Affiliation:
1. Department of Chemistry, D.A.V. College, Sector-10, Chandigarh-160010, India
Abstract
The ultrasonic velocities of solutions of Bu4NBPh4, Bu4NClO4, [Cu(AN)4]NO3, [Cu(BN)4]NO3,
[Cu(Phen)2]NO3, [Cu(DMPhen)2]NO3, [Cu(Bipy)2]NO3 and [Cu(TU)4]NO3 (where AN = acetonitrile,
BN = benzonitrile, Phen = 1,10-phenanthroline, DMPhen = 2,9-dimethyl-1,10-phenanthroline, Bipy
= 2,2′-bipyridyl and TU = thiourea) were measured in the concentration range 0.03-0.27 M in
dimethylsulfoxide (DMSO), nitromethane (NM) and binary mixtures of DMSO + NM containing 0,
20, 40, 60, 80 and 100 mol% NM at 298 K in the present studies. Using ultrasonic velocity and density
data, isentropic compressibility (κs) and apparent molal isentropic compressibility (κs,φ) for electrolytes
in DMSO + NM mixture have been calculated. Result shows that copper(I) electrolytes show less
solvation in NM rich regions indicating structure breaking tendency of nitromethane. Extent of solvation
in Cu(I) ions decreases in the order: [Cu(AN)4]+ > [Cu(BN)4]+ > [Cu(TU)4]+ > [Cu(DMPhen)2]+
> [Cu(Phen)2]+ > [Cu(Bipy)2]+.
Publisher
Asian Journal of Chemistry