Synthesis, properties and coordination chemistry of [14]triphyrins(2.1.1)

Abstract

Recently, synthetic efforts to prepare novel modified porphyrinoid skeletons have been an important area of research due to its promising applications in various fields ranging from material chemistry to life science. The formation of [14]triphyrin(2.1.1) as relatively new congeners among the porphyrinoids seems quite astonishing because porphyrin macrocyclic core itself is perturbed to afford a contracted structure retaining aromaticity, however, exhibiting fundamentally different properties compared to other members in the porphyrin family. Although [14]triphyrin(2.1.1) chemistry has been mentioned in the literature, an effort which exclusively focussed on the development of [14]triphyrin(2.1.1) was not made. In the current review, we focused on the recent advancement in the chemistry of [14]triphyrin(2.1.1) including its synthesis, structure, coordination chemistry, photophysical and electrochemical properties. A fundamental insight in the triphyrin chemistry has immense scope since the reactivity of the molecule is less explored other than using as a ligand to prepare a few metal complexes and coupling reactions. The present review will definitely add to the furtherance of the chemistry of [14]triphyrin(2.1.1).