• Sumer D. Thakur
• Shalini R. Singh
• Gunwant H .Kurhade
• Kavita P. Kakade

Thiazine is six membered heterocyclic ring containing Nitrogen and Sulhpur placed at 1, 3 position. In present investigation complex formation between thiazine and solvant are studied by evaluating certain acoustic parameter.The Complex formation in binary liquid mixtures of 1-4 dioxane and water with 4-(2-hydroxy phenyl)-5 benzoyl-6-(4-methoxyphenyl)-2-imino-6H-2,3-dihydro-1,3 thiazine L2 , 4-(2-hydroxy phenyl)-5 benzoyl-6-(2-furyl)-2-imino-6H-2,3-dihydro-1,3 thiazine L3, 4-(2-hydroxy -5-methyl phenyl)-5 benzoyl-6-(4-methoxyphenyl)-2-imino-6H-2,3-dihydro-1,3 thiazine L5 has been studied by measuring ultrasonic velocity at 2 MHz, by using in the concentration range of 0.01 M at 32 0C the parameters under investigation are ultrasonic velocity (u), adiabatic compressibility (βs), intermolecular free length,(Lf) Apparent molal volume(Фv), Apparent molal Compressibility(Фk ), specific acoustic impedance(Z) and Relative association(RA ) These parameters have been utilized to study the solute–solute interactions in these systems. The ultrasonic velocity shows a decrease in value with respect to concentraction and adiabatic compressibility show corresponding increase in value with respect to concentraction for these ligands . The results indicate the occurrence of complex formation between unlike molecules through intermolecular hydrogen bonding between oxygen atom of dioxane molecule and hydrogen atom of ligands . The variation of these parameters with percentage indicates the possibility of the complex formation in these systems.

Acoustical impedance, Dioxane-water mixtures, thiazine

"Acoustic parameters of some 1-3 thiazine in binary mixture of 70% dioxane + water", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 2, page no.106-110, February-2020, Available :http://www.jetir.org/papers/JETIRDI06021.pdf

"Acoustic parameters of some 1-3 thiazine in binary mixture of 70% dioxane + water", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 2, page no. pp106-110, February-2020, Available at : http://www.jetir.org/papers/JETIRDI06021.pdf