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Ligand Effects in Low‐Valent Co(I) Clathrochelate Complexes
Author(s) -
Planes Ophélie Marie,
Scopelliti Rosario,
FadaeiTirani Farzaneh,
Severin Kay
Publication year - 2021
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.202100044
Subject(s) - chemistry , redox , cobalt , ligand (biochemistry) , solid state , oxidation state , stereochemistry , catalysis , inorganic chemistry , organic chemistry , receptor , biochemistry
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.