Synthesis and Coordination Ability of a Donor-Stabilised Bis-Phosphinidene.

ABSTRACT: Chelating phosphines have long been a mainstay as efficient directing ligands in transition-metal catalysis. Low-valent derivatives, namely chelating phosphinidenes, are to date unknown, and could lead to chelating complexes containing more than one metal centre due to the intrisic capacity of phosphinidenes to bind two metal fragments at one P-centre. Here we describe the synthesis of the first such chelating bis-phosphinidene ligand, XantP₂ (2), generated by the reduction of a diphosphino xanthene derivative, Xant(PH₂ )₂ (1) with ^iPr NHC (^iPr NHC=[:C{N(iPr)C(H)}₂ ]). Initial studies have shown that this novel chelating ligand can act as a bidentate ligand towards element dihalides (i.e. FeCl₂ , ZnI₂ ,

SUBMITTER: Hadlington TJ 

PROVIDER: S-EPMC7898926 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature