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Keywords:

  • Macrocycles;
  • Supramolecular chemistry;
  • Magnesium;
  • Alkaline earth metals;
  • Self-assembly

Abstract

Deprotonation of 2,3-pyrazyl-linked bis(thiophosphorano)methane {CH2(iPr2P=S)}2(C4H2N2-2,3) (2) with one equivalent of nBu2Mg in THF afforded a 20-membered macrocyclic magnesium complex [Mg{CH(iPr2P–S)}2(C4H2N2-2,3)]4 (4a). The structure of 4a has been characterized by X-ray crystallography and NMR spectroscopy.