ABSTRACT
The magnetochemical aspects of stereochemistry were limited to the analysis of intercommunication of effective magnetic moments and the structure of the coordination center of innercomplex compounds with some transition d-elements. Unlike its electric analogue the Cotton-Mouton effect has been applied to conformational analysis only to a small extent, although it should carry information on three-dimensional structure of molecules. Magnetooptical characteristics of polymeric system have a number of salient features. Macromolecules because of their large dimensions can have very high magnetic anisotropies and, therefore, they are to a large extent subjected to ordering in magnetic fields. In concentrated solutions and melts the strength of intermolecular coupling often reaches its limit, because very effective correlations between chains cause the appearance of the liquid-crystalline state. A large nicked circular plasmid was found to behave very much like the linear duplex DNA molecules. In contrast, the Cotton-Mouton constant of the same plasmid with natural superhelical density actually grows nearly linearly with ionic strength.
