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|Title:||Determination of stability constants of charge transfer complexes of iodine monochloride and certain ethers in solution at 303 K by ultrasonic method|
Ali, S J Askar
Mahaboob, P A Abdul
|Abstract:||Ultrasonic velocities (<i style="">U</i>), 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 <i style="">n</i>-hexane have been used as solvents. Acoustical parameters such as adiabatic compressibility (β), absorption coefficient (α/<i style="">f<sup>2</sup></i>), internal pressure (π<sub>i</sub>) and cohesive energy (CE) values are calculated from the measured values of <i style="">U</i>, 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 (<i style="">K</i>) are calculated for these complexes. The free energy changes (Δ<i style="">G</i>) for the formation of these complexes are also calculated from <i style="">K</i> 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 (Δ<i style="">G</i><sup>#</sup>) and viscous relaxation time (<img src='/image/spc_char/tow.gif' border=0> ) are found to be almost constant for these complexes indicating the formation of similar charge transfer complexes in these systems.|
|ISSN:||0975-1041 (Online); 0019-5596 (Print)|
|Appears in Collections:||IJPAP Vol.44(12) [December 2006]|
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