Crystal structure of β-copper phthalocyanine

The crystal structure of the β-polymorph of copper phthalocyanine has been determined from three-dimensional X-ray diffraction data. A total of 1691 structure amplitudes was used in the refinement which resulted in R= 7·3% and standard deviation of bond lengths of 0·005 Å. The structure is isomorphous with those of the metal-free1 and nickel2 phthalocyanines.