Anisotropic shielding effect by the

The magnitudes of the anisotropic shielding effects by the aromatic rings of the guest compoimds on the protons of the cyclodextrin are evaluated by use of the results of the calculation by Johnson and Bovey [10]. 

Either chloroform or carbon tetrachloride also form the inclusion complexes as shown in Fig. 2. The formation of 2 in Fig. 2 is further confirmed by the fact that the H chemical shift of chloroform is shifted toward lower magnetic field by 0.14 ppm, which is due to the anisotropic shielding effect by the aromatic ring of phenolate ion. 

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