Erbium-formate frameworks templated by diammonium cations: syntheses, structures, structural transition and magnetic properties
文献类型：期刊论文
| 作者 | Li, Mengyuan2; Liu, Bin2; Wang, Bingwu2; Wang, Zheming2; Gao, Song2; Kurmoo, Mohamedally1 |
| 刊名 | DALTON TRANSACTIONS
 |
| 出版日期 | 2011 |
| 卷号 | 40期号:22页码:6038-6046 |
| ISSN号 | 1477-9226 |
| DOI | 10.1039/c1dt10241a |
| 英文摘要 | Two structurally different Er-formate frameworks, one NaCl-like [dmenH(2)][Er(HCOO)(4)](2) (1) and the other pillared-layer type [tmenH(2)][Er(HCOO)(4)](2) (2), were obtained when templated by the corresponding protonated N, N'-dimethylethylenediamine (dmenH(2)) and N, N, N',N'-tetramethylethylenediamine (tmenH(2)). The shape and size of the template cations dictate the different coordination geometries of erbium and consequently the framework topologies, though erbium adopts eight coordination in the two compounds. In the NaCl-like structure of 1, erbium is coordinated by eight anti-anti bridging formates in a square antiprism, while in the pillared-layer structure of 2, it is coordinated by six anti-anti bridging formates and one chelating formate in a pentagonal bipyramid. 2 exhibits a structural phase transition around -70 degrees C which is related to the disorder-order transition of the template cation. Both compounds behave as paramagnets between 2 and 300 K. However, they display field-dependent ac-susceptibilities with complicated field-induced magnetic relaxation processes, and the major slow ones probably results from spin-lattice relaxation. |
| 语种 | 英语 |
| WOS记录号 | WOS:000291034300027 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/73465]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Kurmoo, Mohamedally |
| 作者单位 | 1.Univ Strasbourg, Lab DECOMET, CNRS, UMR 7177, F-67000 Strasbourg, France 2.Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Mengyuan,Liu, Bin,Wang, Bingwu,et al. Erbium-formate frameworks templated by diammonium cations: syntheses, structures, structural transition and magnetic properties[J]. DALTON TRANSACTIONS,2011,40(22):6038-6046. |
| APA | Li, Mengyuan,Liu, Bin,Wang, Bingwu,Wang, Zheming,Gao, Song,&Kurmoo, Mohamedally.(2011).Erbium-formate frameworks templated by diammonium cations: syntheses, structures, structural transition and magnetic properties.DALTON TRANSACTIONS,40(22),6038-6046. |
| MLA | Li, Mengyuan,et al."Erbium-formate frameworks templated by diammonium cations: syntheses, structures, structural transition and magnetic properties".DALTON TRANSACTIONS 40.22(2011):6038-6046. |
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来源：化学研究所
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