The grafting of an aminobis(phosphine)–Pd^II complex (PNP–Pd^II) [PdCl₂{(Ph₂P)₂N(CH₂)₃Si(OMe)₃}] (2) on graphene oxide (GO) has been carried out by a condensation reaction between methoxysilane groups of 2 and hydroxyl groups of GO. The composite material was characterized by FTIR spectroscopy , solid‐state ³¹P NMR spectroscopy, SEM, TEM, XPS and ICP‐AES techniques. All these tools support the clean immobilization of compound 2 on GO. The composite material showed high catalytic activity in Suzuki–Miyaura, Ullmann coupling and cyanation reactions. The heterogeneity of the composite was confirmed by a hot filtration test. The immobilized PNP–Pd^II shows comparable activity to its homogeneous analogue 2. The recycling ability of the catalyst was examined for five consecutive runs, which showed little or no reduction in its catalytic efficiency.

中文翻译：

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固定在氧化石墨烯上的氨基双膦-PdII复合物：铃木-Miyaura，Ullmann偶联和氰化反应的高效且可重复使用的催化剂

氨基双（膦）-Pd ^II络合物（PNP-Pd ^II）[PdCl ₂ {（Ph ₂ P）₂ N（CH ₂）₃ Si（OMe）₃ }]（2）的接枝通过在2的甲氧基硅烷基与GO的羟基之间的缩合反应进行。通过FTIR光谱，固态³¹ P NMR光谱，SEM，TEM，XPS和ICP-AES技术对复合材料进行了表征。所有这些工具都支持化合物2的清洁固定在GO上。该复合材料在Suzuki-Miyaura，Ullmann偶联和氰化反应中显示出高催化活性。通过热过滤试验证实了复合材料的不均匀性。固定化的PNP-Pd ^II具有与其同类类似物2相当的活性。在连续五次运行中检查了催化剂的循环能力，显示其催化效率几乎没有或没有下降。