An Expanded Porphycene with High NIR Absorptivity That Stabilizes Two Different Kinds of Metal Complexes

Angewandte Chemie
Gonzalo AngueraJonathan L Sessler

Abstract

A new expanded porphycene with 26 π-electrons has been prepared by the McMurry coupling of 1,4-bis(3,4-diethyl-2-pyrryl)benzene dialdehyde. Expansion of the porphycene framework provides a ligand capable of stabilizing a bis(rhodium) and a monoruthenium complex. These new porphycene derivatives absorb strongly in the NIR spectral region, with appreciable absorptivity up to 1300 nm. On the basis of their ground- and excited-state spectroscopic features and structural parameters, both the free-base system and the bis(rhodium) complex are considered to be Hückel-type aromatic systems. This conclusion is supported by DFT calculations.

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Citations

May 28, 2019·Physical Chemistry Chemical Physics : PCCP·Guglielmo Monaco, Riccardo Zanasi
Jan 9, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Qi LuoJiangbin Xia

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