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Synfacts 2011(1): 0044-0044  
DOI: 10.1055/s-0030-1259148
Synthesis of Materials and Unnatural Products
© Georg Thieme Verlag Stuttgart ˙ New York

Double-Stranded Copper(II) meso-Helicates

Contributor(s): Timothy M. Swager, Shuang Liu
E. Pardo, J. Ferrando-Soria, M.-C. Dul, R. Lescouëzec, Y. Journaux*, R. Ruiz-García, J. Cano, M. Julve, F. Lloret*, L. Cañadillas-Delgado, J. Pasán, C. Ruiz-Pérez
Memorial University, St. John’s, Canada; UPMC Univ Paris 06, CNRS, UMR 7201, Paris, and Institut Laue Langevin, Grenoble, France; Universitat de València, Universidad de la Laguna and Universidad de Zaragoza, Spain
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Publication History

Publication Date:
21 December 2010 (online)

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Significance

Double-stranded oligonuclear copper(II) coordination complexes were prepared by self-assembly of copper(II) ions and oligo(2-methyl-1,3-phenyleneoxalamide) ligands. As a result of the ligand template effect, all the metal ions adopt a linear arrangement with the Cu˙˙˙Cu distances in the range of 7.20 to 7.40 Å. The copper(II) centers display alternating M or P helical chirality, resulting in achiral meso-helicates in the case of di- and ­tetranuclear complexes (2a and 2c) or a racemic mixture of M,P,M and P,M,P configurations for trinuclear 2b.