the hemilabile tertiary phosphino amide o-Ph2PC6H4CH2N(Me)C(O)Et (DPPBA; 1) with the appropiate Rh(I) or Ir(I) precursor complex results in cyclometalation by oxidative addition of the benzylic C−H bond to the metal center. The solution structures of the two synthesized complexes [RhH(PPh3)2(DPPBA)][PF6] (2) and [IrH(1,5-COD)(DPPBA)][BF4] (3) have been unambiguously identified by various NMR spectroscopic
用适当的Rh(I)或Ir(I)前体络合物处理半不稳定的叔膦酰胺邻-Ph 2 PC 6 H 4 CH 2 N(Me)C(O)Et(
DPPBA; 1)会导致环
氧化金属化苄基CH键在
金属中心的加成。两种合成的配合物[RhH(PPh 3)2(
DPPBA)] [PF 6 ](2)和[IrH(1,5-COD)(
DPPBA)] [BF 4 ](3)的溶液结构是明确的通过各种NMR光谱技术鉴定。另外,对2的单晶X射线衍射进行了研究。和3。这些是用
DPPBA作为
配体获得的第一个晶体结构,最终证实了1在
铂族
金属络合物中三螯合物的能力。