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Issue 6, 2020
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Rhenium(i) sapphyrins: remarkable difference between the C6F5 and CF3-substituted derivatives

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Abstract

Despite sapphyrins being the first ever reported extended porphyrins, their coordination chemistry remains quite limited. The newly gained access to meso-alkyl-substituted sapphyrins encouraged the study of their rhenium chelates in comparison with meso-aryl-substituted derivatives. Both the CF3- and C6F5-substituted sapphyrins act as bidentate/monoanionic ligands, with the coordination sphere of the rhenium(I) ion completed by three carbonyls. Three pyrrole moieties are not involved in metal binding and all were disclosed to be “normal” with their N atoms within the macrocycle's core of the C6F5-substituted sapphyrin, while in the CF3-substituted sapphyrin one pyrrole ring is “inverted” with its N atom on the periphery. These structural differences are demonstrated to affect both the optical and electrochemical properties of the Re(I) sapphyrins.

Graphical abstract: Rhenium(i) sapphyrins: remarkable difference between the C6F5 and CF3-substituted derivatives

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Supplementary files

Article information


Submitted
13 Nov 2019
Accepted
14 Dec 2019
First published
16 Dec 2019

Chem. Commun., 2020,56, 980-983
Article type
Communication

Rhenium(I) sapphyrins: remarkable difference between the C6F5 and CF3-substituted derivatives

P. Yadav, N. Fridman, A. Mizrahi and Z. Gross, Chem. Commun., 2020, 56, 980
DOI: 10.1039/C9CC08877F

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