Ni(II) and Cu(II) Complexes of Pyridyl-Pyrazole Ligands: Syntheses, Crystal Structures and Influence of Metal Ion
摘要:
在水热条件下,通过 HL 和 NaN3 与 NiCl2-6H2O 和 CuCl2-2H2O 反应,制备了配体 3-(2-吡啶基)吡唑-1-基乙酸(HL),并合成了[Ni(L)(N3)] n 和[Cu(L')2(H2O)2] n [HL' = 3-(2-吡啶基)吡唑] 复合物。单晶 X 射线衍射分析表明,[Ni(L)(N3)] n 具有一维无限链结构,并通过π---π弱相互作用进一步形成二维超分子框架;[Cu(L')2(H2O)2] n 通过π---π弱相互作用连接形成一维链,然后通过弱 C-H-O 相互作用形成二维超分子结构。
The asymmetric synthesis of both (R)-and (S)-arundic acid has been achieved via the key step of a stereoselective alkylation reaction using non-cross-linkedpolystyrene (NCPS) supported (4R)- and (4S)-2-phenylimino-2-oxazolidine as chiralauxiliaries. This method is efficient (both enantiomers were obtained in 99% ee and 60% overall yield) and the chiralauxiliaries can be recovered quantitatively