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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.44 [2006] >
IJPAP Vol.44(12) [December 2006] >
| Title: | Determination of stability constants of charge transfer complexes of iodine monochloride and certain ethers in solution at 303 K by ultrasonic method |
| Authors: | Kannappan, V
Ali, S J Askar
Mahaboob, P A Abdul |
| Keywords: | Ultrasonic velocity
Formation constants
Donor-acceptor complexes
Iodine monochloride
Ethers |
| Issue Date: | Dec-2006 |
| Publisher: | CSIR |
| IPC Code: | B01J19/10 |
| Abstract: | Ultrasonic velocities (U), densities (ρ), and coefficient of viscosities (η) are measured
for solutions containing iodine monochloride (ICl) and one of the following
ethers in equimolar concentration in the range 0.001-0.01M at 303 K. The
diphenyl ether, 4-chloroanisole, anisole and 1,4-dioxane are used as donors and
the dichloromethane, chloroform, carbon tetrachloride and n-hexane have been used as solvents. Acoustical parameters such as
adiabatic compressibility (β), absorption coefficient (α/f2), internal pressure (πi) and cohesive
energy (CE) values are calculated from the measured values of U, ρ and η. The trend in the acoustical
parameters establishes the formation of charge transfer complexes between
iodine monochloride (acceptor) and ethers (donors). The stability constants (K) are calculated for these complexes.
The free energy changes (ΔG) for the
formation of these complexes are also calculated from K values. The formation constants with polarizability, dielectric
strength and dipole moment of the donor and solvent molecules have been
correlated. The free energy of activation (ΔG#)
and viscous relaxation time ( ) are
found to be almost constant for these complexes indicating the formation of
similar charge transfer complexes in these systems. |
| Page(s): | 903-908 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.44(12) [December 2006]
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