Mono- and binuclear complexes of rhodium involving a new series of hemilabile o-phosphinoaniline ligands
作者:Lindsay J. Hounjet、Matthias Bierenstiel、Michael J. Ferguson、Robert McDonald、Martin Cowie
DOI:10.1039/b822170g
日期:——
and/or bridging P,N-ligands within mono- and binuclear rhodium(i) complexes, respectively. The previously prepared phosphines, Ph(x)PAr'(3-x) (x = 0, 1 or 2, Ar' = o-N,N-dimethylanilinyl) and Ar'(2)PCH(2)PAr'(2) (dmapm), have also been used to prepare analogous mono- and binuclear complexes. Variable temperature (1)H NMR spectroscopy of the mononuclear complexes, [RhCl(CO)(L)] (L = PhPAr(2), PhPAr'(2),
Ph(x)PAr(3-x)类型的单膦(x = 0、1或2,Ar = oN-甲基苯胺基)和二膦Ar(2)PCH(2)PAr(2)(mapm)合成用作螯合和/或桥接单核和双核铑(i)配合物中的P,N-配体。先前制备的膦Ph(x)PAr'(3-x)(x = 0、1或2,Ar'= oN,N-二甲基苯胺基)和Ar'(2)PCH(2)PAr'(2)( dmapm),也已用于制备类似的单核和双核复合物。单核络合物[RhCl(CO)(L)](L = PhPAr(2),PhPAr'(2),PAr(3)和PAr'(3))和线的可变温度(1)H NMR光谱所得光谱的形状分析表明,相对于相关的单甲基苯胺基,N,N-二甲基苯胺基供体的不稳定性显着增加。单核络合物的X射线结构分析表明,与它们的单甲基类似物相比,二甲基苯胺基络合物的II型半透性增强是由于涉及配位的二甲基苯胺基取代基的空间相互作用增加。在双核,dmapm