Work

Rhodium(II) Porphyrins: Unusual Transition States and the Quest for Catalytic Turnover

Year: 2026

Type: article

Abstract: ABSTRACT Rh(II) porphyrin complexes have been used to realize remarkable stoichiometric transformations, which include C─H activation in methane as well as C─H and O─H activation in methanol at room temperature. However, their catalytic application is often hindered by the formation of strong Rh─C and Rh─X bonds over the course of the catalytic cycle, in addition to a tendency to form dimeric species. In this Concept article, we highlight the unusual transition states and reaction steps observed with Rh(II) porphyrins, as well as the challenges associated with the regeneration of Rh(II) during catalytic cycles. We discuss how photochemistry, electrochemistry paired with spatial confinement, and remote metal–metal collaboration in solid matrices can be used to leverage the latent potential of Rh(II) porphyrin reactivity in catalysis.

Source: ChemCatChem

DOI: 10.1002/cctc.70725

Authors: Zihang Qiu, Constanze N. Neumann

Institutions: Dalian University of Technology, Max-Planck-Institut für Kohlenforschung

Language: English

Topic: Porphyrin and Phthalocyanine Chemistry

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,500

Funders: Max-Planck-Gesellschaft, Fundamental Research Funds for the Central Universities