New Tetrapyrrolic Macrocycle: α,β,γ-Triaazatetrabenzcorrole

Article abstract of DOI:10.1021/ja00267a024

A previously reported divalent germanium phtalocyanine (PcGe^II) exhibiting unusual electronic and mass spectra when compared with a corresponding high-valent germanium phtalocyanine has been identified as hydroxygermanium α,β,γ-triazatetrabenzcorrole (TBC^3-Ge^IVOH).This was determined from elemental analyses (C, H, N, Ge, and O), spectral measurements (EI- and FD-MS, via IR, and 1H NMR), measurements of chemical reactivity, and oxidative titration results.This TBC ring is a new tetrapyrrolic macrocycle.TBCs containing Si, Al, and Ga have also been produced in a reaction mixture of NaBH4.This type of metalloid Pcs ring contractive reaction is generally observed to occur with the introduction of a reductive reagent such as NaBH4 and H2Se.The molecular symmetry of a TBCGe moiety is exactly C₁ or an approximately 2-fold symmetry showing some distortion.