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A Synthetic Strategy for Cofacial Porphyrin-Based Homo- and Heterobimetallic Complexes.


ABSTRACT: We present a straightforward and generally applicable synthesis route for cofacially linked homo- and heterobimetallic porphyrin complexes. The protocol allows the synthesis of unsymmetrical aryl-based meso-meso as well as ?-meso-linked porphyrins. Our method significantly increases the overall yield for the published compound known as o-phenylene-bisporphyrin (OBBP) by a factor of 6.8. Besides the synthesis of 16 novel homobimetallic complexes containing MnIII , FeIII , NiII , CuII , ZnII , and PdII , we achieved the first single-crystal X-ray structure of an unsymmetrical cofacial benzene-linked porphyrin dimer containing both planar-chiral enantiomers of a NiII 2 complex. Additionally, this new methodology allows access to heterobimetallic complexes such as the FeIII -NiII containing carbon monoxide dehydrogenase active site analogue. The isolated species were investigated by various techniques, including ion mobility spectrometry, DFT calculations, and UV/Vis spectroscopy. This allowed us to probe the influence of interplane distance on Soret band splitting.

SUBMITTER: Schissler C 

PROVIDER: S-EPMC7898677 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature

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A Synthetic Strategy for Cofacial Porphyrin-Based Homo- and Heterobimetallic Complexes.

Schissler Christoph C   Schneider Erik K EK   Felker Benjamin B   Weis Patrick P   Nieger Martin M   Kappes Manfred M MM   Bräse Stefan S  

Chemistry (Weinheim an der Bergstrasse, Germany) 20210118 9


We present a straightforward and generally applicable synthesis route for cofacially linked homo- and heterobimetallic porphyrin complexes. The protocol allows the synthesis of unsymmetrical aryl-based meso-meso as well as β-meso-linked porphyrins. Our method significantly increases the overall yield for the published compound known as o-phenylene-bisporphyrin (OBBP) by a factor of 6.8. Besides the synthesis of 16 novel homobimetallic complexes containing Mn<sup>III</sup> , Fe<sup>III</sup> , Ni  ...[more]

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