The Front Cover shows that nickel complexes of new PNN pincer ligands are excellent catalysts for the hydrodehalogenation of aryl halides (bromonaphthalene being shown here) when using NaBH₄ as base and hydride source. The potency of the catalysts is enhanced by incorporating an electron‐donating group at a para‐aryl position of the diarylamido anchor, which becomes evident in comparative studies with less receptive aryl halide substrates. More information can be found in the Full Paper by D. Wang and J. R. Gardinier.

中文翻译：

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封面：Ni（PNN）钳式配合物的电子性质调节催化加氢脱卤反应的活性（Eur。J. Inorg。Chem。47/2020）

封面显示，当使用NaBH ₄作为碱和氢化物源时，新型PNN钳形配体的镍配合物是芳基卤化物（此处显示溴萘）加氢脱卤的极佳催化剂。通过在二芳基酰胺锚的对芳基位置上结合一个供电子基团，可以增强催化剂的效力，这在接受性较低的芳基卤化物底物的比较研究中变得很明显。更多信息可以在D. Wang和J. R. Gardinier撰写的全文中找到。