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revised on 27.08.2020 and posted on 27.08.2020by Theo Maulbetsch, Doris Kunz
The successful synthesis of a
carbenaporphyrin ligand based on carbazole and triazolylidene (CTP) is
reported. Instead of a macrocyclic aromatic or antiaromatic character, the
aromaticity of each heterocyclic moiety is preserved, which results in optical
properties different from porphyrins, e.g. fluorescence. In Li+ and Sc3+ complexes
the ligand reveals striking geometric similarity to porphyrins, but is stronger