Ether Complexes R Grignard reagents:Complexation of O—R H an ether with a Grignard reagent stabilizes the reagent and helps H-C一Mg-X keep it in solution. H RO④ R H Electrophiles:The ethers )B-H nonbonding electrons stabilize the H borane (BH3). BH3·THF Chapter 14 7Chapter 14 7 Ether Complexes • Grignard reagents: Complexation of an ether with a Grignard reagent stabilizes the reagent and helps keep it in solution. • Electrophiles: The ethers nonbonding electrons stabilize the borane (BH3). O B H H H + _ BH3 THF