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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 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/anie.201706398
Subject(s) - cyclopentadiene , cyclopentadienyl complex , terphenyl , chemistry , ligand (biochemistry) , alkali metal , lithium (medication) , cobalt , iodide , metal , methyl iodide , medicinal chemistry , inorganic chemistry , 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.

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