Syntheses, crystal structures and properties of two new ion-pair complexes by self-assembly of bis(maleonitriledithiolate)copper(II)/nickel(III) anion and substituted 4-dimetylaminopyridinium
- 作者：Ya-Lan Hu ; Jing-Hua Lin ; Song Han ; Wei-Qiang Chen ; Lin-Liang Yu ; Dong-Dong Zhou ; Wen-Tao Yin ; Hong-Rong Zuo ; Jia-Rong Zhou ; scauchem534@126.com ; Le-Min Yang ; Chun-Lin Ni ; niclchem@scau.edu.cn
- 关键词：Maleonitriledithiolate ; Copper ; Nickel ; Substituted 4-dimethyl-aminopyridinium ; Crystal structure ; Magnetic properties
- 刊名：Synthetic Metals
- 出版年：2012
- 期刊代码：77_03796779
- 类别：ph
- 出版时间：July, 2012
- 卷：162
- 期：11-12
- 页码：1024-1029
- 文件大小：959 K
摘要
Two new ion-pair complexes, [ClBrBzPyN(CH3)2]2[Cu(mnt)2](1) and [ClBrBzPyN(CH3)2][Ni(mnt)2](2) have been obtained by self-assembly of the [M(mnt)2]x鈭?/sup> (M = Cu(II) or Ni(III), mnt2鈭?/sup> = maleonitriledithiolate, x = 1 or 2) anion and [ClBrBzPyN(CH3)2]+ ([ClBrBzPyN(CH3)2]+ = [1-(4鈥?chloro-2鈥?bromobenzyl)-4-dimethylaminopyridinium]) cation. The cations in 1 stack into a column through the CH鈰疊r hydrogen bonds and the 蟺鈰€ stacking interactions, while the [Cu(mnt)2]2鈭?/sup> (A) and the cations (C) stack alternately into a 1D column (i.e., of type 鈰疌CACCACC鈰?. The anions and the cations in 2 stack into segregated columns in which the Ni(III) ions form a uniform 1D zigzag magnetic chain. Magnetic susceptibility measurements in the temperature range 2-300 K show that 1 exhibits an antiferromagnetic coupling feature with 胃 = 鈭?5.3 K, while 2 shows characteristic of spin-gap (螖/kb = 1044.3 K) around 114 K.