Oligonuclear cyanide complexes from silver containing building blocks

Abstract

The complexes L n MCNAgCN with L n MCp(dppe)Fe or Cp(PPh 3) 2Ru are available from [Ag(CN) 2] − and [L n M] + or L n MCN. They are precursors of [L n MCNAgNCML n ] +. Likewise the trinuclear complexes [L n M′CNAgNCM′L n ] + with L n M′(TPA)Cu and cis-(bpy) 2FeCN have been prepared. Irrespective of the CN attachment in the starting materials the cyanide-bridged compounds always contain MCNAg arrays, i.e. silver–isocyanide coordination, thereby proving the lability of the silver–cyanide linkage. Electrochemical measurements have shown that there is no electronic communication between the outer metal centers in the trinuclear complexes.