Copper(I) and copper(II) complexes of an ethylene cross-bridged cyclam

The preparation and crystal structures of (4,11-di­benzyl-1,4,8,11-tetra­aza­bi­cyclo­[6.6.2]­hexa­decane-κ⁴N)copper(I) hexa-fluorophosphate, [Cu(C₂₆H₃₈N₄)]PF₆, and acetonitrile(4,11-dibenzyl-1,4,8,11-tetraazabicyclo[6.6.2]hexadecane-κ⁴N)-copper(II) bis(hexafluorophosphate), [Cu(C₂H₃N)(C₂₆H₃₈-N₄)](PF₆)₂, are described. The Cu^I ion is tetracoordinated in a very distorted tetrahedron, while the Cu^II analogue is pentacoordinated in a square pyramid.