Eu(FOD) 3 induced shifts of alkyl substituted adamantanones and molecular geometries of the adducts

Abstract

The geometries of adducts of europium tris(fod) and a series of alkyl substituted adamantanones have been determined with the use of lanthanide induced 1H shift measurements. The position of the Eu(III) cation relative to the substrate ligand appears to be strongly dependent upon steric interactions between the fod ligands and the alkyl groups in the substrate. The alkyl substitution causes distortions from the otherwise linear C-O-Eu array. In general the Eu(III) cation moves away from the alkyl substituents.