Structural and electronic consequences of protonation in (Mn/sub 4/O/sub 6/)/sup 4+/ cores: pH dependent properties of oxo-bridged manganese complexes

Journal Article · Wed Mar 01 04:00:00 EST 1989 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00187a070· OSTI ID:5885729

Hagen, K S; Westmoreland, T D; Scott, M J; Armstrong, W H

In the course of recent studies aimed at preparing polynuclear manganese complexes, the authors have discovered a synthetic route which affords the novel mixed oxo/hydroxo-bridged tetranuclear Mn(IV) complex, (Mn/sub 4/O/sub 5/(OH)(tame)/sub 4/)(CF/sub 3/SO/sub 3/)/sub 5/, 1(CF/sub 3/SO/sub 3/)/sub 5/. This compound contains a protonated form of the (Mn/sub 4/O/sub 6/)/sup 4+/ core, also found in (Mn/sub 4/O/sub 6/(tacn)/sub 4/)/sup 4+/. The adamantane-shaped (Mn/sub 4/O/sub 6/)/sup 4+/ core has been proposed as a reaction intermediate in photosynthetic water oxidation. As magnetic measurements have been used extensively to characterize the oxygen-evolving complex, structural and magnetic properties due to protonation of this tetranuclear core are of particular interest.

• Research Organization: Univ. of California, Berkeley (USA)
• OSTI ID: 5885729
• Journal Information: J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 111:5; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140505 -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400500 -- Photochemistry
CHEMICAL REACTIONS
COMPLEXES
DATA
ELECTRONIC STRUCTURE
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
HYDROGEN TRANSFER
INFORMATION
LIGANDS
MANGANESE COMPLEXES
NUMERICAL DATA
OXIDATION
OXYGEN COMPLEXES
OXYGEN COMPOUNDS
PH VALUE
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TRANSITION ELEMENT COMPLEXES
WATER