Detection of EPR spectra in S = 2 states of trivalent manganese complexes

Journal Article · Wed Nov 22 04:00:00 EST 1989 · Journal of the American Chemical Society; (USA)

DOI:https://doi.org/10.1021/ja00206a028· OSTI ID:7197769

Dexheimer, S L; Gohdes, J W; Chan, M K; Hagen, K S; Armstrong, W H; Klein, M P ^[1]

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1. Lawrence Berkeley Lab., CA (USA)

The presence of trivalent manganese is implicated in a number of redox-active metalloenzymes, including the photosynthetic oxygen-evolving complex, superoxide dismutase, pseudocatalase, and ribonucleotide reductase. Considerable effort has been focused on the synthesis and characterization of inorganic complexes as structural models for these biological metal centers. In this communication data is presented of X-band EPR spectra of S = 2 spin states of 3 trivalent manganese complexes, including the mononuclear manganese (III) tris(acetylacetonate) and tris-(picolinate) coordination complexes and the weakly antiferromagnetically exchange coupled binuclear complex Mn{sub 2} {sup III,III}O(O{sub 2}CCH{sub 3}){sub 2}(HB(pz){sub 3}){sub 2} (HB(pz){sub 3} = hydrotris(1-pyrazolyl)borate).

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 7197769
• Journal Information: Journal of the American Chemical Society; (USA), Journal Name: Journal of the American Chemical Society; (USA) Vol. 111:24; ISSN 0002-7863; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400500 -- Photochemistry
CHEMICAL REACTIONS
COMPLEXES
DATA
DATA ANALYSIS
ELECTRON SPECTRA
EXPERIMENTAL DATA
INFORMATION
MANGANESE COMPLEXES
MEASURING INSTRUMENTS
MEASURING METHODS
METALLOPROTEINS
NUMERICAL DATA
ORGANIC COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PROTEINS
REDOX REACTIONS
SPECTRA
SYNTHESIS
TRANSITION ELEMENT COMPLEXES