title: The first example of a two-coordinated Au(I) atom bonded to an Fe(II) atom and an N-heterocyclic carbene (NHC) ligand.
abstract: The aurophilicity exhibited by Au(I) complexes depends strongly on the nature of the supporting ligands present and the length of the Au-element (Au-E) bond may be used as a measure of the donor-acceptor properties of the coordinated ligands. A binuclear iron-gold complex, [1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene-2κC(2)]dicarbonyl-1κ(2)C-(1η(5)-cyclopentadienyl)gold(I)iron(II)(Au-Fe) benzene trisolvate, [AuFe(C5H5)(C27H36N2)(CO)2]·3C6H6, was prepared by reaction of K[CpFe(CO)2] (Cp is cyclopentadienyl) with (NHC)AuCl [NHC = 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene]. In addition to the binuclear complex, the asymmetric unit contains three benzene solvent molecules. This is the first example of a two-coordinated Au atom bonded to an Fe and a C atom of an N-heterocyclic carbene.
authors.affiliation: Institut für Anorganische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, 60438 Frankfurt/Main, Germany.
authors.forename: Alexander
authors.initials: A
authors.lastname: Bechtoldt
authors.affiliation: Institut für Anorganische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, 60438 Frankfurt/Main, Germany.
authors.forename: Hans-Wolfram
authors.initials: HW
authors.lastname: Lerner
authors.affiliation: Institut für Anorganische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, 60438 Frankfurt/Main, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Bolte
keywords: 1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene; C—H...π interaction; NHC ligand; aurophilicity; binuclear iron–gold complex; crystal structure; two-coordinated gold(I)