Synthesis, characterization and crystal structure of [Ru(tppz)(4,4′-(CH3)2bpy)Cl](PF6), (tppz = 2,3,5,6-tetrakis(2-pyridyl)pyrazine)
作者:Valeria Tondreau、Ana Maria Leiva、Barbara Loeb、Daphne Boys、Laura K. Stultz、Thomas J. Meyer
DOI:10.1016/0277-5387(95)00448-3
日期:1996.6
Abstract The synthesis and characterization of the complex [Ru(tppz)(4,4′-(CH 3 ) 2 bpy)Cl] + , where tppz = 2,3,5,6-tetrakis(2-pyridyl)pyrazine, is reported. The ion was obtained in a one pot synthesis by reduction of Ru(4,4′-(CH 3 ) 2 bpy)Cl 4 with triethylamine in the presence of tppz, and isolated as the hexafluorophosphate salt. The structure of [Ru(tppz)(4,4′-(CH 3 ) 2 bpy)Cl](PF 6 ), 1 , was
摘要络合物[Ru(tppz)(4,4'-(CH 3)2 bpy)Cl] +的合成与表征,其中tppz = 2,3,5,6-四(2-吡啶基)吡嗪报告。通过在tppz存在下用三乙胺还原Ru(4,4'-(CH 3)2 bpy)Cl 4来在一锅合成中获得离子,并将其分离为六氟磷酸盐。通过X射线衍射确定了[Ru(tppz)(4,4'-(CH 3)2 bpy)Cl](PF 6)1的结构。钌原子处于高度扭曲的八面体环境中,具有4,4'-(CH 3)2 bpy氮,tppz的吡嗪中心氮和氯定义最佳平均赤道面。轴向位置被tppz的配位吡啶基环的氮占据。与中心环相连的Ru-N(tppz)键较短[1.962(9)A],而Ru-N(4,反式的4'(CH 3)2 bpy)键朝单键距离[2.096(10)A]延伸。这会加剧八面体的配位畸变,这主要是由tppz的咬合角引起的。在1 H-NMR光谱中,相对于配体的特征共振在场上和场下的位移是明显的1中的畸变。