Enhancing single-molecule magnet behaviour through decorating terminal ligands in Dy-2 compounds
文献类型：期刊论文
| 作者 | Ma, Xiufang3; Chen, Bingbing3; Zhang, Yi-Quan1; Yang, Jinhui3; Shi, Quan2; Ma, Yulong3; Liu, Xiangyu3 |
| 刊名 | DALTON TRANSACTIONS
 |
| 出版日期 | 2019-09-07 |
| 卷号 | 48期号:33页码:12622-12631 |
| ISSN号 | 1477-9226 |
| DOI | 10.1039/c9dt02758k |
| 通讯作者 | Zhang, Yi-Quan(zhangyiquan@njnu.edu.cn) ; Shi, Quan(shiquan@dicp.ac.cn) ; Liu, Xiangyu(xiangyuliu432@126.com) |
| 英文摘要 | The utilization of two isomorphic ligands with different substituents leads to two centrosymmetric Dy-III dimers, namely, [Dy-2(bfbpen)(2)(H2O)(2)]center dot 2I(-) (1) and [Dy-2(bcbpen)(2)(H2O)(2)]center dot 2I(-)center dot 0.5H(2)O (2) (H(2)bfbpen = N,N '-bis-(2-hydroxy-5-fluoro-benzyl)-N,N '-bis-(pyridin-2-ylmethyl)ethylenediamine and H(2)bcbpen = N,N '-bis-(2-hydroxy-5-chloro-benzyl)-N,N '-bis-(pyridin-2-ylmethyl)ethylenediamine). Although Dy ions in both compounds uniformly exhibit a square-antiprism geometry, the critical difference found in the terminal substituents of the two ligands fine-tunes the local crystal field around Dy centers and the dinuclear molecular structures of 1 and 2. Magnetic investigations unveil that both 1 and 2 display dynamic magnetic relaxation of single-molecule magnet (SMM) behaviour with different energy barriers of 20.9 K for 1 and 72.7 K for 2 under a zero direct-current (dc) field, as well as 26.9 K for 1 under a 1200 Oe dc field. Compared to 1, the stronger uniaxial anisotropy and magnetic exchange in 2 render it a better SMM as evidenced by the higher energy barrier. Ab initio calculations are also performed on both Dy-2 compounds to rationalize the observed discrepancy in their magnetic behaviours. The contribution illustrates that the SMM behaviour could be effectively enhanced by means of deliberate local structural manipulation. |
| WOS关键词 | DYSPROSIUM TRIANGLES ; LANTHANIDE COMPLEXES ; RELAXATION DYNAMICS ; 2-STEP RELAXATION ; CRYSTAL-STRUCTURE ; SLOW RELAXATION ; ION-MAGNET ; ANISOTROPY ; MAGNETIZATION ; SYMMETRY |
| 资助项目 | NSFC[21863009] ; NSFC[21463020] ; NSFC[21868026] ; NSFC[11774178] ; Third Batch of Ningxia Youth Talents Supporting Program[TJGC2018038] ; discipline project of Ningxia[NXYLXK2017A04] ; Undergraduate Innovative and Entrepreneurial Training Program of Ningxia Province[2019107490041] ; Major Innovation Projects for Building First-class Universities in China's Western Region[ZKZD2017003] |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000481917100023 |
| 资助机构 | NSFC ; NSFC ; Third Batch of Ningxia Youth Talents Supporting Program ; Third Batch of Ningxia Youth Talents Supporting Program ; discipline project of Ningxia ; discipline project of Ningxia ; Undergraduate Innovative and Entrepreneurial Training Program of Ningxia Province ; Undergraduate Innovative and Entrepreneurial Training Program of Ningxia Province ; Major Innovation Projects for Building First-class Universities in China's Western Region ; Major Innovation Projects for Building First-class Universities in China's Western Region ; NSFC ; NSFC ; Third Batch of Ningxia Youth Talents Supporting Program ; Third Batch of Ningxia Youth Talents Supporting Program ; discipline project of Ningxia ; discipline project of Ningxia ; Undergraduate Innovative and Entrepreneurial Training Program of Ningxia Province ; Undergraduate Innovative and Entrepreneurial Training Program of Ningxia Province ; Major Innovation Projects for Building First-class Universities in China's Western Region ; Major Innovation Projects for Building First-class Universities in China's Western Region ; NSFC ; NSFC ; Third Batch of Ningxia Youth Talents Supporting Program ; Third Batch of Ningxia Youth Talents Supporting Program ; discipline project of Ningxia ; discipline project of Ningxia ; Undergraduate Innovative and Entrepreneurial Training Program of Ningxia Province ; Undergraduate Innovative and Entrepreneurial Training Program of Ningxia Province ; Major Innovation Projects for Building First-class Universities in China's Western Region ; Major Innovation Projects for Building First-class Universities in China's Western Region ; NSFC ; NSFC ; Third Batch of Ningxia Youth Talents Supporting Program ; Third Batch of Ningxia Youth Talents Supporting Program ; discipline project of Ningxia ; discipline project of Ningxia ; Undergraduate Innovative and Entrepreneurial Training Program of Ningxia Province ; Undergraduate Innovative and Entrepreneurial Training Program of Ningxia Province ; Major Innovation Projects for Building First-class Universities in China's Western Region ; Major Innovation Projects for Building First-class Universities in China's Western Region |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/173615]  |
| 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 | Zhang, Yi-Quan; Shi, Quan; Liu, Xiangyu |
| 作者单位 | 1.Nanjing Normal Univ, Sch Phys Sci & Technol, Jiangsu Key Lab NSLSCS, Nanjing 210023, Jiangsu, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China 3.Ningxia Univ, Coll Chem & Chem Engn, Natl Demonstrat Ctr Expt Chem Educ, State Key Lab High Efficiency Utilizat Coal & Gre, Yinchuan 750021, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Xiufang,Chen, Bingbing,Zhang, Yi-Quan,et al. Enhancing single-molecule magnet behaviour through decorating terminal ligands in Dy-2 compounds[J]. DALTON TRANSACTIONS,2019,48(33):12622-12631. |
| APA | Ma, Xiufang.,Chen, Bingbing.,Zhang, Yi-Quan.,Yang, Jinhui.,Shi, Quan.,...&Liu, Xiangyu.(2019).Enhancing single-molecule magnet behaviour through decorating terminal ligands in Dy-2 compounds.DALTON TRANSACTIONS,48(33),12622-12631. |
| MLA | Ma, Xiufang,et al."Enhancing single-molecule magnet behaviour through decorating terminal ligands in Dy-2 compounds".DALTON TRANSACTIONS 48.33(2019):12622-12631. |
入库方式： OAI收割
来源：大连化学物理研究所
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