Investigation of magneto-structural correlation based on a series of seven-coordinated -diketone Dy(iii) single-ion magnets with C-2v and C-3v local symmetry

Yao Xu; Yan Pengfei; An Guanghui; Li Yuxin; Li Weizuo; Li Guangming

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Investigation of magneto-structural correlation based on a series of seven-coordinated -diketone Dy(iii) single-ion magnets with C-2v and C-3v local symmetry

机译：基于一系列七种协调的酮（III）单离子磁体的磁结构相关性研究，具有C-2V和C-3V局部对称性

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A series of four -diketone mononuclear Dy(iii) complexes, namely Dy(Hthd)(3)(MeOH)center dot 2,5-Py (1), Dy(Hthd)(3)(Tppo) (2), Dy(Hthd)(3)(PyNO) (3), and Dy(Hthd)(3)(4-PyNO) (4) (Hthd = 2,2,6,6-tetramethyl-3,5-heptanedione, 2,5-Py = 2,5-pyridine, Tppo = triphenylphosphine oxide, PyNO = pyridine N-oxide, 4-PyNO = 4-methylpyridine N-oxide), have been isolated by reactions of Hthd, DyCl3 center dot 6H(2)O and an auxiliary ligand. X-ray crystallographic analysis revealed that complexes 1-4 are all seven-coordinated mononuclear structures with C-2v or C-3v local symmetry. The magnetic measurements of complexes 1-4 revealed their field-induced single-ion magnet (SIM) behavior, due to mixed low-lying states. The crystal field parameters and orientations of the magnetic easy axes were obtained from simulations of the DC magnetic data and an electrostatic model calculation. The magneto-structural correlation of seven-coordinated Dy(iii) SIMs with low-symmetry coordination environments was further discussed.

机译：一系列四酮单核μ型配合物，即Dy（HTHD）（3）（MeOH）中心点2,5-PY（1），Dy（HTHD）（3）（TPPO）（2），Dy （HTHD）（3）（PyNO）（3）和Dy（HTHD）（3）（4-PYNO）（4）（HTHD = 2,2,6,6-四甲基-3,5-庚烷，2， 5-py = 2,5-吡啶，TPPO =三苯基膦，PynO =吡啶N-氧化物，4-β-= 4-甲基吡啶N-氧化物，通过HTHD，DYCL3中心点6H（2）O的反应分离和辅助配体。 X射线结晶分析显示，复合物1-4是具有C-2V或C-3V局部对称性的七种协调的单核结构。复合物1-4的磁测量揭示了它们的现场诱导的单离子磁体（SIM）行为，由于混合低洼状态。从DC磁数据的模拟和静电模型计算获得磁体易轴的晶场参数和方向。进一步讨论了具有低对称性协调环境的七个协调DY（III）SIMS的磁结构相关性。

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来源
《Dalton transactions: An international journal of inorganic chemistry》 |2018年第11期|共9页
作者
Yao Xu; Yan Pengfei; An Guanghui; Li Yuxin; Li Weizuo; Li Guangming;
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Heilongjiang Univ Sch Chem &

Mat Sci Key Lab Funct Inorgan Mat Chem MOE 74 Xuefu Rd Harbin 150080 Heilongjiang Peoples R China;

Heilongjiang Univ Sch Chem &

Mat Sci Key Lab Funct Inorgan Mat Chem MOE 74 Xuefu Rd Harbin 150080 Heilongjiang Peoples R China;

Heilongjiang Univ Sch Chem &

Mat Sci Key Lab Funct Inorgan Mat Chem MOE 74 Xuefu Rd Harbin 150080 Heilongjiang Peoples R China;

Heilongjiang Univ Sch Chem &

Mat Sci Key Lab Funct Inorgan Mat Chem MOE 74 Xuefu Rd Harbin 150080 Heilongjiang Peoples R China;

Heilongjiang Univ Sch Chem &

Mat Sci Key Lab Funct Inorgan Mat Chem MOE 74 Xuefu Rd Harbin 150080 Heilongjiang Peoples R China;

Heilongjiang Univ Sch Chem &

Mat Sci Key Lab Funct Inorgan Mat Chem MOE 74 Xuefu Rd Harbin 150080 Heilongjiang Peoples R China;

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中图分类化学;无机化学;
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1. Investigation of magneto-structural correlation based on a series of seven-coordinated -diketone Dy(iii) single-ion magnets with C-2v and C-3v local symmetry [J] . Yao Xu, Yan Pengfei, An Guanghui, Dalton transactions: An international journal of inorganic chemistry . 2018,第11期

机译：基于一系列七种协调的酮（III）单离子磁体的磁结构相关性研究，具有C-2V和C-3V局部对称性
2. Lanthanoid Single-Ion Magnets Based on Polyoxometalates with a 5-fold Symmetry: The Series [LnP_5W_(30)O_(110)]~(12-) (Ln~(3+) = Tb, Dy, Ho, Er, Tm, and Yb) [J] . S. Cardona-Serra, J. M. Clemente-Juan, E. Coronado, Journal of the American Chemical Society . 2012,第36期

机译：具有5倍对称性的基于多金属氧酸盐的镧系元素单离子磁体：[LnP_5W_（30）O_（110）]〜（12-）系列（Ln〜（3+）= Tb，Dy，Ho，Er，Tm，和Yb）
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6. High symmetry or low symmetry that is the question – high performance Dy(iii) single-ion magnets by electrostatic potential design [O] . Wen-Bin Sun, Peng-Fei Yan, Shang-Da Jiang, 2016

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Investigation of magneto-structural correlation based on a series of seven-coordinated -diketone Dy(iii) single-ion magnets with C-2v and C-3v local symmetry

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