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An expanded porphycene with high NIR absorptivity that stabilizes two different kinds of metal complexes

A new 26 π‐electron expanded porphycene (5) has been prepared via 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 (8) and a ruthenium complex (9). 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 (5) and the bis‐rhodium complex (8) are considered to Hückel‐type aromatic systems. This conclusion is supported by DFT calculations.

Authors:   Gonzalo Anguera Pujadas, Won-Young Cha, Matthew Darren Moore, James Thomas Brewster II, Michael Ying Zhao, Vincent M Lynch, Dongho Kim, Jonathan L. Sessler
Journal:   Angewandte Chemie
Year:   2018
Pages:   n/a
DOI:   10.1002/ange.201711197
Publication date:   05-Jan-2018
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