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Spin-exchange interactions in the S2-state manganese tetramer in photosynthetic oxygen-evolving complex deduced from g=2 multiline EPR signal by Koji Hasegawa; Taka-aki Ono; Yorinao Inoue; Masami Kusunoki is a Physics and Astronomy article available to read on EtoBox.

What is Spin-exchange interactions in the S2-state manganese tetramer in photosynthetic oxygen-evolving complex deduced from g=2 multiline EPR signal about?

Possible spin-exchange structures of the Mn III,IV,IV,IV cluster in an S state of plant photosystem II were 2 computer-searched, within the range compatible with X-ray absorption data, by diagonalizing each Heisenberg spin-exchange Hamiltonian and then by checking whether it can take the S s 1r2 ground state capable of explaining the effective 55 Mn hyperfine constants determined from oriented multiline spectra and the first excited state with excitation energy around 20-50 cm y1 , or not. The possible spin-exchange structures were found to be distributed in those that contain only one Ž . strong-antiferromagnetic coupling and at most two intermediate coupling s . The most probable structures are discussed in detail.

Who reads Spin-exchange interactions in the S2-state manganese tetramer in photosynthetic oxygen-evolving complex deduced from g=2 multiline EPR signal?

Author

Koji Hasegawa; Taka-aki Ono; Yorinao Inoue; Masami Kusunoki

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0009-2614)

Published

1999

Language

EN

Field

Physics and Astronomy (Physical Sciences)