Incorporation of non-planar chelating ligands in the coordination sphere of ruthenium(II) complexes
作者:Rosario Scopelliti、Giuseppe Bruno、Caterina Donato、Giuseppe Tresoldi
DOI:10.1016/s0020-1693(00)00343-1
日期:2001.2
dissociation occurs and [Ru(N,N-dps)2(solvent)2]2+ and free ligand are present. In order to understand this dynamic behaviour, a synthetic methodology to obtain other octahedral [Ru(N,N-diimmine)2(N,S-L′)][PF6]2 and [Ru(dps)2(N,S-T)][PF6] complexes has been developed (N,N-diimmine=dps, dipyrimidin-2-yl sulfide (dprs), 2,2′-bipyridine (bipy); N,S-L′=phenyl pyridyl sulfide (phpys); N,S-T=2-mercaptopyridinate
摘要Ru(N,N-dps)2Cl2与L [L = di-2-吡啶基硫化物(dps)和2-(6-甲基吡啶基)2-吡啶基硫化物(mdps) dps)2(N,SL)] [PF6] 2,其中L以[Ru(N,N-dps)2(N,S-dps)的晶体结构显示]] [PF6] 2·H2O(1)。Ru原子表现出扭曲的八面体几何形状,涉及五个N原子和一个S原子。N = S-配体的四元螯合环和配位的吡啶环共面,而吡啶侧基旋转113.9(2)°。除悬环外,N,S配位还会产生硫手性中心。变温1H和13C NMR光谱显示了络合物的流动性。在所有温度下的丙酮中,光谱与分子内过程的存在一致,而在高于300 K的乙腈中会发生解离,并且存在[Ru(N,N-dps)2(solvent)2] 2+和游离配体。为了理解这种动态行为,需要一种合成方法来获得其他八面体[Ru(N,N-diimmine)2(N,SL')] [PF6] 2和[Ru(dps)2(N,ST)]