Synthesis and characterization of group 5 imido complexes supported by the 2,6-dichloroaryl β-diketiminato ligand
作者:Michael Nechayev、Benjamin M. Kriegel、Thomas L. Gianetti、Robert G. Bergman、John Arnold
DOI:10.1016/j.ica.2014.07.006
日期:2014.10
Abstract The synthesis of niobium and tantalum imido complexes supported by the bis-N,N-(2,6-dichlorophenyl)-β-diketiminate ligand (BDI Cl ) is reported. Metal chloride complexes (BDI Cl )M(N t Bu)Cl 2 py ( 1 : Nb, 2 : Ta) were obtained in good yield following the treatment of M(N t Bu)Cl 3 py 2 with Li(BDI Cl ). Complexes 1 – 2 were used as precursors for the formation of the dimethylated complexes
摘要报道了双-N,N-(2,6-二氯苯基)-β-二酮基配体(BDI Cl)负载的铌和钽亚胺配合物的合成。在用Li(BDI Cl)处理M(N t Bu)Cl 3 py 2之后,以高收率获得了金属氯化物络合物(BDI Cl)M(N t Bu)Cl 2 py(1:Nb,2:Ta)。 。配合物1-2被用作形成二甲基化配合物(BDI Cl)M(N t Bu)Me 2(3:M = Nb,4:M = Ta)的前体。通过X射线晶体学和可变温度NMR光谱对新型配合物1-4进行了表征。此外,制备了钽二烷基亚氨基配合物(BDI Cl)Ta(N t Bu)Bn 2(5)和(BDI Cl)Ta(N t Bu)(CH 2 SiMe 3)2(6)并进行了NMR表征光谱学。