Valence-Delocalized and Valence-Trapped FeIIFeIII Complexes: Drastic Influence of the Ligands

6533b829fe1ef96bd128969d

RESEARCH PRODUCT

Valence-Delocalized and Valence-Trapped FeIIFeIII Complexes: Drastic Influence of the Ligands

Wolfgang Haase Ulrich Flörke Jürgen Ensling Philipp Gütlich Rüdiger Werner Kamalaksha Nag Sujit K. Dutta

subject

Crystallography Delocalized electron Valence (chemistry)Chemistry Mössbauer spectroscopy General Medicine General Chemistry Electrochemistry Catalysis Spectral line

description

The two macrocyclic ligands H 2 L 1 and H 2 L 2 are not very different, but their Fe II Fe III complexes are remarkably so. [L 1 Fe 2 (μ-OAc) 2 ](ClO 4 ) is valence-delocalized on the Mossbauer time scale over the range 1.8-364 K, whereas [L 2 Fe 2 (μ-OAc)(OAc)(H 2 O)](ClO 4 )·2H 2 O is valence-trapped even at room temperature. The difference in properties of these complexes is also reflected in their electronic spectra, in their electrochemical and magnetic behavior, and in their structures.

year	journal	country	edition	language
1997-02-03	Angewandte Chemie International Edition in English

https://doi.org/10.1002/anie.199701521

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