Ruthenium(II) Complexes of Multidentate Ligands Derived from Di(2-pyridyl)methane
作者:Deanna M. D'Alessandro、F. Richard Keene、Peter J. Steel、Christopher J. Sumby
DOI:10.1071/ch03019
日期:——
Bis(2,2′-bipyridyl)ruthenium complexes of the model ligand di(2-pyridyl)methane (1) and its multidentate derivatives 1,1,2,2-tetra(2-pyridyl)ethane (2), tetra(2-pyridyl)ethene (3), and hexa(2-pyridyl)[3]radialene (4) have been prepared and characterized by NMR, visible absorption spectroscopy, electrochemical measurements, and, in two cases, by X-ray crystallography. Complexes of (2) and (3) exist as conformationally
模型配体二(2-吡啶基)甲烷(1)的双(2,2'-联吡啶基)钌配合物及其多齿衍生物 1,1,2,2-四(2-吡啶基)乙烷(2),四(已经制备了 2-吡啶基乙烯 (3) 和六 (2-吡啶基)[3] radialene (4),并通过 NMR、可见光吸收光谱、电化学测量以及在两种情况下通过 X 射线晶体学对其进行了表征。(2) 和 (3) 的配合物作为构象刚性物质存在,其对称性低于预期。配体 (2) 和 (3) 出人意料地证明对形成双核钌络合物具有抗性。(4) 的两个非对映异构双核配合物 Δ Λ/Λ Δ 和 Δ Δ/Λ Λ (rac) 显示分别锁定在 C1 和 C2 点群对称的构象中。这代表了一个罕见的例子,其中 ΔΛ/Λ Δ-双核复合物的非手性,