trigonal-planar geometries at cobalt in the solid state. The solid-state structure of 3 also contains a trigonal-planar cobalt center and exhibits close Co---H contacts involving the methine hydrogen atoms of the NH(DIPP) groups in the axial positions. The solid-state structure of 5 features an interaction between cobalt and a flanking aryl group of the anilide ligand, resulting in pyramidalization of the
三配位
钴物种IPrCoCl N(SiMe 3)2 } [ 1 ; 通过IPrCoCl 2 } 2与NaN(SiMe 3)2反应合成IPr = 1,3-双(2,6-
二异丙基苯基)
咪唑啉-2-亚烷基。化合物1是用于低配位(IPr)Co物种的有用原料。1分发生反应用2,6-二-叔经由CO-N键的
氨解-丁基-4-甲基
苯酚(
BHT-H),以生成三维坐标
酚络合物,IPrCoCl(O-2,6-吨卜2 - 4-MeC 6 H 2)(2)。的反应1与
2,6-二异丙基苯胺(NH 2 D
IPP)一起生成IPrCoCl(NHD
IPP)(4),其经历歧化以形成4,IPrCoCl 2 } 2和IPrCo(NHD
IPP)2(3)的混合物。1与Li [NH(D
IPP)]的反应形成相同的产物混合物,该反应出乎意料地通过酰胺交换进行。通过IPrCoCl 2 } 2与4当量的Li [NH(D
IPP)]反应,可独立合成化合物3。反应1体积更大的2