Coligand modifications fine-tuned the structure and magnetic properties of two triple-bridged azido-Cu(II) chain compounds exhibiting ferromagnetic ordering and slow relaxation
文献类型：期刊论文
| 作者 | Wu, Yuewei1; Zhang, Chengcheng1; Xu, Zhao1; Xie, Gang2; Song, Weiming1; Liu, Xiangyu1; Li, Feifei1; Ma, Xiaohui1; Cen, Peipei1,2; Luo, Shuchang3 |
| 刊名 | DALTON TRANSACTIONS
 |
| 出版日期 | 2017 |
| 卷号 | 46期号:4页码:1207-1217 |
| ISSN号 | 1477-9226 |
| DOI | 10.1039/c6dt04108f |
| 文献子类 | Article |
| 英文摘要 | Employing two benzoate derivatives with different numbers of non-coordinated fluoro-substituents, 2-fluorobenzoic acid (2-Hfba) and 2,6-difluorobenzoic acid (2,6-Hdfba), two new azido-copper coordination polymers, [Cu(2-fba)(N-3)(CH3OH)](n) (1) and [Cu(2,6-dfba)(N-3)(CH3OH)](n) (2), have been successfully isolated, and then structurally and magnetically investigated. Single crystal structure analysis demonstrates that the metal cations in the two resulting compounds are connected by the alternating triple-bridge of mu-1,1-azido, syn, syn-carboxylate and eta 2-methanol, contributing to analogously linear 1D Cu(II) chain-like motifs with slightly different intrachain and interchain geometric parameters. The fine-tuned structures lead to variant magnetic properties in the two title compounds. Although a dominant ferromagnetic coupling between adjacent Cu(II) ions within each chain due to the counter-complementarity of the multiple superexchange pathways is observed in both compounds, the interesting plots of magnetic ordering and slow magnetic relaxation, which are rare in most of the reported azido-Cu(II) architectures, only occur in compound 1, while 2 behaves as an antiferromagnet consisting of ferromagnetic Cu(II) chains. The heat-capacity experiments further emphasize the characteristic long-range ferromagnetic ordering in 1 and the typical behavior of antiferromagnets in 2. Moreover, density functional theory (DFT) calculations (using different methods and basis sets) have been performed on both compounds to obtain the qualitatively theoretical interpretation of the magnetic behaviors. |
| WOS关键词 | SINGLE-MOLECULE MAGNETS ; TRANSITION-METAL-COMPLEXES ; END-ON AZIDO ; COPPER(II) COORDINATION POLYMERS ; EXCHANGE COUPLING-CONSTANTS ; DENSITY-FUNCTIONAL THEORY ; GAUSSIAN-BASIS SETS ; CRYSTAL-STRUCTURE ; MN-II ; CO-II |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000395373200021 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/169594]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Liu, Xiangyu; Shi, Quan; Chen, Sanping |
| 作者单位 | 1.Ningxia Univ, Coll Chem & Chem Engn, State Key Lab Cultivat Base Nat Gas Convers, Yinchuan 750021, Peoples R China 2.Northwest Univ Xian, Coll Chem & Mat Sci, Key Lab Synthet & Nat Funct Mol Chem, Minist Educ, Xian 710069, Peoples R China 3.Guizhou Univ Engn Sci, Sch Chem Engn, Bijie 551700, Peoples R China 4.Chinese Acad Sci, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Yuewei,Zhang, Chengcheng,Xu, Zhao,et al. Coligand modifications fine-tuned the structure and magnetic properties of two triple-bridged azido-Cu(II) chain compounds exhibiting ferromagnetic ordering and slow relaxation[J]. DALTON TRANSACTIONS,2017,46(4):1207-1217. |
| APA | Wu, Yuewei.,Zhang, Chengcheng.,Xu, Zhao.,Xie, Gang.,Song, Weiming.,...&Ma, Shenru.(2017).Coligand modifications fine-tuned the structure and magnetic properties of two triple-bridged azido-Cu(II) chain compounds exhibiting ferromagnetic ordering and slow relaxation.DALTON TRANSACTIONS,46(4),1207-1217. |
| MLA | Wu, Yuewei,et al."Coligand modifications fine-tuned the structure and magnetic properties of two triple-bridged azido-Cu(II) chain compounds exhibiting ferromagnetic ordering and slow relaxation".DALTON TRANSACTIONS 46.4(2017):1207-1217. |
入库方式： OAI收割
来源：大连化学物理研究所
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