Polymeric phthalocyanines and their precursors, 6. Synthesis and analytical characterization of some octasubstituted phthalocyanines

Abstract Starting with 2,3,9,10,16,17,23,24‐phthalocyanineoctacarbonitrile (3a) different octa‐substituted phthalocyanines 4a–7a and 3b–7b with carboxylic acid, anhydride, imido and amido groups were prepared. IR and UV/VIS spectra are discussed in detail and compared with unsubstituted phthalocyanine (1). 3–7 may be considered as low molecular weight analogues of polymeric phthalocyanines 2 with different end groups.