Reported here is a new hybrid macrocycle, cyclofuranpyridine pyrrole (1), that bears analogy to the previously reported mixed heterocycle system cyclopyridinepyrrole (2) and cyclopyrrole 3, an all-pyrrole 22 π-electron aromatic expanded porphyrin. The oxidized, dianionic form of 1, [1 - 4H]2-, has been characterized as its uranyl complex. In contrast to 2 and 3 and in spite of the presence of a 2,6-disubstituted pyridine subunit, the uranyl complex of [1 - 4H]2- displays solid-state structural and solution-phase spectroscopic features consistent with contributions to the overall electronic structure that involve a conjugated, (4n + 2) π-electron aromatic periphery.
All Science Journal Classification (ASJC) codes
- Colloid and Surface Chemistry