On the Chemistry of Pyrrole Pigments, XC: Pyridinologous Linear Tri- and Tetrapyrroles

Article abstract of DOI:10.1007/BF00816411

One pyridinologous linear tripyrrole and two pyridinologous linear tetrapyrroles were prepared, and their structural aspects derived from spectroscopic measurements and force field calculations.The properties of these novel pyrrole pigments are compared with those of analogous linear tri- and tetrapyrroles. - Keywords.Pyridinologous linear tri- and tetrapyrroles; 1H-NMR spectra; UV-Vis spectra; Fluorescence; pK_a-values; Configuration; Conformation.