Metal-ligand coordinative interaction

It should be noted that the hypovalent Lewis acid-base interactions of the present section are in principle closely related to the general metal-ligand coordination interactions discussed in Section 4.5. However, in normal-valent transition-metal... 

In order to answer some of these outstanding questions, this chapter presents and analyzes a variety of chiral architectures based on metal-ligand coordinative interactions. Although there are a number of ways in which chirality can be introduced into coordination assemblies [2], we will concentrate on ensembles formed from achiral components, where chirality arises from metal coordination geometries or asymmetric ligand arrangements. Particular focus lies with assemblies that show host-guest encapsulation potential and maintain their chirality in solution. 

Molecular systems formed from metal-ligand coordinative interactions are generally kinetically more labile and thus, dynamically more flexible than covalently bound systems. This is important since supramolecular architectures... 

In recent years a more extensive exploration of other non-covalent interactions has led to the development of new templates. In principle, almost all design principles operative in the field of supramolecular chemistry [2-4] can be used to generate the template effect. They range from metal-ligand coordinate interactions - the strongest of the non-covalent interactions - to weak coulombic interactions. 

---