We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Contrasting E−H Bond Activation Pathways of a Phosphanyl‐Phosphagallene.
- Authors
Feld, Joey; Wilson, Daniel W. N.; Goicoechea, Jose M.
- Abstract
The reactivity of the phosphanyl‐phosphagallene, [H2C{N(Dipp)}]2PP=Ga(Nacnac) (Nacnac=HC[C(Me)N(Dipp)]2; Dipp=2,6‐iPr2C6H3) towards a series of reagents possessing E−H bonds (primary amines, ammonia, water, phenylacetylene, phenylphosphine, and phenylsilane) is reported. Two contrasting reaction pathways are observed, determined by the polarity of the E−H bonds of the substrates. In the case of protic reagents (δ−E−Hδ+), a frustrated Lewis pair type of mechanism is operational at room temperature, in which the gallium metal centre acts as a Lewis acid and the pendant phosphanyl moiety deprotonates the substrates. Interestingly, at elevated temperatures both NH2iPr and ammonia can react via a second, higher energy, pathway resulting in the hydroamination of the Ga=P bond. By contrast, with hydridic reagents (δ+E−Hδ−), such as phenylsilane, hydroelementation of the Ga=P bond is exclusively observed, in line with the polarisation of the Si−H and Ga=P bonds.
- Subjects
LEWIS pairs (Chemistry); LEWIS acids; HIGH temperatures; ETHYNYL benzene; HYDROAMINATION; GALLIUM nitride films
- Publication
Angewandte Chemie, 2021, Vol 133, Issue 40, p22228
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.202109334