Diamagnetic Anisotropies of Metal-Free, Nickel(II), and Zinc(II) Phthalocyanines

Abstract
Diamagnetic susceptibilities and anisotropies of metal‐free, nickel(II), and zinc(II) phthalocyanines are reported. Calculations based on Pauling's semiclassical model give very poor agreement with the experimental results. The results are interpreted following the procedure of Amos and Roberts from which it emerges that only part of the total anisotropy can be attributed to the π‐electron macrocyclic ring.
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