structure was also elucidated using X‐ray diffractometry. Unlike Zn(II)–NHC alkoxide species 1 and 2, which contain a NHC flanked with an additional N‐functional group (i.e. thioether and ether, respectively), the Zn(II) alkoxide species 5 incorporates a monodentate NHC ligand. The Zn(II) complexes 1, 2 and 5 were tested in the ring‐opening polymerization (ROP) of trimethylene carbonate (TMC). All three
四种新型
锌NHC烷基/醇盐/
氯化物复合物(4,5,9和9' )被容易地制备和完全表征,包括X-射线衍射晶体学为5和9' 。的反应Ñ甲基Ñ '丁基
咪唑鎓
氯化物(3.HCl)与ZnEt 2,得到相应的[((2当量)Ç NHC)的ZnCl(ET)]配合物(4)通过质子分解反应,如推定的根据NMR数据 用BnOH醇解4导致定量形成双核Zn(II)醇盐物种[[ CX射线衍射分析证实了NHC)ZnCl(OBn)] 2(5)。NMR数据与在室温下在溶液中保留其二聚体结构的物质5一致。N-(2,6-二异丙基苯基)-N'-乙基甲基醚
咪唑氯化物(8.HCl)与ZnEt 2(2当量)的质子分解反应产生了[[ C NHC)ZnCl(Et)]物种9。发现后者与溶液中的CH 2 Cl 2具有反应性,并干净地转化为相应的二
氯化锌(II)[[ C NHC)ZnCl 2] 2(9'),其分子结构也通过X射线衍射法得以阐明。