Stable Organopalladium(II) and Organoruthenium(II) Complexes with Spin-Labeled Phosphine Ligands
作者:Daniel B. Leznoff、Corinne Rancurel、Jean-Pascal Sutter、Steven J. Rettig、Maren Pink、Olivier Kahn
DOI:10.1021/om9905862
日期:1999.11.1
Palladium(II) and ruthenium(II) complexes containing aminoxyl radical-substituted triphenylphosphine ligands are reported. The novel spin-labeled phosphine ligands [(p-(4,4,5,5,-tetramethylimidazolinyl-1-oxyl-3-oxide)phenyl)diphenylphosphine] (1) and [(p-(N-oxyl-tert-butylamino-2-)phenyl)diphenylphosphine] (2) react with PdCl2 to yield trans-Pd[1]2Cl2 and trans-Pd[2]2Cl2 (complexes 3 and 4, respectively)
报道了含有氨氧基取代的三苯基膦配体的钯(II)和钌(II)配合物。新型自旋标记的膦配体[(p-(4,4,5,5,-四甲基咪唑啉基-1-氧基-3-氧化物)苯基)二苯基膦](1)和[(p-(N-氧基叔-丁基氨基-2-甲基)苯基)二苯基膦](2)用的PdCl反应2,得到反式的Pd [ 1 ] 2氯2和反式的Pd [ 2 ] 2氯2(配合物3和4,分别显示交换耦合的EPR光谱。这种贯穿空间的分子内偶联提供了一种确定与Pd(II)中心配位的自由基膦的数量的方法。仅具有一个配位膦的系统显示出典型的配体EPR光谱。膦2种发生反应与[(η 3 -C 3 H ^ 5)的PdCl] 2和[(η 6 - p -cymene)的RuCl 2 ] 2,形成的单核金属膦加合物(η 3 -C 3 H ^ 5)的Pd [ 2 ]氯(5)和(η 6 - p-cymene)Ru [ 2 ] Cl 2(6)。所有配合物表现出宽峰,移位1个1