Polynuclear copper(II) complexes with hexadentate Schiff base directed by the counter ion. Syntheses, crystal structures and magnetic properties
作者:Ildiko Buta、Liliana Cseh、Carmen Cretu、Diana Aparaschivei、Catalin Maxim、Peter Lönnecke、Evamarie Hey-Hawkins、Nicolae Stanica、Eva Ohler、Eva Rentschler、Marius Andruh、Otilia Costisor
DOI:10.1016/j.ica.2017.10.024
日期:2018.4
Four new complexes, [Cu 9 L 6 ( µ 3 -ClO 4 ) 2 ](ClO 4 ) 4 ·4CHCl 3 1 , [Cu 3 L 2 (H 2 O) 2 ](ClO 4 ) 2 ·3H 2 O 2 , [Cu 6 L 4 (N 3 ) 2 ](ClO 4 ) 2 3 and [Cu 2 L(CH 3 COO) 2 ] 4 , where H 2 L stands for the Schiff base N , N ′-bis[(2-hydroxybenzilideneamino)-propyl]-piperazine, were obtained and structurally characterized. Compounds 1 , 2 and 3 contain the Cu 3 L 2 2+ entities in which L 2− acts in an
摘要四种新的配合物[Cu 9 L 6(µ 3 -ClO 4)2](ClO 4)4·4CHCl 3 1,[Cu 3 L 2(H 2 O)2](ClO 4)2·3H 2 O 2,[Cu 6 L 4(N 3)2](ClO 4)2 3和[Cu 2 L(CH 3 COO)2] 4,其中H 2 L代表席夫碱N,N′-bis [(得到2-羟基苯并亚苄基氨基)-丙基]-哌嗪,并对其结构进行了表征。化合物1、2和3包含Cu 3 L 2 2+实体,其中L 2−以不对称模式起作用,N 3 O供体组包裹在边缘铜(II)上,其余NO组结合在中心铜离子上。边缘的铜(II)离子处于扭曲的方形锥体环境中,而中心的铜离子处于正方形平面。在图1中,外围铜(II)离子(Cu1)的线性轴是穿过中心Cu2的两倍,并且Cu1⋯Cu2和Cu2⋯Cu1'的距离为6.755A。线性三核单元被稀有的µ 3 -1,2,3高氯酸盐配体桥接,从而描述了2D网络。在[Cu