The first Fe(0)-catalyzed alkyne carboxylation using CO2 is reported using Fe(0)-phenanthroline complexes, and DFT calculations suggest spin crossover from triplet to quintet along the reaction.
H. Wang, Q. Zhang, H. Yu, K. Jacob, A. Bousseksou, P. Hapiot, J. Pozzo and D. Astruc, Chem. Commun., 2026, Accepted Manuscript , DOI: 10.1039/D6CC00893C
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