title: Oligoethylene chains terminated by ferrocenyl end groups: synthesis, structural properties, and two-dimensional self-assembly on surfaces.
abstract: A series of unsaturated long-chain-bridged diferrocenes Fc-(CH2)n-CH=CH-(CH2)n-Fc (4 a-e) was synthesized by means of olefin metathesis. Subsequent catalytic hydrogenation furnished the saturated alpha,omega-bis-ferrrocenyl oligoethylene products Fc-(CH2)m-Fc (5). Members of both series formed highly ordered laminar structures at the highly oriented pyrolytic graphite (HOPG) solid/liquid interface or on the Ag(110) surface, which were characterized by STM. Details of the structural features of these ordered physisorbed surface assemblies of 4 and 5 were analyzed by comparison with DFT calculations on model systems and with the characteristic packing modes of these systems in the crystal.
authors.affiliation: Organisch-Chemisches Institut der Universität Münster, Corrensstrasse 40, 48149 Münster, Germany.
authors.forename: Katrin
authors.initials: K
authors.lastname: Wedeking
authors.forename: Zhongcheng
authors.initials: Z
authors.lastname: Mu
authors.forename: Gerald
authors.initials: G
authors.lastname: Kehr
authors.forename: Jesus Cano
authors.initials: JC
authors.lastname: Sierra
authors.forename: Christian Mück
authors.initials: CM
authors.lastname: Lichtenfeld
authors.forename: Stefan
authors.initials: S
authors.lastname: Grimme
authors.forename: Gerhard
authors.initials: G
authors.lastname: Erker
authors.forename: Roland
authors.initials: R
authors.lastname: Fröhlich
authors.forename: Lifeng
authors.initials: L
authors.lastname: Chi
authors.forename: Wenchong
authors.initials: W
authors.lastname: Wang
authors.forename: Dingyong
authors.initials: D
authors.lastname: Zhong
authors.forename: Harald
authors.initials: H
authors.lastname: Fuchs