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Oligomeric ferrocene rings

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Title: Oligomeric ferrocene rings
Authors: Inkpen, MS
Scheerer, S
Linseis, M
White, AJP
Winter, RF
Albrecht, T
Long, NJ
Item Type: Journal Article
Abstract: Cyclic oligomers comprising strongly interacting redox-active monomer units represent an unknown, yet highly desirable class of nanoscale materials. Here we describe the synthesis and properties of the first family of molecules belonging to this compound category—differently sized rings comprising only 1,1′-disubstituted ferrocene units (cyclo[n], n = 5–7, 9). Due to the close proximity and connectivity of centres (covalent Cp–Cp linkages; Cp = cyclopentadienyl) solution voltammograms exhibit well-resolved, separated 1e– waves. Theoretical interrogations into correlations based on ring size and charge state are facilitated using values of the equilibrium potentials of these transitions, as well as their relative spacing. As the interaction free energies between the redox centres scale linearly with overall ring charge and in conjunction with fast intramolecular electron transfer (∼107 s−1), these molecules can be considered as uniformly charged nanorings (diameter ∼1–2 nm).
Issue Date: 27-Jun-2016
Date of Acceptance: 19-May-2016
URI: http://hdl.handle.net/10044/1/37075
DOI: 10.1038/nchem.2553
ISSN: 1755-4330
Publisher: Nature Publishing Group
Start Page: 825
End Page: 830
Journal / Book Title: Nature Chemistry
Volume: 8
Copyright Statement: © 2016 Macmillan Publishers Limited. All rights reserved.
Sponsor/Funder: The Leverhulme Trust
Funder's Grant Number: RPG-2012-754
Keywords: Science & Technology
Physical Sciences
Chemistry, Multidisciplinary
Chemistry
MIXED ULLMANN REACTIONS
1,1-OLIGOMERIC FERROCENES
RUTHENOCENE
BIS(FULVALENE)DIIRON
OLIGOMETALLOCENES
PURIFICATION
DERIVATIVES
BIFERROCENE
MONOCATION
SOLVENT
Organic Chemistry
03 Chemical Sciences
Publication Status: Published
Online Publication Date: 2016-06-27
Appears in Collections:Chemistry
Catalysis and Advanced Materials
Chemical Engineering
Faculty of Natural Sciences
Faculty of Engineering