Synthesis, crystal structure and magnetic properties of dinuclear Ni(II)Ln(III) complexes based on a flexible polydentate ligand | |
Xie, Qi-Wei1; Wu, Shu-Qi1; Liu, Cai-Ming2; Cui, Ai-Li1; Kou, Hui-Zhong1 | |
刊名 | DALTON TRANSACTIONS
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2013 | |
卷号 | 42期号:31页码:11227-11233 |
ISSN号 | 1477-9226 |
DOI | 10.1039/c3dt50818h |
英文摘要 | The synthesis and characterization of three isomorphous complexes [Ni-II(L)Ln(III)(DBM)(3)] (Ln = Gd (1.2.5CH(3)CN center dot 0.5H(2)O), Tb (2.2CH(3)CN center dot 0.5MeOH), and Dy (3.2CH(3)CN center dot 0.5MeOH center dot 0.5H(2)O)) are reported (H2L = N,N'-dimethyl-N,N'-(2-hydroxy-3-methoxy-5-methylbenzyl)ethylenediamine, DBM- = anion of 1,3-diphenylpropane-1,3-dione). The flexible ligand L2- contains an N2O2-inner and an O-4-outer coordination site. There are diphenoxo bridges between NiII and LnIII ions in these complexes. The remaining coordination sites are occupied by DBM-anions. Direct current (dc) magnetic susceptibility measurements indicate the presence of intramolecular ferromagnetic interactions in desolvated complexes 1-3. The magnetic coupling constant J(NiGd) in complex 1 is estimated to be 1.11 cm(-1) (H = -2/NiGdSNiSGd). Alternating current (ac) magnetic susceptibility studies reveal that complexes 2 and 3 show frequency-dependent out-of-phase signals, which indicate that they exhibit SMM behavior. The energy barriers for complexes 2 and 3 under a 2 kOe applied direct current (dc) magnetic field are estimated from Arrhenius plots to be 14.4 and 11.3 K, respectively. |
语种 | 英语 |
出版者 | ROYAL SOC CHEMISTRY |
WOS记录号 | WOS:000321910000024 |
内容类型 | 期刊论文 |
源URL | [http://ir.iccas.ac.cn/handle/121111/47079] ![]() |
专题 | 中国科学院化学研究所 |
通讯作者 | Kou, Hui-Zhong |
作者单位 | 1.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Ctr Mol Sci, Inst Chem, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Xie, Qi-Wei,Wu, Shu-Qi,Liu, Cai-Ming,et al. Synthesis, crystal structure and magnetic properties of dinuclear Ni(II)Ln(III) complexes based on a flexible polydentate ligand[J]. DALTON TRANSACTIONS,2013,42(31):11227-11233. |
APA | Xie, Qi-Wei,Wu, Shu-Qi,Liu, Cai-Ming,Cui, Ai-Li,&Kou, Hui-Zhong.(2013).Synthesis, crystal structure and magnetic properties of dinuclear Ni(II)Ln(III) complexes based on a flexible polydentate ligand.DALTON TRANSACTIONS,42(31),11227-11233. |
MLA | Xie, Qi-Wei,et al."Synthesis, crystal structure and magnetic properties of dinuclear Ni(II)Ln(III) complexes based on a flexible polydentate ligand".DALTON TRANSACTIONS 42.31(2013):11227-11233. |
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