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Direct Detection of Oxygen Ligation to the Mn 4 Ca Cluster of Photosystem II by X‐ray Emission Spectroscopy
Author(s) -
Pushkar Yulia,
Long Xi,
Glatzel Pieter,
Brudvig Gary W.,
Dismukes G. Charles,
Collins Terrence J.,
Yachandra Vittal K.,
Yano Junko,
Bergmann Uwe
Publication year - 2010
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200905366
Subject(s) - photosystem ii , cluster (spacecraft) , chemistry , spectroscopy , oxygen evolving complex , crystallography , metal , oxygen , emission spectrum , photosynthesis , manganese , water splitting , spectral line , analytical chemistry (journal) , physics , photocatalysis , catalysis , biochemistry , organic chemistry , quantum mechanics , astronomy , computer science , programming language , chromatography
Seeing O : Mn Kβ 2,5 and Kβ′′ X‐ray emission spectra arise from transitions from the ligand 2s and 2p shells of the metal complexes to the metal 1s levels. In biological systems, it is difficult to specifically probe the O and N ligands. This spectroscopic technique is used to study the O ligands of the Mn 4 Ca cluster that catalyzes photosynthetic water splitting and allows direct detection for the first time of the bridging oxo groups of Mn.