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Integer‐Spin Multifrequency EPR Spectroscopy of a Ferromagnetically Coupled, Oxo‐Bridged Mn IV Mn IV Model Complex
Author(s) -
DubocToia Carole,
Hummel Helga,
Bill Eckhard,
Barra AnneLaure,
Chouteau Gérard,
Wieghardt Karl
Publication year - 2000
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 - 10.1002/1521-3773(20000818)39:16<2888::aid-anie2888>3.0.co;2-n
Subject(s) - electron paramagnetic resonance , integer (computer science) , spin (aerodynamics) , spectroscopy , physics , condensed matter physics , nuclear magnetic resonance , chemistry , quantum mechanics , computer science , thermodynamics , programming language
Even systems with integer spins such as [L 2 Mn 2 IV ( μ ‐O)( μ ‐phBO 2 ) 2 ](PF 6 ) 2 ( 1 , S =3; L=1,4,7‐trimethyl‐1,4,7‐triazacyclononane, phBO 2 =phenyl boronic acid)—a model for the high oxidation states in several manganese‐containing metalloproteins—can be studied in detail by high‐field and high‐frequency EPR spectroscopy (see picture, spectra recorded at 285 GHz). In association with low‐frequency EPR and magnetization measurements, a complete analysis of the magnetic properties of 1 was obtained.