作者:T. Mathur、J. Dinda、P. Datta、G. Mostafa、T.-H. Lu、C. Sinha
DOI:10.1016/j.poly.2006.02.018
日期:2006.9
azole (3′-PyaiH) or its 1-alkyl derivative, 3′-PyaiR, with Ru(CO)3(PPh3)2 has synthesized air stable, moisture insensitive, diamagnetic Ru(0) complexes, [Ru(CO)(3′-PyaiR)(PPh3)2]. The ligands serve as an unsymmetric N,N′-chelating agent (N(imidazole) and N(azo) are abbreviated as N and N′, respectively). The X-ray structure determination of [Ru(CO)(3′-PyaiH)(PPh3)2] shows a square pyramidal geometry
2-(3'-吡啶基偶氮)咪唑(3'-PyaiH)或其1-烷基衍生物3'-PyaiR与Ru(CO)3(PPh 3)2的反应合成了对空气稳定,对湿气不敏感,抗磁性的Ru(0)络合物,[Ru(CO)(3'-PyaiR)(PPh 3)2 ]。所述配体用作不对称的N,N′-螯合剂(N(咪唑)和N(偶氮)分别缩写为N和N′)。[Ru(CO)(3'-PyaiH)(PPh 3)2 ]的X射线结构测定显示出方形的金字塔几何形状。正方形平面由Ru,2P,C(O),N(1)组成,顶点处有N(3)。其他光谱学研究(IR,UV-Vis,NMR)也支持立体化学。电化学显示三个连续的阳极峰(Epa)并提出Ru(I)/ Ru(0),Ru(II)/ Ru(I),Ru(III)/ Ru(II)和偶氮还原的不可逆氧化还原反应。[Ru(CO)(3'-PyaiR)(PPh 3)2 ]的Cl 2氧化已分离出Ru(II)-络合物,为高