Helicate extension as a route to molecular wires

David Schultz, Frédéric Biaso, Abdul Rehaman Moughal Shahi, Michel Geoffroy, Kari Rissanen, Laura Gagliardi, Christopher J. Cramer, Jonathan R. Nitschke

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34 Scopus citations


We describe the preparation of a helicate containing four closely spaced, linearly arrayed copper(I) ions. This product may be prepared either directly by mixing copper(I) with a set of precursor amine and aldehyde subcomponents, or indirectly through the dimerization of a dicopper(I) helicate upon addition of 1,2-phenylenediamine. A notable feature of this helicate is that its length is not limited by the lengths of its precursor subcomponents: each of the two ligands wrapped around the four copper(I) centers contains one diamine, two dialdehyde, and two monoamine residues. This work thus paves the way for the preparation of longer oligo- and polymeric structures. DFT calculations and electrochemical measurements indicate a high degree of electronic derealization among the metal ions forming the cores of the structures described herein, which may therefore be described as "molecular wires".

Original languageEnglish (US)
Pages (from-to)7180-7185
Number of pages6
JournalChemistry - A European Journal
Issue number24
StatePublished - Aug 18 2008

Bibliographical note

Copyright 2008 Elsevier B.V., All rights reserved.


  • Conducting materials
  • Coordination chemistry
  • Dynamic covalent chemistry
  • Self-assembly


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