Abstract
Abstract The refractive index measurement technique is used to investigate molecular complex formation in liquid solutions and the association constants are determined directly. The association constants at 25 °C and heats of complexation for naphthalene–phenol, benzene–tetracyanoethylene, p-xylene–tetracyanoethylene, hexamethylbenzene–tetracyanoethylene, and triethylamine–iodine in cyclohexane are 8.2, 2.2, 8.6, 231, and 4620 dm3 mol−1 and 19.25, 11.30, 18.00, 32.21, and 51.46 kJ/mol, respectively. These values agree well with the literature data obtained by spectroscopic methods.
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