Selective complexation of 3d metal(<scp>ii</scp>) ions with multidentate and chiral isomers derived from condensation of 2-pyridinecarboxaldehyde with triethylenetetramine
作者:Yong-Min Lee、Eun-Sook Kim、Hee-Jin Kim、Hee Jung Choi、Young-Inn Kim、Sung Kwon Kang、Sung-Nak Choi
DOI:10.1039/b815621b
日期:——
3d metal(II) salts, Mn(SCN)(2), MnCl(2), CuBr(2), MnI(2) and ZnBr(2), react selectively with L(1) or L(2) in this mixture solution to produce Mn(L(2))(NCS)(2) 1, Mn(L(2))Cl(2) 2, [Cu(L(2))Br]Br x H(2)O 3, [Mn(L(1))]I(2) 4, and [Zn(L(1))][ZnBr(4)] 5 , respectively. The presence of the two imidazolidine rings in the coordinated ligand L(2) of 1-2 generates two chiral carbon centers. The Mn(II) ion coordinates
2-吡啶甲醛与化学计量的三亚乙基四胺在异丙醇中的缩合产生至少两种产物的混合物:席夫二碱L(1)和具有两个咪唑烷环L(2)的环化产物,可能还有席夫一元碱与一个咪唑烷环L(3)。3d金属(II)盐Mn(SCN)(2),MnCl(2),CuBr(2),MnI(2)和ZnBr(2)在此选择性地与L(1)或L(2)反应生成Mn(L(2))(NCS)(2)1,Mn(L(2))Cl(2)2,[[Cu(L(2))Br] Br x H(2)O 3的混合溶液,[Mn(L(1))I(2)4和[Zn(L(1))] [ZnBr(4)] 5。在1-2的配体L(2)的两个咪唑烷环的存在会生成两个手性碳中心。Mn(II)离子在六配位Mn(II)化合物1和2中立体选择性地配位为L(2)的[R,R]或[S,S]形式。