The effect of Mn oxidation state on metal core electron excitations in manganese dimers: a time-dependent density functional investigation

Literature Information

Publication Date 2009-04-30
DOI 10.1039/B900694J
Impact Factor 3.676
Authors

Adrian R. Jaszewski, Rob Stranger, Ronald J. Pace


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Abstract

Time-dependent density functional theory (TDDFT) calculations have been performed on a series of manganese dimers with averaged metal oxidation states of 2.0, 2.5, 3.0, 3.5 and 4.0. The excitation energies and oscillator strengths of transitions within the Mn K-core edges have been determined. The theoretical edge energies reproduce the experimental correlation between the relative position of the Mn K-edge and the averaged Mn oxidation state extremely well. A comparison with the results obtained previously for Mn complexes with different ligand environments shows that TDDFT can be successfully applied to determine the relative edge energy differences between Mn systems, taking into account the various oxidation states of the metal and differences in ligand environment in a self-consistent manner. The accuracy of the calculated edge energies indicates that the methodology employed in the current study can be used to determine the oxidation states of Mn atoms in the Mn4Ca cluster of photosystem II (PSII).

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Source Journal

Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
CiteScore: 5.5
Self-citation Rate: 10.3%
Articles per Year: 3036

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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