Protonation made easy: The formation and crystal structure determination of phthalocyanine protonated at the meso- and isoindole nitrogen atoms (see picture) are achieved by using the free base and a zinc complex of saddle-distorted octaphenylphthalocyanine, respectively. The saddle deformation alters the electronic structure of the phthalocyanine ring and facilitates its protonation. Copyright © 2011 WILEY-VCH Verlag GmbH &amp
Co. KGaA, Weinheim.