Synthesis, crystal structure and magnetic properties of dinuclear Ni(II)Ln(III) complexes based on a flexible polydentate ligand

doi:10.1039/c3dt50818h

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	Synthesis, crystal structure and magnetic properties of dinuclear Ni(II)Ln(III) complexes based on a flexible polydentate ligand
	Xie, Qi-Wei 1; Wu, Shu-Qi 1; Liu, Cai-Ming 2; Cui, Ai-Li 1; Kou, Hui-Zhong 1
刊名	DALTON TRANSACTIONS
	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.