A Novel Naphthalocyanine Isomer: A Dinaphthophthalocyanine with C2v Symmetry

An adjacently dinaphtho-substituted phthalocyanine with C2v symmetry, which is a structural isomer of naphthalocyanines in the sense that eight benzene units are fused to the tetraazaporphyrin skeleton, has been synthesized and characterized by electronic absorption and magnetic circular dichroism spectroscopy, and molecular orbital calculations within the framework of the ZINDO approximation.