Metal ions chemistry

L. E. Orgel, An Introduction to Transition Metal Ion Chemistry. Ligand Field Theory,... 

Takafuji, M., Ide, S., Ihara, H. and Xu, Z.H. (2004) Preparation of poly(l-vinylimidazolej-grafted magnetic nanoparticles and their application for removal of metal ions. Chemistry of Materials, 16 (10), 1977-1983. 

We turn now to the transition metal atoms in three series of 10 elements and the building towards a set of 18 electrons in them which is preceded by two Groups, 1 and 2 (Figure 2.2). Many of them and the early elements of Groups 1 and 2 are of immense importance in both geological and biological metal ion chemistry. As the... 

As well as sulfur, macrocycles containing other large donors such as tertiary phosphorus or arsenic atoms are also known, although the metal-ion chemistry of such ligands has been somewhat less explored. In part, this reflects the synthetic difficulties often encountered in the preparation of ligands containing these heteroatoms structures (49) (Horner, Walach Kunz, 1978), (50) (Kauffmann Ennen, 1981), and (51) (Mealli etal., 1985) provide three representative examples of such macrocycles. 

Resulting from the widespread interest in macrocyclic ligand chemistry, an impressive array of synthetic procedures for macrocyclic systems has been developed. In spite of this, the synthesis of a new ring system frequently turns out to be far from trivial. Indeed, synthetic macrocyclic chemistry is often very challenging and, as well as a thorough knowledge of any metal-ion chemistry involved, skill in the subtle art of organic synthesis is also a valuable asset for those involved in the preparation of new cyclic systems. 

A feature of the metal-ion chemistry of these large ring macrocycles is thus the structural diversity which may occur from one system to the next. This diversity can result directly from small changes in the structure of the cyclic ligand and is also aided by the inherent flexibility of the large rings involved. It is clearly also influenced by the nature of the other ligands available for complex formation. 

The metal-ion chemistry of polyether and related macrocyclic systems... 

The Transition Metal Ion Chemistry of Linked Maerocyclic Ligands Leonard F. Lindoy... 

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