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A Bulky m ‐Terphenyl Cyclopentadienyl Ligand and Its Alkali‐Metal Complexes
Author(s) -
Veinot Alex J.,
Todd Angela D. K.,
Masuda Jason D.
Publication year - 2017
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201706398
Subject(s) - cyclopentadiene , cyclopentadienyl complex , chemistry , terphenyl , ligand (biochemistry) , alkali metal , iodide , lithium (medication) , cobalt , metal , inorganic chemistry , medicinal chemistry , methyl iodide , organic chemistry , catalysis , medicine , biochemistry , receptor , endocrinology
The synthesis of the new m ‐terphenyl‐substituted cyclopentadienyl ligand precursor 1‐cyclopentadiene‐2,6‐bis(2,4,6‐trimethylphenyl)benzene (Ter Mes CpH) is described. The synthesis proceeds through the reaction of Ter Mes Li with cobaltocenium iodide, followed by oxidation of the intermediate cobalt(I) species to give the corresponding cyclopentadiene as a mixture of isomers. The preparation and spectroscopic properties of the alkali‐metal salts (Li–Cs) is described, as well as structural information obtained by X‐ray diffraction studies for the lithium, potassium, and cesium analogues. Crystallographic data demonstrate the ability of these new ligands to act as monoanionic chelates by forming metal complexes with Cp–M–Ar bonding environments.