Molecular interactions in binary mixtures of 2-aminoethanol with 1,4-dioxane and dimethyl sulphoxide investigated by static permittivity measurements

作者：Sengwa R J^*; Khatri Vinita; Choudhary Shobhna

来源：Indian Journal of Chemistry - Section A: Inorganic, Physical, Theoretical and Analytical Chemistry , 2010, 49(12): 1612-1616.

• Solution chemistry
• Molecular interactions
• Dielectric constants
• Hydrogen bonded interactions
• Aminoethanol
• Dioxane
• Dimethyl sulphoxide

The relative static permittivity (dielectric constant) at 1 MHz and high frequency limit permittivity at wavelength of sodium-D line of the binary mixtures of 2-aminoethanol with 1,4-dioxane or dimethyl sulphoxide over the entire composition range have been investigated at 30 degrees C. The concentration dependent values of excess permittivity and Kirkwood correlation factor of the binary mixtures indicate the formation of hydrogen bonded molecular interactions between these unlike molecules, which modify the dipolar ordering of the self-associated structures of 2-aminoethanol molecules. 2-Aminoethanol forms 1:1 complexes with dimethyl sulphoxide with increase in number of effective parallel aligned dipoles, while with 1,4-dioxane it forms 2:1 stable adducts, which decrease in number of effective parallel aligned dipoles in their binary mixtures.

• 出版日期2010-12