The reactions of phosphorus(III) halides with β-diketiminato ligands

Reactions of the lithium or sodium salt, [HC(CMeNDipp)2]M (Dipp = 2,6-diisopropylbenzene, M = Li or Na), with PBr3 or PCl3 affords a series of phosphenium cations that were characterized in the solid state by X-ray crystallography. Solid-state analysis reveals that for compounds 1 and 2, C–H activation of the ligand occurs and the phosphorus is bound to a nitrogen and carbon atom of the ligand. Compound 3 exhibits the more traditional nitrogen chelation of the ligand to the phosphorus atom.

Graphical abstractReactions of the lithium or sodium salt, [HC(CMeNDipp)2]M (Dipp = 2,6-diisopropylbenzene, M = Li or Na), with PBr3 or PCl3 affords a series of phosphenium cations that were characterized in the solid state by X-ray crystallography. Solid-state analysis reveals that for compounds 1 and 2, C–H activation of the ligand occurs and the phosphorus is bound to a nitrogen and carbon atom of the ligand. Compound 3 exhibits the more traditional nitrogen chelation of the ligand to the phosphorus atom.Figure optionsDownload full-size imageDownload as PowerPoint slide