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N‐Heterocyclic Carbene Complexes of Cp*–Aluminum Triflate
European Journal of Inorganic Chemistry ( IF 2.2 ) Pub Date : 2018-05-17 , DOI: 10.1002/ejic.201800205
Chen‐Hao Wang, Ya‐Fan Lin, Hsi‐Ching Tseng, Gene‐Shiang Lee, Shie‐Ming Peng, Ching‐Wen Chiu

To prepare the half‐metallocene complex of aluminum strong σ‐donating NHC ligands were allowed to react with [Cp*Al(OTf)2]2 to afford the corresponding Cp*Al(NHC)(OTf)2 compound (3). The neutral Al complexes turned out to be more acidic than B(C6F5)3 on the Gutmann–Beckett scale and highly reactive towards chloroform, acetonitrile and nitromethane. With the unsaturated IMes ligand, the nitromethane insertion complex occurred via carboalumination of Cp*–Al across the N=O bond was obtained and structurally characterized. Similar addition product could also be observed in the reaction of Cp*Al(IMes)(OTf)2 with CO2.

中文翻译:

Cp *-三氟甲磺酸铝的N-杂环碳化合物

为了制备铝的半茂金属络合物,使强σ供体的NHC配体与[Cp * Al(OTf)2 ] 2反应,得到相应的Cp * Al(NHC)(OTf)2化合物(3)。结果表明,中性的Al络合物在Gutmann–Beckett规模上比B(C 6 F 53更具酸性,并且对氯仿,乙腈和硝基甲烷具有高反应活性。使用不饱和IMes配体,通过Cp * -Al跨N = O键的碳铝化反应生成了硝基甲烷插入配合物,并进行了结构表征。在Cp * Al(IMes)(OTf)2与CO 2的反应中也可以观察到类似的加成产物
更新日期:2018-05-17
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