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This research investigates the C═O bond cleavage of CO2 facilitated by a cobalt-phosphorus complex.

April 25, 2026Organometallics0 citations

Flash Communication: C═O Bond Cleavage of CO 2 by a Geometrically Constrained Phosphorus-Coordinated Cobalt Complex

Key Points

This research investigates the C═O bond cleavage of CO2 facilitated by a cobalt-phosphorus complex.
Treatment of dimetic complex with CO2 (1 atm) to induce bond cleavage.
Characterization of the product complex through SCXRD, NMR, and elemental analysis.
DFT calculations to support findings.
Cleavage of the C═O bond in CO2 was achieved, yielding a CO-bridged dimeric complex (3) and compound (4).
Characterization confirmed the formation of the new complexes through various analytical techniques.

Abstract

Treatment of dimeric complex (L1P)Co(PMe3)Cl2 (1) with CO2 (1 atm) results in the cleavage of the C═O bond in CO2, likely facilitated by the cobalt–phosphorus cooperativity, generating the CO-bridged head-to-tail dimeric complex ((L1)CoCl)2(μ-CO) (3) and compound O═P(N(o-N(2-pyridyl)(p-tBu)C6H3)2) (4). This reaction represents a rare example of cleavage of the C═O bond in CO2 enabled by late 3d metal–ligand cooperativity. Complex 3 was fully characterized by SCXRD, NMR, and elemental analysis as well as DFT calculations.

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