X-Ray crystallographic and 1H NMR spectroscopic studies show that, in the presence of copper(I), an oligopyridyl pyrazine derivative spontaneously forms a single chiral, cyclophane-like dimeric complex and that this is the sole species present in solution and the solid state.
T. Bark, F. Heirtzler, T. Weyhermüller and F. Heirtzler, Chem. Commun., 1998, 1475 DOI: 10.1039/A802709I
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