A direct link between annulene and porphyrin chemistry--21-vacataporphyrin.
A novel molecule, aza-deficient porphyrin 5,10,15,20-tetraaryl-21-vacataporphyrin has been synthesised by a substraction of a tellurium atom from 5,10,15,20-tetraaryl-21-telluraporphyrin under treatment of HCl. The new macrocycle is an annulene-porphyrin hybrid and at the same time is directly related to 21-heteroporphyrins but has a vacant space instead of heteroatomic bridge. The molecule preserves the fundamental structural and spectroscopic features of the parental 5,10,15,20-tetraarylporphyrin with three nitrogen atoms and two CH groups favorably prearranged for coordination.
Pacholska
Ewa
E
Department of Chemistry, University of Wrocław ul. F. Joliot-Curie 14, 50-383 Wrocław, Poland.
Latos-Grazyński
Lechosław
L
Ciunik
Zbigniew
Z