Coordination chemistry of two new tetraaza Ni(II) and Cu(II) macrocyclic and two new Co(II) and Zn(II) macroacyclic Schiff base complexes containing piperazine moiety: X-ray crystal structures of Ni(II) and Zn(II) complexes
作者:Hassan Keypour、Parisa Arzhangi、Nasibeh Rahpeyma、Majid Rezaeivala、Yalcin Elerman、Hamid Reza Khavasi
DOI:10.1016/j.ica.2010.11.033
日期:2011.2
equilibrium reaction in the presence of cobalt(II) and zinc(II) metal ions with ligand L in a 1:1 molar ratio yielded the open-chain Schiff base complexes, [CoL′](ClO4)2 (3) and [ZnL′](ClO4)2 (4) containing two terminal primary amino groups. The ligand L′ is 1,4-bis(2-(2-aminoethyliminomethyl)phenyl)piperazine. The crystal structures of (1) and (4) have been also determined by X-ray diffraction. It was shown
摘要一种新的潜在的四齿(N4)Schiff碱配体(L),1,9,12,20-四氮杂四环[18.2.2.02,7.014,19] tetracosa-2(7),3,5,8,12,14( 19),描述了含有哌嗪部分的15,17-辛烯。大环席夫碱配合物[NiL](ClO4)2(1)和[CuL](ClO4)2(2)由等摩尔量的配体(L)与镍(II)和铜(II)金属离子制得。尽管在钴(II)和锌(II)金属离子与配体L(摩尔比为1:1)的存在下进行平衡反应,得到的是开链席夫碱配合物,[CoL'](ClO4)2(3)和含有两个末端伯氨基的[ZnL'](ClO4)2(4)。配体L'为1,4-双(2-(2-(2-氨基乙基亚氨基甲基)苯基)哌嗪。(1)和(4)的晶体结构也已经通过X射线衍射确定。结果表明,Ni(II)通过哌嗪基团的两个氮原子和亚胺基团的两个氮原子与配体L配位,呈稍微扭曲的方平面几何形状。(4