H. Falk et A. Suste, ON THE CHEMISTRY OF PYRROLE PIGMENTS .90. PYRIDINOLOGOUS LINEAR TRIPYRROLES AND TETRAPYRROLES, Monatshefte fuer Chemie, 124(8-9), 1993, pp. 881-891
One pyridinologous linear tripyrrole and two pyridinologous linear tet
rapyrroles were prepared, and their structural aspects derived from sp
ectroscopic measurements and force field calculations. The properties
of these novel pyrrole pigments are compared with those of analogous l
inear tri- and tetrapyrroles.