项目名称: 稀土膦卡宾配合物的合成及反应性能研究
项目编号: No.20872164
项目类型: 面上项目
立项/批准年度: 2009
项目学科: 金属学与金属工艺
项目作者: 陈耀峰
作者单位: 中国科学院上海有机化学研究所
项目金额: 34万元
中文摘要: 通过硅基转移反应合成了稀土钕桥联膦卡宾碘化物,并对其分子结构进行了表征。以稀土钕桥联膦卡宾碘化物为前体,利用稀土钕-碘键的转化合成得到了其它两个新稀土钕桥联膦卡宾配合物。合成得到了一个以P3-离子为核、五个稀土金属Y为结点和四个膦卡宾基团为桥联的新奇配合物,这是第一个P3-离子被稀土金属离子稳定的配合物。该配合物可以与一些有机配体的碱金属盐反应,合成新配合物种。稀土桥联膦卡宾配合物具有很好的反应性能,可以与一氧化碳、二氧化碳、二苯甲酮、苯基氰,异氰酸酯和碳化二亚胺等反应。
中文关键词: 稀土配合物;膦卡宾;合成;反应性能
英文摘要: A neodymium bridged phosphinidene iodide was synthesized through a silyl group redistribution reaction. The structure of the complex was characterized by X-ray diffraction study. Two new neodymium bridged phosphinidene complexes were prepared via metathesis reaction by using the neodymium bridged phosphinidene iodide as the synthetic precursor. The first P3- containing rare-earth metal complex was synthesized and structurally characterized. The complex has some remarkable structural features: one P3- sits in the middle of the cage, five Y3+ centers occupy the vertices of a square pyramid while the four μ[PR]2- ligands cap the side faces of this pyramid. This complex can be transferred into other new complexes via metathesis reaction. The rare-earth metal bridged phosphinidene complexes show good reactivities towards CO, CO2, benzophenone, benzonitrile, isocyanide and carbodiimide.
英文关键词: Rare-earth metal complex; Phosphinidene; Synthesis; Reactivity