Bis(phosphinimino)methanide Rare Earth Amides: Synthesis, Structure, and Catalysis of Hydroamination/Cyclization, Hydrosilylation, and Sequential Hydroamination/Hydrosilylation
作者:Marcus Rastätter、Agustino Zulys、Peter W. Roesky
DOI:10.1002/chem.200601510
日期:2007.4.27
A series of yttrium and lanthanide amido complexes [LnN(SiHMe(2))2}2CH(PPh(2)NSiMe(3))2}] (Ln=Y, La, Sm, Ho, Lu) were synthesized by three different pathways. The title compounds can be obtained either from [LnN(SiHMe(2))2}3(thf)2] and [CH(2)(PPh(2)NSiMe(3))2] or from KN(SiHMe(2))2 and [LnCH(PPh(2)NSiMe(3))2}Cl(2)]2, while in a third approach the lanthanum compound was synthesized in a one-pot
一系列钇和镧系酰胺配合物[Ln N(SiHMe(2))2} 2 CH(PPh(2)NSiMe(3))2}](Ln = Y,La,Sm,Ho,Lu)为通过三种不同的途径合成。可以从[Ln N(SiHMe(2))2} 3(thf)2]和[CH(2)(PPh(2)NSiMe(3))2]或KN(SiHMe( 2))2和[Ln CH(PPh(2)NSiMe(3))2} Cl(2)] 2,而在第三种方法中,镧化合物是从K CH( PPh(2)NSiMe(3))2},LaCl3和KN(SiHMe(2))2。所有配合物均已通过单晶X射线衍射表征。新的配合物[Ln N(SiHMe(2))2} 2 CH(PPh(2)NSiMe(3))2}]用作加氢胺化/环化和氢化硅烷化反应的催化剂。观察到反应速率对中心金属离子半径的明显依赖性,显示镧化合物在两个反应中是最活泼的。此外,还研究了两个反应的组合-依次进行的加氢胺化/氢化硅烷化反应。