17  Macrocyclic coordination chemistry

Abstract

Highlights include the design of a dicopper(II) cryptate that can be used for the fluorescent detection of dicarboxylate anions in aqueous solution, the translocation of copper(II) centres within a macrocycle to detect imidazolebased moieties, and the design of a cyclohexyl-1,2-diamine derived bis(binaphthyl) macrocycle that demonstrates enantioselectivity in the fluorescent recognition of mandelic acid. The activation of acetonitrile solvent by a dinuclear Cu(II) cryptate is interesting. The undoubted highlight of the year, however, is the realization of a Borromean link from 18 components in a metal-templated assembly.

Can Serendipity Still Hold Any Surprises in the Coordination Chemistry of Mixed-Donor Macrocyclic ligands? The Case Study of Pyridine-Containing 12-Membered Macrocycles and Platinum Group Metal ions PdII, PtII, and RhIII

“…However, the basic aspects of coordination chemistry of macrocyclic ligands towards different substrates, particularly metal ions, continue to be a fascinating area of research in the quest for systems capable of forcing the metal center to adopt unusual coordination geometries and/or oxidation states within stable complexes. For this purpose, the hard-soft nature of donor atoms and their spatial disposition, the cavity size, and flexibility of macrocyclic ligands are the most important parameters that define the coordination properties of these systems in relation to the stereo-electronic requirements of the metal ions of interest [ 11 , 12 ].…”

Template Synthesis (Self-Assembly) of Macrocycles: Theory and Practice

“…In the truly vast literature devoted to the template synthesis of metal macroheterocyclic compounds, a number of specific terms and expressions are used, the most important of which are the following [ 6 , 7 , 8 , 9 , 10 , 11 ]:…”