THE STUDY OF THE STRUCTURE OF SOLUTIONS OF THE H-COMPLEXES OF DIESTERS OF TETRACARBOXYLIC ACIDS WITH DIAMINES BY THE LIGHT-SCATTERING METHOD .2. INVESTIGATION OF THE H-COMPLEX OF DIMETHYL OF BENZOPHENONETETRACARBOXYLATE WITH DIAMINODIPHENYLMETHANE

The process of structurization in solutions of H-complexes of dimethyl 3,3',4,4'-benzophenonetetracarboxylate with 4,4'-diaminodiphenylmetha ne has been investigated in 90 % aqueous methanol in the concentration range 6 to 0.2 g L(-1). Structural instability of the solutions has b een found in the concentration range from 1.2 to 2 g L(-1). The additi on of an ionogenic substance stabilizes the solution and results in mo notonic changes in the structural parameters as solution is diluted. A tendency toward variation of the extemum in the mean correlation radi us of the polarizability fluctuation has been found in the concentrati on range 0.6-1 g L(-1), which had been observed previously for polymer systems.