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The densities (ρ) and speeds of sound (u) for glycine in aqueous solutions of (0.01, 0.02, 0.03, and 0.04) mol·kg-1 sulphathiazole drug have been measured at T = (288.15, 293.15, 298.15, 303.15 and 308.15) K, using vibrating tube digital densimeter and sound analyser Anton-Paar Model DSA - 5000. The apparent molar properties like apparent molar volume (vφ), apparent molar adiabatic compressibility (Kφ, s) and the apparent molar volume (Vφ 0) and adiabatic compressibility at infinite dilution (Kφ, s 0) of glycine have been determined in water as well as in ternary mixtures containing sulphathiazole drug at different concentrations and at different temperatures from experimental data of densities and speeds of sound under atmospheric pressure. These data were also used to calculate the transfer parameters. Transfer parameters have been explained from the point of view of concentration dependence of solute-solute and solute-solvent interactions. The limiting apparent molar expansibility (Eφ°) values for glycine in aqueous solutions of drug have been calculated. The calculated values of thermal expansion coefficient (α2) have small and positive values. These results are explained on the basis of drug-amino acid - water interactions and hydrophobic-hydrophilic interactions. [ABSTRACT FROM AUTHOR]

Significant attention has been given to organotin (IV) amino acids compounds in recent years. Organometallic compounds are better known for their potentiality to stabilize peculiar stereochemistry of their complexes and application in agriculture, catalysis and as single source precursors. Due to the better stability and diverse molecular structures the complexes own a wide range of biological activities. These individual properties create an alliance of action in the hybrid complex. In this review, we discuss the chemistry of organotin (IV) complexes and their different aspects in various fields. The aim of the present review is to evaluate the synthesis, characterization and biological activities of organotin compounds. [ABSTRACT FROM AUTHOR]

In this work, densities have been measured for glycinein aqueoussolutions of (0.01, 0.02, 0.03, and 0.04) mol·kg–1sulfanilamide, sulfanilic acid, and sulfosalicylic acid dihydrateat temperatures from (288.15 to 308.15) K, using vibrating tube digitaldensimeter. These solution densities were used to calculate the partialmolar volume values at infinite dilution, Vϕ∞,for the glycine. The calculated parameters are used to interpret thesolute–solute and solute–solvent interactions and structuremaking/breaking ability of the amino acid in the given aqueous sulfadrug solution. [ABSTRACT FROM AUTHOR]