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Title: Ultrasonic investigations of X ... HO bond complexes
Authors: Rastogi, Madhu
Awasthi, Aashees
Gupta, Manisha
Shukla, J P
Issue Date: Apr-2002
Publisher: NISCAIR-CSIR, India
Abstract: The measurements of ultrasonic velocity and density were made for the ternary mixtures of benzyl chloride and bromobenzene with o-cresol in a non-polar solvent, carbon tetrachloride at various concentrations for varying temperatures (30, 40, 50 °C) at a frequency of 2 MHz. Various physical parameters such as adiabatic compressibility, intermolecular free length and their excesses in mixtures, molar sound velocity, molar compressibility, acoustic impedance and degree of intermolecular attraction were evaluated. Weak molecular interactions taking part between the unlike molecules of solute in each mixture have been studied through these physical parameters and their excess values. The ultrasonic velocity shows a maximum for each mixture at specific temperatures, exhibiting maximum interactions occurring between solute molecules at that particular concentration giving rise to complex formation. On further increasing or decreasing the concentration,  molecular association decreases. The excess value data evaluated for these mixtures also support the existence of complex formation . The experimental velocities have been compared with theoretically estimated velocities using Nomoto relation and also ideal mixing relation. The deviation of theoretical values of velocities from experimental values also supports the existence of complex formation.
Page(s): 256-263
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Appears in Collections:IJPAP Vol.40(04) [April 2002]

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