Meso‐Diketopyripentaphyrin and Diketopyrihexaphyrin as Macrocyclic Tripyrrinone Ligands for NiII Ions. Issue 23 (28th November 2019)

• Record Type: Journal Article
• Authors: Mori, Daiki; Yoneda, Tomoki; Suzuki, Masaaki; Hoshino, Tyuji; Neya, Saburo
• Is Part Of: Chemistry, an Asian journal. Volume 14:Issue 23(2019)
• Page Start: 4169
• Page End: 4173
• Publication Date: 2019-11-28
• Subjects: Expanded Porphyrins -- Macrocyclic Complexes -- NNNO Ligand -- Porphyrins -- Tripyrrinone; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/asia.201901375
• Languages: English
• ISSNs: 1861-4728

Abstract

Abstract: We report expanded porphyrins with pyridine rings and two neighboring carbonyl groups, which allow Ni II ions to coordinate to the tripyrrinone‐type NNNO coordination structure with Ni−O bonds. The selectivity of tripyrrinone is superior to other pyrrolic or pyridinic cavities of expanded porphyrins. Introduction of α‐carbonyl pyridine next to the tripyrrolic conjugated structure is a powerful strategy for regioselective metalation of flexible expanded porphyrinoids. Abstract : Expanded porphyrins with a pyridine unit between two meso ‐carbonyl groups are reported. They coordinate to Ni II ions to produce a tripyrrinone‐type NNNO coordination structure. Coordination of the tripyrrinone units is highly regioselective in expanded circular pyriporphyrins with many coordination cavities in their structure.