Palladium(II)/β-diketonate complexes containing the enolates of N-acetyl-3-acyltetramic acids
作者:Efstathios Gavrielatos、Giorgos Athanasellis、Brian T Heaton、Alexander Steiner、Jamie F Bickley、Olga Igglessi-Markopoulou、John Markopoulos
DOI:10.1016/s0020-1693(03)00196-8
日期:2003.7
are usually two isomers of [Pd(η2-L)2] which are probably due to the presence of cis- and trans-isomers of the complex as a result of both the enolate ligands adopting a O,O′-mode of coordination via the functionalities associated with C4 and the acyl group at C3 in the pyrrolidine ring. In pyridine solution, [Pd(η2-abta)2] forms a Lewis base adduct, [Pd(py)4](abta)2, which has been characterised by X-ray
从ACAC的渐进位移[钯(ACAC)2 ]发生在具有不同特特拉姆酸(HL =畑Habta)反应,得到[钯(ACAC)(η 2 -L)]和[钯(η 2 -L)2 ]但是,当HL = Haceta,只有[钯(ACAC)(η 2形成-L)],即使当的Pd-HL的比为1:4; 所有这些特特拉姆酸与K的水溶液反应2 [的PdCl 4 ]给出[钯(η 2 -L)2 ]。在溶液中,在非极性溶剂中的NMR研究显示,存在的[将Pd(ACAC)(η只有一个异构体2 -L)],而通常存在的[钯两种异构体(η 2 -L)2]可能是由于该烯醇盐配体通过与C 4和C 3处的酰基相关的官能团采用O,O'-配位方式进行配位而导致复合物中存在顺式和反式异构体在吡咯烷环上。在吡啶溶液中,[加入Pd(η 2 -abta)2 ]形成的路易斯碱加合物,[钯(PY)4 ](ABTA)2,其已经通过X射线分析和显示含有一个正方形平面的Pd