Addition of H across the cobalt-phosphorus bond of (PPP)CoPMe (3) is demonstrated, where PPP is a monoanionic diphosphine pincer ligand with a central N-heterocyclic phosphido (NHP ) donor. The chlorophosphine Co complex (PP P)CoCl (2) can be generated through coordination of the chlorophosphine ligand (PP P, 1) to CoCl . Subsequent reduction of 2 with KC in the presence of PMe generates (PPP)CoPMe (3), in which both the phosphorus and cobalt centers have been reduced. The addition of 1 atm of H to complex 3 cleanly affords (PP P)Co(H)PMe (4), in which H has ultimately been added across the metal-phosphorus bond. Complex 4 was characterized spectroscopically and using computational methods to predict its geometry.
Addition of H 2 across the cobalt-phosphorus bond of (PPP)CoPMe 3 (3)isdemonstrated, where PPP is amonoanionic diphosphine pincer ligand with ac entral N-heterocyclic phosphido (NHP À )d onor.T he chlorophosphine Co II complex (PP Cl P)CoCl 2 (2)c an be generated through coordination of the chlorophosphine ligand (PP Cl P, 1)t oC oCl 2 . Subsequent reduction of 2 with KC 8 in the presence of PMe 3 generates (PPP)CoPMe 3 (3), in whichb oth the phosphorus and cobalt centers have been reduced. The addition of 1atm of H 2 to complex 3 cleanly affords (PP H P)Co(H)PMe 3 (4), in which H 2 has ultimately been added across the metalphosphorus bond. Complex 4 was characterized spectroscopically and using computational methods to predict its geometry.Supportinginformation and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.
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