State of manganese in the photosynthetic apparatus. 1. Extended x-ray absorption fine structure studies on chloroplasts and di-.mu.-oxo-bridged dimanganese model compounds

Journal Article · Tue Sep 01 00:00:00 EDT 1981 · Journal of the American Chemical Society

DOI:https://doi.org/10.1021/ja00408a042· OSTI ID:1109117

Kirby, J. A. ^[1]; Robertson, A. S. ^[1]; Smith, J. P. ^[1]; Thompson, A. C. ^[1]; Cooper, S. R. ^[1]; Klein, M. P. ^[1]

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1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Lab. of Chemical Biodynamics

In this paper, extended X-ray absorption fine structure studies on the manganese contained in spinach chloroplasts and on certain di-p-oxo-bridged manganese dimers of the form (X₂Mn)O₂(MnX₂) (X = 2,2'-bipyridine and 1 ,10-phenanthroline) are reported. From these studies, the manganese associated with photosynthetic oxygen evolution is suggested to occur as a bridged transition-metal dimer with most likely another manganese. Finally, extensive details on the analysis are included.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Biological and Environmental Research (BER); National Science Foundation (NSF); John Simon Guggenheim Foundation (United States)
• DOE Contract Number: W-7405-ENG-48; PCM78-12121; DMR-07692-A02
• OSTI ID: 1109117
• Report Number(s): LBL-11873
• Journal Information: Journal of the American Chemical Society, Vol. 103, Issue 18; ISSN 0002-7863
• Publisher: American Chemical Society (ACS)
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
Manganese
photosynthesis
EXAFS
Synchrotron radiation
oxygen evolution