Designing a mononuclear dy-iii single-molecule magnet (smm) by using a n,o,n,o-based multichelating schiff base ligand and a -diketonate ligand
文献类型：期刊论文
| 作者 | Zhang, Sheng1,2; Mo, Wenjiao1; Yin, Bing3; Lue, Xingqiang2; Zhang, Jiangwei4 |
| 刊名 | New journal of chemistry
 |
| 出版日期 | 2019-01-07 |
| 卷号 | 43期号:1页码:454-462 |
| ISSN号 | 1144-0546 |
| DOI | 10.1039/c8nj04019b |
| 通讯作者 | Zhang, sheng(zhangsheng19890501@163.com) ; Yin, bing(rayinyin@nwu.edu.cn) ; Zhang, jiangwei(jwzhang@dicp.ac.cn) |
| 英文摘要 | Two mononuclear ln(iii) compounds, in which each ln(iii) is eight-coordinated, namely [ln(l)(tmpd)] (ln = dy (1) or er (2)), have been prepared using a multichelating schiff base ligand n,n-bis(2-hydroxy-5-methyl-3-formylbenzyl)-n,n-bis-(pyridin-2-ylmethyl)ethylenediamine (h2l) and a bidentate chelating -diketonate ligand (tmpd). the local geometry of the ln(iii) ions in 1 and 2 is close to the d-2d symmetry. notably, magnetic studies reveal that compound 2 displays no slow relaxation of magnetization while compound 1 exhibits single-molecule magnet (smm) behaviour in the absence of a static magnetic field, with an effective energy barrier (u-eff) of 66.81 cm(-1) (96.63 k). to deeply understand their different magnetic behaviours, the magnetic anisotropy of 1 and 2 is systematically studied by ab initio calculations. there was an obvious difference between the first excited state (kd1) and the experimental u-eff in 1 because the qtm within kd0 is not completely prohibited and the residual qtm could lead to a large discrepancy between experimentally-fitted u-eff and ab initio calculated crystal field splitting. no temperature/frequency dependence is recorded in the ac susceptibility of 2 because the ab initio magnetic easy axis of 2 does not lie close to any atom of the first sphere since it tries to avoid any strong electrostatic repulsion. moreover, the g(xy) value of kd0 of 2 is larger than that of 1 by three orders of magnitude leading to the probability of stronger qtm within kd0 of 2. |
| WOS关键词 | ION MAGNETS ; RELAXATION DYNAMICS ; BASIS-SETS ; DYSPROSIUM(III) ; SYMMETRY ; FIELD ; ANISOTROPY ; BEHAVIOR ; COMPLEXES ; SERIES |
| WOS研究方向 | Chemistry |
| WOS类目 | Chemistry, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | ROYAL SOC CHEMISTRY |
| WOS记录号 | WOS:000454329100052 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2372936 |
| 专题 | 大连化学物理研究所 |
| 通讯作者 | Zhang, Sheng; Yin, Bing; Zhang, Jiangwei |
| 作者单位 | 1.Baoji Univ Arts & Sci, Coll Chem & Chem Engn, Baoji 721013, Peoples R China 2.Northwest Univ, Shaanxi Key Lab Degradable Med Mat, Sch Chem Engn, Xian 710069, Shaanxi, Peoples R China 3.Northwest Univ, Coll Chem & Mat Sci, Key Lab Synthet & Nat Funct Mol Chem, Minist Educ, Xian 710069, Shaanxi, Peoples R China 4.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Sheng,Mo, Wenjiao,Yin, Bing,et al. Designing a mononuclear dy-iii single-molecule magnet (smm) by using a n,o,n,o-based multichelating schiff base ligand and a -diketonate ligand[J]. New journal of chemistry,2019,43(1):454-462. |
| APA | Zhang, Sheng,Mo, Wenjiao,Yin, Bing,Lue, Xingqiang,&Zhang, Jiangwei.(2019).Designing a mononuclear dy-iii single-molecule magnet (smm) by using a n,o,n,o-based multichelating schiff base ligand and a -diketonate ligand.New journal of chemistry,43(1),454-462. |
| MLA | Zhang, Sheng,et al."Designing a mononuclear dy-iii single-molecule magnet (smm) by using a n,o,n,o-based multichelating schiff base ligand and a -diketonate ligand".New journal of chemistry 43.1(2019):454-462. |
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来源：大连化学物理研究所
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