New Macrocyclic Ligands. XIV. Synthesis and X-Ray Structures of Potentially Pentadentate Ligands Incorporating Non-Symmetrically Arranged N4S-, N3OS-, N2O2S- and N2S2O-Heteroatoms

doi:10.1071/CH02121

New Macrocyclic Ligands. XIV. Synthesis and X-Ray Structures of Potentially Pentadentate Ligands Incorporating Non-Symmetrically Arranged N₄S-, N₃OS-, N₂O₂S- and N₂S₂O-Heteroatoms

D. S. Baldwin, B. F. Bowden, P. A. Duckworth, L. F. Lindoy, B. J. McCool, G. V. Meehan, I. M. Vasilescu and S. B. Wild

Australian Journal of Chemistry 55(9) 597 - 603

Abstract

The synthesis and characterization of new mixed-donor macrocyclic ligands incorporating nitrogen, sulfur and/or oxygen heteroatoms are described. The new 17- or 18-membered macrocyclic rings contain unsymmetrical arrangements of their heteroatoms in contrast to related, previously reported rings in which the donor sets are arranged symmetrically. The X-ray structures of the 17-membered rings incorporating N₄O- and N₄S-donor sets are presented.