Classification of macrocyclic compounds

Mononucleating macrocyclic ligands capable of forming complexes with only 

2 Flexible, capable of forming six-coordinate species approximating to both octahedral and trigonal prismatic coordination geometries 

3 Other three-dimensional systems, for example, pseudorotaxanes, rotaxanes etc. 

Bi- and polynucleating macrocycles, which are capable of coordinating to two or more ions within the macrocyclic system 

2 With two non-equivalent ring cavities (differing at least by the set of donors) 

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Classification of macrocyclic compounds containing tetrathiafulvalene moieties, synthetic methods, the latest advances in research on electrochemical properties and applications to molecular recognition and development trends in research on such macrocyclic compounds were outlined and reviewed <2007MI1220>. 

The nature of the donor atoms is one of the most important characteristics of macrocyclic ligands [11] and has been employed as a criterion for a classification of macrocyclic compounds. The classification of the macropolycyclic encapsulating ligands is based on the nature of the donor atoms and the type of donor groups that appear to be the best. 

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