On the Ambiphilic Reactivity of Geometrically Constrained Phosphorus(III) and Arsenic(III) Compounds: Insights into Their Interaction with Ionic Substrates.

ABSTRACT: The ambiphilic nature of geometrically constrained Group 15 complexes bearing the N,N-bis(3,5-di-tert-butyl-2-phenolate)amide pincer ligand (ONO^3- ) is explored. Despite their differing reactivity towards nucleophilic substrates with polarised element-hydrogen bonds (e.g., NH₃ ), both the phosphorus(III), P(ONO) (1 a), and arsenic(III), As(ONO) (1 b), compounds exhibit similar reactivity towards charged nucleophiles and electrophiles. Reactions of 1 a and 1 b with KOtBu or KNPh₂ afford anionic complexes in which the nucleophilic anion associates with the pnictogen centre ([(tBuO)Pn(ONO)]^- (Pn=P (2 a), As (2 b)) and [(Ph₂ N)Pn(ONO)]^- (Pn=P (3 a), As (3 b)). Compound 2 a can subsequently be reacted with a proton source or benz

SUBMITTER: Robinson TP 

PROVIDER: S-EPMC5095867 | biostudies-literature | 2016 Oct

REPOSITORIES: biostudies-literature