Ligand exchange method

Figure 14. Immobilization cubane complexes by ligand exchange method on CMS.

The use of pH-sensitive fluorescent indicators as spray reagents has been recently examined for the determination of sulphur-containing pesticides and amino acids separated by TLC [158,159]. The procedure is adapted from a ligand-exchange method of Frei and Mallet [160]. The separated pesticides are brominated directly on the TLC plate. This treatment oxidizes the pesticides and liberates hydrobromic acid as a side product. On... 

Hirose, K., Dokiya,Y. and Sugimura, Y., 1982. Determination of conditional stability constants of organic copper and zinc complexes dissolved in seawater using ligand exchange method with EDTA. Mar. Chem., 11 343-354. 

Metal etherates were used to obtain complexes by the ligand-exchange method in a series of transformations (3.102) ... 

The ligand-exchange method is the most used method in the synthesis of ji-complexes. The examples of such compounds, obtained from metal carbonyls and cyclic unsaturated hydrocarbons, are represented in a classic issue [11], Among these ligand-exchange syntheses, we mention here the transformations (3.119)—(3.121) ... 

Among molecular complexes recently obtained by the ligand-exchange method we emphasize the coordination compounds of diorganoditellurides. Thus, the interaction (3.128) of molybdenum hexacarbonyl with diphenyltelluride in THF leads to the formation of a binuclear complex 705 [272] ... 

The ion or ligand exchange method results from an electrostatic or chemical interaction between TMC and the support. The support surface plays the role of supramolecular counter-ion or ligand. The resulting interaction is generally strong and leads to nano-sized (1-2-nm) particles after activation. 

Here, we report on dissociation kinetic studies of the rare earth elements Sm(III) and Eu(III) from PAA and HA. The solution chemistry of both metals is essentially identical, and they are frequently used as analogs for trivalent actinide elements. We have studied the rare earth dissociation kinetics from different size fractions of PAA and HA using ion exchange and ligand exchange methods. The differences in metal labilities for complexes of the two polyelectrolytes and the effect of polyelectrolyte molecular weight on binding times are discussed in the context of possible polyion-cation interactions in these systems. 

Hirose, K., Y. Dokiya, and Y. Sugimura (1982), Determination of Conditional Stability Constants of Organic Copper and Zinc Complexes Dissolved in Seawater Using Ligand Exchange Method with EDTA, Mar. Chem. 11, 343-354. 

The fuel for the Aerobee rocket is a mixture of hydrazine (HjN-NH,), methylhydrazine (H3C-NH-NH2), and unsymmetrical dimethylhydrazine, ((CHj)2N-NH2). You are to follow the ligand exchange method described in Anal. Chim. Acta. 37, 102 (1967) and determine the hydrazines by the method of R.A. Penneman and L.F. Audrieth, Anal. Chem., 20, 1058 (1948). 

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