NEMATIC MIXTURE METHODS FOR THE DETERMINATION OF CHEMICAL-SHIFT ANISOTROPY

The discrepancy in the H-1 and C-13 chemical shift anisotropy values f or chloroform determined using ENEMIX and other methods [J. Vaara, K. Oikarinen, J. Jokisaari, J. Lounila, Chem. Phys. Lett. 253 (1996) 340] has been shown to arise from the use of the reference compound and no t because of hydrogen bonding between chloroform and the cyanide group of the solvent used. The NEMIX method [C.L. Khetrapal, A.C. Kunwar, C hem. Phys. Lett. 82 (1981) 170] is shown to give more consistent resul ts. (C) 1998 Elsevier Science B.V. All rights reserved.