Oxidative coupling of phenylacetylene by a di-copper(II) complex of a macrocyclic ligand and the X-ray structure of a tetra-copper(I) phenylacetylide complex
Abstract
Reaction of phenylacetylene with a di-µ-hydroxo-di-copper(II) complex of a macrocyclic ligand affords diphenyldiacetylene together with a tetranuclear copper(I) complex containing a Cu4-phenylacetylide core in which the terminal carbon atom is five-co-ordinate.