Triimidosulfonates as Acute Bite-Angle Chelates: Slow Relaxation of the Magnetization in Zero Field and Hysteresis Loop of a Co-II Complex

Carl Elena; Demeshko Serhiy; Meyer Franc; Stalke Dietmar

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Triimidosulfonates as Acute Bite-Angle Chelates: Slow Relaxation of the Magnetization in Zero Field and Hysteresis Loop of a Co-II Complex

机译：Triimidosulfonates作为急性咬角螯合物：零磁场和Co-II复合物的磁滞回线中磁化的缓慢弛豫。

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Starting from a polyimido sulfonate the four-coordinate, N,N-chelated Co-II complex [Co{(NtBu)(3)SMe}(2)] (1) was synthesized, and its molecular structure was elucidated by single-crystal X-ray structural analysis. The acute N-Co-N bite angle imposed by the N,N-chelating ligand (NtBu)(3)SMe- leads to pronounced C-2v distortion of the tetrahedral coordination environment and thus to high anisotropy of the Co-II ion (D approximate to-58cm(-1)), favorable for single-molecule-magnet (SMM) properties. Magnetic measurements revealed a high barrier to spin reversal (U-eff=75cm(-1)) that gives rise to the observation of slow relaxation of the magnetization in zero field and a hysteresis loop at 2K for this unique complex.

机译：从聚亚氨基磺酸盐开始，合成了四配位，N，N螯合的Co-II配合物[Co {（NtBu）（3）SMe}（2）]（1），并通过单晶阐明了其分子结构。 X射线结构分析。 N，N-螯合配体（NtBu）（3）SMe-施加的急性N-Co-N咬合角导致四面体配位环境的C-2v畸变，从而导致Co-II离子的高各向异性（ D约为-58cm（-1）），有利于单分子磁体（SMM）的性能。磁测量结果揭示了自旋反转的高障碍（U-eff = 75cm（-1）），这引起了人们对零场中磁化强度缓慢弛豫和这种独特复合物在2K处的磁滞回线的观察。

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《Chemistry: A European journal》 |2015年第28期|共7页
作者
Carl Elena; Demeshko Serhiy; Meyer Franc; Stalke Dietmar;
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cobalt; magnetic properties; single-molecule magnets; polyimidosulfonate; X-ray diffraction;

机译：钴;磁性能;单分子磁体;聚酰亚胺磺酸盐;X射线衍射;

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1. Triimidosulfonates as Acute Bite-Angle Chelates: Slow Relaxation of the Magnetization in Zero Field and Hysteresis Loop of a Co-II Complex [J] . Carl Elena, Demeshko Serhiy, Meyer Franc, Chemistry: A European journal . 2015,第28期

机译：Triimidosulfonates作为急性咬角螯合物：零磁场和Co-II复合物的磁滞回线中磁化的缓慢弛豫。
2. A Family of (CoCo3III)-Co-II Single-Ion Magnets with Zero-Field Slow Magnetic Relaxation: Fine Tuning of Energy Barrier by Remote Substituent and Counter Cation [J] . Zhu Yuan-Yuan, Zhang Yi-Quan, Yin Ting-Ting, Inorganic Chemistry: A Research Journal that Includes Bioinorganic, Catalytic, Organometallic, Solid-State, and Synthetic Chemistry and Reaction Dynamics . 2015,第11期

机译：具有零场慢磁弛豫的（CoCo3III）-Co-II单离子磁体家族：通过远程取代和反阳离子对能垒进行微调
3. Magnetic blocking from exchange interactions: Slow relaxation of the magnetization and hysteresis loop observed in a dysprosium-nitronyl nitroxide chain compound with an antiferromagnetic ground state [J] . Han T., Shi W., Niu Z., Chemistry: A European journal . 2013,第3期

机译：交换相互作用引起的磁阻：在具有反铁磁性基态的-亚硝基硝基氮氧化物链化合物中观察到磁化和磁滞回线的缓慢松弛
4. Effect of magnetizing field strength and magnetizing frequency on hysteresis loop shape and its characteristics [C] . M.Vashista, Mohd.Zaheer Khan Yusufzai International Conference on Recent Advances in Materials and Manufacturing Technologies . 2018

机译：磁化场强度与磁化频率对滞后环形状及其特性的影响
5. Slow Magnetic Relaxation in f-Element Complexes: A Tale of Dipolar Interactions, Symmetry, and Magnetic Hysteresis [D] . Meihaus, Katie Ruth 2015

机译：f元素复合物中的慢磁弛豫：偶极相互作用，对称性和磁滞现象
6. Magnetic Anisotropy and Field-induced Slow Relaxation of Magnetization in Tetracoordinate CoII Compound Co(CH3-im)2Cl2 [O] . Ivan Nemec, Radovan Herchel, Michal Kern, 2017

机译：四配位CoII化合物Co（CH3-im）2Cl2的磁各向异性和磁场诱导的磁化慢弛豫
7. Butterfly hysteresis loop at non-zero bias field in antiferromagnetic molecular rings: cooling by adiabatic magnetization [O] . Waldmann, O., Koch, R., Schromm, S., 2002

机译：反铁磁性非零偏置场的蝶形磁滞回线分子环：通过绝热磁化冷却

Triimidosulfonates as Acute Bite-Angle Chelates: Slow Relaxation of the Magnetization in Zero Field and Hysteresis Loop of a Co-II Complex

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