorption near-edge spectroscopy (XANES) is a powerful tool for probing electronic structure.
Purpose of the Study:
- To systematically study vanadium-bearing model compounds using advanced computational methods.
- To establish correlations between XANES spectral features and V coordination/oxidation states.
- To develop a predictive approach for analyzing unknown vanadium compounds.
Main Methods:
- Vanadium K-edge X-ray absorption near-edge spectroscopy (XANES) calculations.
- Full multiple scattering (FMS) theoretical framework.
- Analysis and calibration of theoretical parameters using the MXAN program.
Main Results:
- Established a correlation between fitting parameters and vanadium coordination geometry.
- Demonstrated a relationship between fitting parameters and vanadium oxidation state.
- Validated the use of FMS calculations for analyzing experimental XANES spectra.
Conclusions:
- Computational XANES analysis provides valuable insights into vanadium compound structures.
- The established correlations enable preliminary characterization of unknown vanadium materials.
- This approach enhances the study of vanadium-bearing compounds through predictive analysis.
Related Concept Videos
Valence Bond Theory
11.5K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
11.5K
Valence Bond Theory
51.2K
Overview of Valence Bond Theory
51.2K
Van der Waals Interactions
73.0K
Atoms and molecules interact with each other through intermolecular forces. These electrostatic forces arise from attractive or repulsive interactions between particles with permanent, partial, or temporary charges. The intermolecular forces between neutral atoms and molecules are ion–dipole, dipole–dipole, and dispersion forces, collectively known as van der Waals forces.
73.0K
Van der Waals Equation
6.8K
The ideal gas law is an approximation that works well at high temperatures and low pressures. The van der Waals equation of state (named after the Dutch physicist Johannes van der Waals, 1837−1923) improves it by considering two factors.
First, the attractive forces between molecules, which are stronger at higher densities and reduce the pressure, are considered by adding to the pressure a term equal to the square of the molar density multiplied by a positive coefficient a. Second, the volume...
First, the attractive forces between molecules, which are stronger at higher densities and reduce the pressure, are considered by adding to the pressure a term equal to the square of the molar density multiplied by a positive coefficient a. Second, the volume...
6.8K
Bonding in Metals
55.6K
Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”.
55.6K
Crystal Field Theory - Tetrahedral and Square Planar Complexes
49.5K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
49.5K

