Acridine-based PNP pincer complexes have been previously utilized for several environmentally benign catalytic processes. In light of the recent growth in interest in base-metal catalysis, we report here the synthesis of acridine-PNP pincer complexes of Ni, Co, Fe, and Mn. We also report here the noninnocent redox nature of these complexes that results in the dimerization of pincer complexes by forming a C–C bond at the C9 position of the acridine ring.

中文翻译：

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d啶基3D金属钳形配合物的氧化还原非纯性质和C–C键形成

基于啶的PNP钳形复合物以前已用于多种环境友好的催化过程。鉴于最近对贱金属催化的兴趣不断增长，我们在此报告了Ni，Co，Fe和Mn的a啶-PNP钳形配合物的合成。我们还报告了这些复合物的非纯氧化还原性质，该结构通过在the啶环的C9位置形成CC键，从而使钳状复合物二聚化。