Kureja Kunal, Zinke Julian, Bruhn Clemens, Siemeling Ulrich
Institute of Chemistry, University of Kassel, Heinrich-Plett-Str. 40, 34132 Kassel, Germany.
Chem Commun (Camb). 2019 Aug 21;55(65):9705-9708. doi: 10.1039/c9cc05283f. Epub 2019 Jul 29.
Imidazolium-benzimidazolates are readily available conjugated mesomeric betaines, whose carbenic tautomers can form C,N-metal chelates containing amino-functionalised normal or abnormal NHC ligands, depending on the degree of steric congestion. Deprotonation of the amino moiety gives rise to imine-functionalised C,N-metal chelates, whose N atom can be easily utilised for the construction of heteronuclear complexes.
咪唑鎓 - 苯并咪唑盐是易于获得的共轭内盐，其卡宾互变异构体可形成含氨基官能化的正常或异常NHC配体的C，N - 金属螯合物，这取决于空间拥挤程度。氨基部分的去质子化产生亚胺官能化的C，N - 金属螯合物，其N原子可容易地用于构建异核配合物。
