Details

Autor(en) / Beteiligte

• Veinot, Alex J.
• Todd, Angela D. K.
• Masuda, Jason D.

Titel

A Bulky m‐Terphenyl Cyclopentadienyl Ligand and Its Alkali‐Metal Complexes

Ist Teil von

• Angewandte Chemie International Edition, 2017-09, Vol.56 (38), p.11615-11619

Auflage

International ed. in English

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The synthesis of the new m‐terphenyl‐substituted cyclopentadienyl ligand precursor 1‐cyclopentadiene‐2,6‐bis(2,4,6‐trimethylphenyl)benzene (TerMesCpH) is described. The synthesis proceeds through the reaction of TerMesLi 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. Slick LiKCs: A bulky m‐terphenyl ligand has been combined with the ubiquitous cyclopentadienyl ligand to form a unique ligand that is capable of chelation to a metal through the cyclopentadienyl and o‐aryl fragments. Alkali‐metal complexes of this ligand formed linear (Li) and cyclic (K) tetramers and a cyclic hexamer (Cs) in the solid state.