New Macrocyclic Ligands. VI. 20- to 22-Membered Dibenzo-Substituted Rings Incorporating Mixed Nitrogen, Oxygen and/or Sulfur Donor Atoms

Abstract

The syntheses and characterization of 10 dibenzo-substituted macrocycles incorporating mixed nitrogen, oxygen and/or sulfur donor sets are reported. The new systems, which incorporate six potential donor sites, extend the range of related (potentially tetradentate and pentadentate) macrocyclic systems reported previously.