Lithium phosphoranylidene carbenoids Mes*-P(=E)=C(X)Li(THF)3 (E = NMes*, C(SiMe3)2; X = Br, Cl, F): synthesis and structural investigations in solution and solid state

Research was conducted to examine the synthesis of phosphoranylidene carbenoids Mes*-P(=E)=C(X)Li(THF)3 (E = NMes*, C(SiMe3)2; X = Br, Cl, F) and to characterize their molecular structures using low-temperature X-ray diffractometry and multinuclear NMR studies. Results confirm the presence of moomeric molecules with THF-solvated metal atoms in both solution and solid state. NMR studies demonstrate that the dynamic exchange between the two components in solution can be directly monitored in 2D 6Li, 31P shift correlations.