The C(carbene)N(amino)N(amine)-pincer nickel(II) bromides 1a–c were hydrogenated to the corresponding nickel(II) hydrides 2a–c by (EtO)₃SiH/NaO^tBu or NaBH₄. These nickel(II) hydrides 2a–c were characterized by NMR and IR spectroscopy as well as X-ray diffraction. The catalytic performance of complex 2b for hydrodehalogenation reactions was explored. With a combination of 3 mol % catalyst loading, (EtO)₃SiH/NaO^tBu/toluene/80 °C and different reaction times, organic halides were successfully reduced to the related alkanes. A catalytic radical mechanism is proposed and partially verified by experiments.

中文翻译：

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NHC钳制氢镍配合物的合成及其在加氢脱卤中的催化应用

通过（EtO）₃ SiH / NaO ^t Bu或NaBH ₄将C（卡宾）N（氨基）N（胺）-溴化镍（II）溴化物1a - c氢化为相应的氢化镍（II）氢化物2a - c。这些氢化镍（II）2a – c通过NMR和IR光谱以及X射线衍射进行了表征。探索了配合物2b对加氢脱卤反应的催化性能。结合3摩尔％的催化剂负载量（EtO）₃ SiH / NaO ^t在Bu /甲苯/ 80°C和不同的反应时间下，有机卤化物被成功还原为相关的烷烃。提出了一种催化自由基的机理，并通过实验进行了部分验证。