Crystal structure of paddle-wheel sandwich-type [Cu2{(CH3)2CO}{μ-Fe(η5-C5H4C[triple-bond]N)2}3](BF4)2·(CH3)2CO

Abstract

The molecular structure of (acetone-κO)tris(μ-ferrocene-1,1′-dicarbonitrile-κ2N:N′)dicopper(I) bis(tetrafluoridoborate) acetone monosolvate, [Cu2Fe3(C6H4N)6(C3H6O)](BF4)2·C3H6O, consists of two CuIions bridged by a ferrocene-1,1′-dicarbonitrile moiety in a paddle-wheel-architectured sandwich complex with two BF4−units as counter-ions. One of the latter is equally disordered over two sets of sites. The two CuIions are complexed in a trigonal–planar manner by three nitrileN-donor atoms. Further interactions by the O atom of an acetone molecule to one of the CuIatoms and a weak η2,π-interaction of two atoms of a cyclopentadienyl ring to the other CuIatom complete a distorted trigonal–pyramidal environment for each of the metal ions. A further acetone molecule is also present as a solvent molecule. The crystal packing is consolidated by several π–π interactions.