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Updated: Jan 17, 2026

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Cyclic Metallophosphines via an Unexpected Series of Metal-Mediated P-C and C-C Bond Rearrangements
Mihir L Bhowmik1,2, Md Abdullah Al Mamun1, Vladimir N Nesterov3
1Department of Chemistry, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh.
Abstract:
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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