Innovative thermal reactions create 52-electron clusters in the presence of internal alkynes, suggesting new pathways in metal-mediated transformations.
Thermal reactions of [Ru3(CO)10(μ-dppe)] (dppe = 1,2-bis(diphenylphosphino)ethane) and internal alkynes (RC≡CR, R = Ph, Et) afford 52-electron trinuclear clusters which are best considered as comprising an 18-electron cyclic metallophosphine ligand coordinated to a diruthenium center. They result from an unexpected and unprecedented series of metal-mediated ligand transformations, including the double P–Ph cleavage of one end of the diphosphine and capture of each of the resulting phosphinidine and benzyne ligands by the alkyne.
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Bhowmik et al. (2025) studied this question.
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