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Enthalpy-Controlled Insertion of a "Nonspectator" Tricoordinate Phosphorus Ligand into Group 10 Transition Metal-Carbon Bonds.


ABSTRACT: Insertion of a tricoordinate phosphorus ligand into late metal-carbon bonds is reported. Metalation of a P^P-chelating ligand (L1), composed of a nontrigonal phosphorous (i.e., P(III)) triamide moiety, P(N(o-N(Ar)C6H4)2, tethered by a phenylene linker to a -PiPr2 anchor, with group 10 complexes L2M(Me)Cl (M = Ni, Pd) results in insertion of the nontrigonal phosphorus site into the metal-methyl bond. The stable methylmetallophosphorane compounds thus formed are characterized spectroscopically and crystallographically. Metalation of L1 with (cod)PtII(Me)(Cl) does not lead to a metallophosphorane but rather to the standard bisphosphine chelate (κ2-L1)Pt(Me)(Cl). These divergent reactivities within group 10 are rationalized by reference to periodic variation in M-C bond enthalpies.

SUBMITTER: Hwang SJ 

PROVIDER: S-EPMC7806272 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature

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Enthalpy-Controlled Insertion of a "Nonspectator" Tricoordinate Phosphorus Ligand into Group 10 Transition Metal-Carbon Bonds.

Hwang Seung Jun SJ   Tanushi Akira A   Radosevich Alexander T AT  

Journal of the American Chemical Society 20201211 51


Insertion of a tricoordinate phosphorus ligand into late metal-carbon bonds is reported. Metalation of a P^P-chelating ligand (<b>L1</b>), composed of a nontrigonal phosphorous (i.e., P(III)) triamide moiety, P(N(<i>o</i>-N(Ar)C<sub>6</sub>H<sub>4</sub>)<sub>2</sub>, tethered by a phenylene linker to a -P<i><sup>i</sup></i>Pr<sub>2</sub> anchor, with group 10 complexes L<sub>2</sub>M(Me)Cl (M = Ni, Pd) results in insertion of the nontrigonal phosphorus site into the metal-methyl bond. The stable  ...[more]

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