TY - JOUR
T1 - Labile electronic and spin states of the CaMn4O5 cluster in the PSII system refined to the 1.9 X-ray resolution. UB3LYP computational results
AU - Kanda, Keita
AU - Yamanaka, Shusuke
AU - Saito, Tohru
AU - Umena, Yasufumi
AU - Kawakami, Keisuke
AU - Shen, Jian Ren
AU - Kamiya, Nobuo
AU - Okumura, Mitsutaka
AU - Nakamura, Haruki
AU - Yamaguchi, Kizashi
PY - 2011/4/11
Y1 - 2011/4/11
N2 - UB3LYP calculations were first performed to elucidate electronic and spin structures of the CaMn4O5 cluster in the oxygen-evolving-complex of the PSII system refined to the 1.9 X-ray resolution by Kamiya, Shen, and their collaborators. Eight different UB3LYP solutions with axial spin structures were constructed to obtain the energy levels of the cluster on the basis of their X-ray structure. The energy diagrams were analyzed in terms of the Heisenberg model that involves six effective-exchange integrals between manganese ions. Several characteristic features of the electronic states of the cluster are revealed from these theoretical investigations based on the UB3LYP calculations.
AB - UB3LYP calculations were first performed to elucidate electronic and spin structures of the CaMn4O5 cluster in the oxygen-evolving-complex of the PSII system refined to the 1.9 X-ray resolution by Kamiya, Shen, and their collaborators. Eight different UB3LYP solutions with axial spin structures were constructed to obtain the energy levels of the cluster on the basis of their X-ray structure. The energy diagrams were analyzed in terms of the Heisenberg model that involves six effective-exchange integrals between manganese ions. Several characteristic features of the electronic states of the cluster are revealed from these theoretical investigations based on the UB3LYP calculations.
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U2 - 10.1016/j.cplett.2011.02.030
DO - 10.1016/j.cplett.2011.02.030
M3 - Article
AN - SCOPUS:79953213623
VL - 506
SP - 98
EP - 103
JO - Chemical Physics Letters
JF - Chemical Physics Letters
SN - 0009-2614
IS - 1-3
ER -