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  4. Ligand Effects in Low-Valent Co(I) Clathrochelate Complexes
 
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Ligand Effects in Low-Valent Co(I) Clathrochelate Complexes

Planes, Ophelie Marie  
•
Scopelliti, Rosario  
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Fadaei-Tirani, Farzaneh  
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March 25, 2021
Zeitschrift Fur Anorganische Und Allgemeine Chemie

Clathrochelate complexes of cobalt are known in the oxidation states I, II, and III. Low-valent Co(I) complexes are highly reactive compounds, and there is only limited knowledge about their structures in the solid state. Herein, we describe the crystallographic analyses of three low-valent clathrochelate complexes, along with analyses of the corresponding Co(II) precursors. Two different ligand environments were studied: a) ligands with alkyl substituents, which render the complexes highly reducing, and b) potentially redox non-innocent ligands. Our analyses show that the ligands have a large effect on the redox potentials, but only a small effect on the geometry and the electronic state of the central Co ion.

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