Ligand-directed assembly of trinuclear and one-dimensional heterotrimetallic Cu(II)Ln(III)Fe(III) complexes: unusual antiferromagnetic (CuFeIII)-Fe-II coupling via cyano bridges
文献类型：期刊论文
| 作者 | Liu, Mei-Jiao1; Hu, Kong-Qiu1; Liu, Cai-Ming2; Cui, Ai-Li1; Kou, Hui-Zhong1 |
| 刊名 | NEW JOURNAL OF CHEMISTRY
 |
| 出版日期 | 2016 |
| 卷号 | 40期号:10页码:8643-8649 |
| 英文摘要 | New heterotrimetallic complexes [Cu(valpn)(H2O)Ln(H2O)(3)Fe(CN)(6)]center dot xH(2)O (Ln = Gd, x = 3 for complex 1; Ln = Tb, x = 3 for complex 2; Ln = Dy, x = 1.75 for complex 3; H(2)valpn = N,N'-bis(3-methoxysalicylidene)-1,3-diaminopropane), {[Cu(Me(2)valpn)](2)Ln(H2O)Fe(CN)(6)center dot xH(2)O center dot yCH(3)CN}(n) (Ln = Gd, x = 5, y = 2.5 for complex 4; Ln = Tb, x = 4.5, y = 1.5 for complex 5; Ln = Dy, x = 5.5, y = 2.5 for complex 6; Ln = Y, x = 6, y = 4 for complex 7; H(2)Me(2)valpn = N,N'-bis(3-methoxysalicylidene)-2,2-dimethyl-1,3-diaminopropane) have been synthesised by a reaction of Cu(valpn) (or Cu(Me(2)valpn)), Ln(3+) and [Fe(CN)(6)](3-) in a molar ratio of 2 : 1 : 1. Complexes 1-3 have a CuLnFe trinuclear structure, consisting of phenoxo-bridged Cu-Ln and cyano-bridged Ln-Fe moieties. Complexes 4-7 contain phenoxo-bridged Cu(2)Ln units that are connected by [Fe(CN)(6)](3-) to form a one-dimensional (1D) zig-zag structure. In the trinuclear complexes 1-3, the [Fe(CN)(6)](3-) anion coordinates to Ln(3+), whereas it coordinates to Cu2+ in complexes 4-7. Magnetic studies demonstrate that there exists a ferromagnetic interaction between Cu(II) and Gd(III) ions via the phenoxo bridges, while the cyano-bridges transit antiferromagnetic coupling between low-spin Fe(III) and Cu(II) or Gd(III). The fitting to the magnetic susceptibilities of complexes 1 and 4 gave the parameters of J(CuGd) = 2.392 and 2.945 cm(-1), and J(FeGd) = -0.341 cm(-1) and J(FeCu) = -0.378 cm(-1). The ac magnetic measurements reveal that complex 6 shows slow magnetization relaxation with an energy barrier of 12.3 K and a relaxation time of tau(0) = 1.65 x 10(-6) s, which is typical of a single-chain magnet. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/35333]  |
| 专题 | 化学研究所_有机固体实验室 |
| 作者单位 | 1.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Mei-Jiao,Hu, Kong-Qiu,Liu, Cai-Ming,et al. Ligand-directed assembly of trinuclear and one-dimensional heterotrimetallic Cu(II)Ln(III)Fe(III) complexes: unusual antiferromagnetic (CuFeIII)-Fe-II coupling via cyano bridges[J]. NEW JOURNAL OF CHEMISTRY,2016,40(10):8643-8649. |
| APA | Liu, Mei-Jiao,Hu, Kong-Qiu,Liu, Cai-Ming,Cui, Ai-Li,&Kou, Hui-Zhong.(2016).Ligand-directed assembly of trinuclear and one-dimensional heterotrimetallic Cu(II)Ln(III)Fe(III) complexes: unusual antiferromagnetic (CuFeIII)-Fe-II coupling via cyano bridges.NEW JOURNAL OF CHEMISTRY,40(10),8643-8649. |
| MLA | Liu, Mei-Jiao,et al."Ligand-directed assembly of trinuclear and one-dimensional heterotrimetallic Cu(II)Ln(III)Fe(III) complexes: unusual antiferromagnetic (CuFeIII)-Fe-II coupling via cyano bridges".NEW JOURNAL OF CHEMISTRY 40.10(2016):8643-8649. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。