title: The interaction of 1,1'-diisocyanoferrocene with gold: formation of monolayers and supramolecular polymerization of an aurophilic ferrocenophane.
abstract: The coordination chemistry of 1,1'-diisocyanoferrocene (1) was investigated. Its reaction with Cr(CO)5(THF) (2 equiv) affords (1)[Cr(CO)5]2, which exhibits eclipsed cyclopentadienyl rings with a synclinal arrangement of the two substituents. 1 behaves like an aryl isocyanide in this compound according to IR spectroscopic data, and its oxidation leads to a marked decrease of net electron donor ability. The reaction of 1 with AuCl(SMe2) affords the insoluble coordination polymer [(1)(AuCl)2]infinity. The (1)(AuCl)2 molecules adopt a 3,4-diaura-[6]ferrocenophane structure. They are aggregated in a zipperlike fashion through aurophilic interactions, with Au-Au distances ranging from 3.34 to 3.48 A. The adsorption of 1 from acetonitrile solution on polycrystalline gold affords a self-assembled monolayer. Both isocyanide groups are binding to the surface.
authors.affiliation: Department of Science and Center for Interdisciplinary Nanostructure Science and Technology, University of Kassel, D-34109 Kassel, Germany. siemeling@uni-kassel.de
authors.forename: Ulrich
authors.initials: U
authors.lastname: Siemeling
authors.forename: Dag
authors.initials: D
authors.lastname: Rother
authors.forename: Clemens
authors.initials: C
authors.lastname: Bruhn
authors.forename: Heinrich
authors.initials: H
authors.lastname: Fink
authors.forename: Tobias
authors.initials: T
authors.lastname: Weidner
authors.forename: Frank
authors.initials: F
authors.lastname: Träger
authors.forename: Alexander
authors.initials: A
authors.lastname: Rothenberger
authors.forename: Dieter
authors.initials: D
authors.lastname: Fenske
authors.forename: Andreas
authors.initials: A
authors.lastname: Priebe
authors.forename: Jörg
authors.initials: J
authors.lastname: Maurer
authors.forename: Rainer
authors.initials: R
authors.lastname: Winter