A nickel bromide complex supported by a non-innocent ferrocene-chelating heteroscorpionate ligand, [(fc(PPh₂)(BH(3,5-Me₂pz)₂)NiBr)] ((fc^P,B)NiBr, fc = 1,1′-ferrocenediyl, pz = pyrazole), was synthesized and characterized. The compound can be readily oxidized according to UV-vis and ¹H NMR spectroscopy. The catalytic activity of the compound's different oxidation states in the polymerization of vinyl monomers was explored. AB and ABA-type block copolymers were made from styrene and p-chlorostyrene, offering an example of orthogonal redox control in radical polymerization.

中文翻译：

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二茂铁螯合杂蝎酸酯配体在镍介导自由基聚合中的应用

由非纯二茂铁螯合杂蝎酸酯配体支持的溴化镍络合物，[(fc(PPh ₂ )(BH(3,5-Me ₂ pz) ₂ )NiBr)] ((fc ^P,B )NiBr, fc =合成并表征了 1,1'-二茂铁，pz = 吡唑）。根据 UV-vis 和¹ H NMR 光谱，该化合物很容易被氧化。探讨了该化合物不同氧化态在乙烯基单体聚合中的催化活性。 AB 和 ABA 型嵌段共聚物由苯乙烯和对氯苯乙烯制成，提供了自由基聚合中正交氧化还原控制的示例。