CHEM01200604005 A. K. Pathak - Homi Bhabha National Institute
CHEM01200604005 A. K. Pathak - Homi Bhabha National Institute
CHEM01200604005 A. K. Pathak - Homi Bhabha National Institute
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M <br />
DE<br />
= (r, ω)C DE , (r, ω) C DE , ] + (22)<br />
M <br />
DE<br />
= (r, ω)C DE , (r, ω) C DE , ] + (23)<br />
<br />
C DE , = S(0) ρg, ; , = S(0) ρg <br />
, (24)<br />
<br />
C DE , S0 <br />
C DE , S0 <br />
<br />
ρ<br />
<br />
ρ<br />
ρg , <br />
ρg , <br />
<br />
0 <br />
<br />
ρg , (25)<br />
0 <br />
<br />
ρg , (26)<br />
Equations (16) and (17) are derived based on some approximations including<br />
truncation of higher order terms, and the accuracy of these expressions can be tested if<br />
experimental results are available for the systems with large and wide range of values of<br />
n. However, the results are available for the systems clusters of small size, since<br />
experimentally, it is difficult to prepare the clusters of desired size. Therefore, to obtain<br />
the bulk values of ∆E DE ∞ and ∆E DE ∞ from the knowledge of experimental results<br />
of ∆E VDE (n) and ∆E ADE (n) for few clusters of finite size is problematic. So what is<br />
needed are expressions for ∆E VDE (n) and ∆E ADE (n) valid for small size clusters that<br />
converge to the respective equations (16) and (17) valid for large size clusters. Motivated<br />
by the derived Eqs.(16) and (17), the more general expressions similar to those equations<br />
defined as is proposed<br />
∆E VDE (n) = ∆E DE ∞ + M DE<br />
+ M DE<br />
(27)<br />
<br />
∆E ADE (n) = ∆E DE ∞ M DE<br />
+ M DE<br />
, (28)<br />
by introducing a parameter<br />
representing the contribution from the solute volume as<br />
well as the charge on the solute ion. It is assumed here that the parameter<br />
to be given by<br />
129