Syntheses and Crystal Structures of Cuprate Complexes of Europium and Ytterbium, {[(PhC⋮C)₃Cu][Eu(Py)(THF)₂]}₂ and {[(PhC⋮C)₃Cu][Yb(THF)₂]}₂

Abstract

The (Phenylethynyl)cuprate europium complex {[(PhC⋮C) 3 Cu][Eu(Py)(THF) 2 ]} 2 ( 1 ) was synthesized by reaction of Eu with PhC⋮CCu in pyridine. The cuprate ytterbium complex {[(PhC⋮C) 3 Cu][Yb(THF) 2 ]} 2 ( 2 ) was synthesized by reaction of Yb with PhC⋮CCu in THF in the presence of a catalytic amount of ytterbium diiodide and also by the reaction of (PhC⋮C) 2 Yb with PhC⋮CCu.