The Asian Journal of Experimental Chemistry

Anil Kumar ¹, Seema Maan ¹, Simmi Tyagi ²

Affiliations
1 Department of Chemistry, D.A.V. (P.G.) College, Muzaffarnagar (U.P.), IN
2 Central Building Research Institute, CBRI (A Constitutent Establishment of CSIR), Ministry of Science and Technology (Government of India), Roorkee (Uttarakhand), IN

Abstract

The infrared and X-ray diffraction techniques have been used to study the structure of uranyl (II) stearate in solid state, whereas the structural changes of the metal soap in the solvent-mixture of 50% dimethylformamide and 50% benzene(V/V) at 40°C have been studied by the ultrasonic method. The appearance of two absorption bands at 1570 and 1440 cm^-1 which may be assigned to as υ_as COO^- and υ_s COO^- modes of carboxylate group of uranyl stearate indicate the ionic nature of this group in the soap. The XRD analysis reveals that uranyl soap has a single layer structure as proposed by vold and Hattiangdi for disoaps. Ultrasonic velocity measurement is employed to obtain various acoustic parameters and the critical micelle concentration, CMC(5.55×10^-4 mol. dm^-3) for the soap solutions. The values of ultrasonic velocity and acoustic impedance are found to decrease while adiabatic compressibility and intermolecular free length increase with increasing soap concentration.

Keywords

Metal Soap, Critical Micelle Concentration, Infrared, X-Ray, Ultrasonic Velocity, Acoustic Parameters.

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