The Interaction of 1,1'-Diisocyanoferrocene with Gold: Formation of Monolayers and Supramolecular Polymerization of an Aurophilic Ferrocenophane

Ulrich Siemeling, Dag Rother, Clemens Bruhn, Heinrich Fink, Tobias Weidner, Frank Träger, Alexander Rothenberger, Dieter Fenske, Andreas Priebe, Jörg Maurer, Rainer Winter

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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.

OriginalsprogEngelsk
TidsskriftJournal of the American Chemical Society
Vol/bind127
Nummer4
Sider (fra-til)1102-3
Antal sider2
ISSN0002-7863
DOI
StatusUdgivet - 2005
Udgivet eksterntJa

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