Transition metal complexes reactivity with small molecules

The Reactivity of Transition Metal Complexes with Small Molecules... 

In the oxidation reactions the problem of oxidant activation is frequently met (in the general case, activation of small molecules [5]). For example, comparatively low reactivity of 02, H202 and 03 under soft conditions requires their prior thermal or catalytic activation, for instance, with the help of transition metal complexes or irradiation. Activation of molecular oxygen by one-electron reduction consumes energy ... 

This chapter illustrates the complementarity of photochemical and radiation chemical techniques to elucidate elementary pathways in mechanistically rich systems. Some of the mechanistic conclusions that have resulted from these studies in aqueous media are presented. Extreme (both high and low) oxidation states of transition-metal complexes are included. Reactivity with respect to electron transfer reactions and small-molecule activation are addressed. 

Crown thioethers have found a number of uses as ligands, related particularly to their affinity for late- and post-transition elements. Attention has focused on the coordination chemistry of silver, with relevance to photography, silver-selective electrodes, and ligands for chromogenic analysis and recovery of silver. Biomedical applications include the removal of toxic heavy metals such as Cd, Hg, Pb, and T1 and delivery of radioisotopes such as ""Tc, Re, and Re to specific sites in the body. Finally, some crown thioethers have been found to promote novel reactivity in their transition metal complexes, including activation of small molecules such as N2, CO and C2H4. 

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