A Phosphanyl-Phosphagallene that Functions as a Frustrated Lewis Pair.

ABSTRACT: Phosphagallenes (1?a/1?b) featuring double bonds between phosphorus and gallium were synthesized by reaction of (phosphanyl)phosphaketenes with the gallium carbenoid Ga(Nacnac) (Nacnac=HC[C(Me)N(2,6-i-Pr₂ C₆ H₃ )]₂ ). The stability of these species is dependent on the saturation of the phosphanyl moiety. 1?a, which bears an unsaturated phosphanyl ring, rearranges in solution to yield a spirocyclic compound (2) which contains a P=P bond. The saturated variant 1?b is stable even at elevated temperatures. 1?b behaves as a frustrated Lewis pair capable of activation of H₂ and forms a 1:1 adduct with CO₂ .

SUBMITTER: Wilson DWN 

PROVIDER: S-EPMC7693089 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature