The First Carbene Complex of a Diorganoberyllium: Synthesis and Structural Characterization of Ph₂Be(<i>i</i>-Pr-carbene) and Ph₂Be(<i>n</i>-Bu₂O)

The reaction of base-free Ph2Be with 1,3-di-isopropyl-4,5-dimethylimidazol-2-ylidene (i-Pr-carbene) in toluene gave the carbene adduct Ph2Be(i-Pr-carbene) (1) as colorless crystal blocks. For comparison, the di-n-butyl ether adduct Ph2Be(n-Bu2O) (2) was prepared from BeCl2 and PhLi in a mixture of Et2O and n-Bu2O. Single-crystal X-ray determinations reveal monomeric solid-state structures for both complexes.无碱二苯基铍（Ph₂Be）与1,3-二异丙基-4,5-二甲基咪唑-2-叶立德（i-Pr-卡宾（carbene））在甲苯溶剂中反应，得到卡宾加合物Ph₂Be(i-Pr-carbene)（化合物1），产物为无色块状晶体。 为开展对照实验，以氯化铍（BeCl₂）与苯基锂（PhLi）在二乙基醚（Et₂O）与二正丁基醚（n-Bu₂O）的混合溶剂中反应，制备得到二正丁基醚加合物Ph₂Be(n-Bu₂O)（化合物2）。 单晶X射线衍射测定结果显示，两种配合物均为单体固态结构。