Oligonuclear cyanide complexes from silver containing building blocks
摘要:
The complexes LnM-CN-Ag-CN with LnM=Cp(dppe)Fe or Cp(PPh3)(2)Ru are available from [Ag(CN)(2)](-) and [LnM](+) or LnM-CN. They are precursors of [LnM-CN-Ag-NC-MLn](+). Likewise the trinuclear complexes [LnM'-CN-Ag-NC-M'L-n](+) with LnM'=(TPA)Cu and cis-(bpy)(2)FeCN 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. (C) 2000 Elsevier Science B.V. All rights reserved.