Hidekazu Ikeno et al 2009 J. Phys.: Conf. Ser. 190 012005 doi:10.1088/1742-6596/190/1/012005
Ab-initio CI calculations for 3d transition metal L2,3 X-ray absorption spectra of TiCl4 and VOCl3
Hidekazu Ikeno1, Frank M F de Groot1 and Isao Tanaka2,3
Show affiliationsX-ray-absorption near-edge structures (XANES) at the transition metal (TM) L2,3-edge of TiCl4 and VOCl3 are calculated by the all-electron configuration interaction (CI) method using fully-relativistic molecular spinors with density functional theory (DFT). The electronic excitation from molecular spinors mainly composed of ligand p atomic spinors to those of TM-3d spinors, i.e., the charge transfer, is included by taking additional electronic configurations in the CI. The effects of the ligand field and the charge transfer on the TM-L2,3 XANES are investigated by an ab-intio method. The reduction of inter-electron interaction due to the covalent bonding between TM and ligand atoms has been found. The contribution of charge transferred configuration is small at the initial state of TM-L2,3 XANES while the significant amount of charge transferred configuration is found at the final states. The spectral shapes of TM-L2,3 XANES of both TiCl4 and VOCl3 are strongly modified by the charge transfer effects.
- PACS
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31.15.V- Electron correlation calculations for atoms, ions and molecules
31.15.E- Density-functional theory
33.15.Fm Bond strengths, dissociation energies
31.30.J- Relativistic and quantum electrodynamic (QED) effects in atoms, molecules, and ions
- Subjects
- Dates
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Issue 1 (2009)
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Ab-initio CI calculations for 3d transition metal L2,3 X-ray absorption spectra of TiCl4 and VOCl3
Hidekazu Ikeno et al 2009 J. Phys.: Conf. Ser. 190 012005
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