Crystal structure of paddle-wheel sandwich-type [Cu2{(CH3)2CO}{l-Fe(g5-C5H4C≡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 CuI ions 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 CuI ions are complexed in a trigonal-planar manner by three nitrile N-donor atoms. Further interactions by the O atom of an acetone molecule to one of the CuI atoms and a weak η2,π-interaction of two atoms of a cyclopentadienyl ring to the other CuI atom 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.