BePhX1.91.9-0.3THFBePhX vs. Keywords: beryllium; Grignard compounds; ligand exchange; organometallics; Schlenk equilibrium EN beryllium Grignard compounds ligand exchange organometallics Schlenk equilibrium 1 13 13 10/31/23 20231026 NES 231026 B The reaction of homoleptic beryllium halide b with diphenyl beryllium complexes leads to the clean formation of heteroleptic beryllium I Grignard i compounds [(L) SB 1-2 sb BePh I X i ] SB 1-2 sb ( I X i =Cl, Br, I; L= I C i -, I N i -, I O i -donor ligand). BePhX7.12.91.7NEt3BePhX vs.