Abstract: A nickelalactone with bisnitrogen ligand was synthesized from tmeda, Ni(COD)2and succinic anhydride. Then nickelalatone with bisphosphine ligand was synthesized through ligand exchange method. The impact of ligand on nikelalactone was tested. The synthesized products were characterized by 1H NMR, IR, Xray and 31P NMR. The results showed that the length of carbon chain in bidentate ligand had an effect on nickelalactone. Reactions of bisphosphines (where n=2) resulted in the formation of nickelalatone with bisphosphine ligand. While the homologous phosphines (where n=3,4) gave nickelalactones with didentate ligand.

Key words: Nickelalactone, Didentate ligand, Ligand exchange, Stability, Carbon dioxide

摘要： 利用 N, N, N ' , N ' - 四甲基乙二胺、 双( 1, 5 - 环辛二烯) 镍与丁二酸酐反应合成了双氮配体丙酸镍内酯环, 然后采用配体交换法制备了1, 2 - 双( 二苯基膦) 乙烷镍内酯环, 考察了不同配体对内酯环稳定性的影响。利用核磁共振氢谱、 红外光谱、 X射线衍射和核磁共振磷谱等分析方法对合成产物的结构进行了表征。实验结果表明, 膦配体中碳链的长度( n碳链) 对产物的结构有影响, 当n碳链=2时, 合成的是1, 2 - 双( 二苯基膦) 乙烷镍内酯环; 当n碳链=3或4时, 合成的是具有双配体的有机镍。

关键词: 镍内酯环, 双齿配体, 配体交换, 稳定性, 二氧化碳