Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry
ISSN: 0975-413X
Abstract
Ion-solvent Interactions of some Chromium (III) Complexes in Nitromethane and Dimethylsulfoxide Studied Viscometrically at 298.15, 308.15 and 318.15 K
Author(s): Priyanka Sandhu, Hardeep AnandApparent molal volumes (V???¸) and viscosity B-coefficients of NH4X, (C3H7)4NX, (C4H9)4NX (X=[Cr(NCS)4(NH3)2]-) Bu4NClO4 and Bu4NBPh4 were determined from measured solution density (?¯??²) and viscosity (η) in Nitromethane (NM) and Dimethyl Sulphoxide (DMSO) at 298.15 K, 308.15 K and 318.15 K at various electrolyte concentrations. The apparent molal volumes were evaluated by Masson equation and were interpreted in terms of ion-solvent and ion-ion interactions. The viscosity data was analyzed by Jones-Dole equation to evaluate viscosity A and B coefficients. The derived parameters were split into the ionic contributions using which viscosity B± coefficients of various ions were evaluated and interpreted in terms of ion-solvent and ion-ion interactions respectively. The A coefficients were in reasonably good agreement with the limiting theoretical values (A?¯??¨) calculated using Falkenhagen-Vernon equation. Viscosity B± coefficients confirm the existence of some interactions of the chromium complex and ClO4 - ion with both NM and DMSO.
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