The macrocycle made of sixteen pyrrole rings with eight bridging carbons between bipyrrolic building blocks and total of 64 pi-electrons are conjugated in a cyclic fashion.  One of the largest porphyrinoids ever synthesized and identified crystallographically. (J. Setsune, S. Maeda, J. Am. Chem. Soc. 2000, 122, 12405-12406)

Contact:  setsunej@kobe-u.ac.jp