Substitution and exchange

The mechanism of molecular recognition reactions (kinetics and mechanism of substitution and exchange reactions with participation of polycomplexes and free chains) is considered. 

Mechanism of Molecular Recognition and Kinetics of Interpolymer Substitution and Exchange Reactions... 

The mechanism for substitution of X at five-co-ordinate [Ir(cod)(phen)X] (X=I or SCN) by ethylenediamine is dissociative. Substitutions and exchange at five-co-ordinate nickel and palladium complexes containing tertiary phosphines and uni- or bi-dentate carbaboranyldithiocarboxylate ligands have been studied, but quantitative kinetic data are not yet available. ... 

Carbonyls.—Substitution and exchange of the carbonyl groups in [M(X)(CO)5] (M = Mn or Re, X=halide) occurs preferentially at the cis position as described in Chapter 1 and a recent report indicates that this stereochemical selectivity also extends to incorporation of 0 into [M(CO)6(L)]+ (M=Mn or Re, L=PMe2Ph, MeCN, or py) on reaction with The importance of the degree of positive... 

Bond and co-workers (303, 540,541) also utilized (ESMS) to study Ugand-exchange reactions. For example, while cobalt(III) tris(dithiocarbamate) complexes are inert to substitution and exchange reactions, they do undergo ligand exchange at elevated temperatures and upon controlled-potential oxidation and reduction (Fig. 59) (541). 

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