Tuning Ruthenium Carbene Complexes for Selective P-H Activation through Metal-Ligand Cooperation.

ABSTRACT: The use of iminophosphoryl-tethered ruthenium carbene complexes to activate secondary phosphine P-H bonds is reported. Complexes of type [(p-cymene)-RuC(SO₂ Ph)(PPh₂ NR)] (with R = SiMe₃ or 4-C₆ H₄ -NO₂ ) were found to exhibit different reactivities depending on the electronics of the applied phosphine and the substituent at the iminophosphoryl moiety. Hence, the electron-rich silyl-substituted complex undergoes cyclometallation or shift of the imine moiety after cooperative activation of the P-H bond across the M=C linkage, depending on the electronics of the applied phosphine. Deuteration experiments and computational studies proved that cyclometallation is initiated by the activation process at the M=C bond and triggered

SUBMITTER: Feichtner KS 

PROVIDER: S-EPMC9299219 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature