Atom and charged dimer formation

Soon after absorption of the irradiation pulse by a solution containing the monovalent solvated cation M+, the population of atoms is created by the reaction depicted in Eq. (2). Formation of the atom is correlated with the decay of the solvated electron and this correlation enables determination of the rate constant of the reaction. The silver ion aqueous solution was the first system thoroughly studied by pulse radiolysis and has recently been revisited (Fig- 2). The optical absorption spectra of transient silver atoms and charged dimers produced by the reaction depicted in Eq. (10) have been observed by pulse radiolysis in various solvents, for example water (Table 1). The rate constants are generally diffusion-controlled, as are those for the corresponding reactions for formation of Tl and 

Although the properties of a bare metal cluster in the gas phase, e.g. the ionization potential, depend solely on the nuclearity, it is clear that any other molecule interacting with the metal atoms influences their behavior. 

No direct observation at room temperature has, however, yet been made on the dynamics of the reorganization of the solvent when the solvated cation is replaced by an isolated atom, because this process is much faster than the reduction reaction itself by esoiv - 

The interaction between an atom or a cluster, even when neutral, and a solvent is noticeable and induces specific properties that between a ligand and a metal is even stronger than the metal-solvent interaction. Thus the complexation has a marked influence on the reaction rate-constants and on the thermodynamics of the 

Metal ion Rate constant of atom formation, V (L mol s )I I Absorption maxima of atoms, A (nm) Rate constant of charged dimer formation k o, q, (Lmol s ) Absorption maxima of charged dimers, A (nm) 

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