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中国化学会第九届全国无机化学学术会议

作者： Hua Yang dacheng li Jianmin Dou Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology School of Chemistry and Chemical EngineeringLiaocheng University

Considerable effort has been dedicated to the syntheses and properties of 3d-4f complexes due to their performance of molecular magnesium including single-molecule magnets（SMMs）,single-chain magnets（SCMs）,and magnetic refrigerants.[1,2]Oxime ligands can supply multiple donor atoms（N and O atoms）and easily coordinate with different ions to form various structural *** large number of such cases possess Mn39-metallacrown-3 and Mn6 offset 9-metallacrown-3 configurations.[3]However,heterometallic 3d-4f complexes from oxime ligands are few to date.[4]Herein,we present three Ni-4f complexes involving three light lanthanide ions and methyl-2-pyridylketoxime ligand（Hmpk）with the complexes formula[Ln3Ni3（O2）（mpk）9（NO3）3（CH3O）2]（Ln=Pr,Nd,Sm）.The structure is shown with the Nd-Ni complex discussed as the *** NdⅢ and three NiⅡ ions link together through N-O bridges with three LnⅢ ions form a Ln3O2 triangle in the interior and three NiⅡ ions surrounding in the external（Fig.1）.The central two O atoms are overlapping seen from the top *** coordination atoms are supplied by nine mpk-,three NO3-anions,two CH3OH and one OH-.Theπ...πpacking interactions among molecules form a 1D chain with the distance of ***,the reaction of Hmpk and heavy lanthanide ions and the corresponding magnetic properties will be investigated in the approaching work.

关键词： Methyl-2-pyridylketoxime Heterometallic Crystal structure Packing interaction

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Synthesis and Bioactivity of a Novel Palladium Modified polyoxovanadate Compound

Synthesis and Bioactivity of a Novel Palladium Modified poly...

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中国化学会第八届全国配位化学会议

作者： Dandan zhong dacheng li Xianqiang Huang School of Chemistry and Chemical Engineering and Shandong Provincal Key Laboratory of Chemical Energy Storage and Novel Cell Technology Liaocheng University Institute of BioPharmaccutical Research Liaocheng University

Polyoxometalates are composed by the structural diversity of cationic and the polyanionic *** recent years,these compounds as anti-virus and anti-tumor medicine become more popular in our research,the polyoxometalates of contained precious metal have important applications in the anti-tumor,thus these compounds have attracted much attention by chemists,The study of polyoxometalates in precious metals is also becoming a hot *** polyoxometalates of the transition metal pd-povs by imidazole modification has not yet been reported in the *** palladium as coordination atoms,imidazole equilibrium charge,the POMs of palladium-vanadium is *** compound crystallizes in the monoclinic space group(Fig.1).And then explore the antitumor activity by MTT method.

关键词： palladium acetate Polyoxometalates crystal structure biological activity

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Heterometallic Dy4Na2 azametallacrown and single molecule magnet bahavior

Heterometallic Dy4Na2 azametallacrown and single molecule ma...

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中国化学会第九届全国无机化学学术会议

作者： Hua Yang dacheng li Jianmin Dou Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology School of Chemistry and Chemical EngineeringLiaocheng University

The tetranuclear Dy4 complexes present remarkable single molecule magnet behavior（SMMs）,which might be associated with the diverse cores including fused triangular,coplanar,butterfly or defect-dicubane.[1,2]Metallacrowns（MCs）have metalmacrocyclic structures,and so far,mainly contain two types,namely,N-O MCs and N-N *** latter was recognized as azametallazrowns（aza MCs）.Aza MCs also display different structural motifs.[3]However,the formation of most of aza MCs involves transition metal *** heterometallic or lanthanide azametallacrowns have been *** the present study,a rigid,unsymmetrical triazole-bridge ligand3-（2-hydroxyphenyl）-5-（pyrazin-2-yl）-1,2,4-triazole（H2ppt）with phenol and pyrazine groups was used to synthesize the aza MCs.A novel heterometallic aza MC[Na2{Dy4（H2O）2（ppt）6（OAc）2}（DMF）4]has been reported（Fig.1）.Four DyⅢ and two NaI ions link together through the peripheral six deprotonated ppt2-ligands and twou3-OAc-groups as well as internal twou3-OH-groups to form a rare 14-aza MC-6 ring with[Dy-O-Na-N-N-Dy-O]connectivity,and four DyⅢ ions are nearly *** measurements reveal that frequency dependence signals indicate slow magnetization relaxation,a typical of SMM behavior,and two relaxation processes occurred after an applied 2000 Oe dc field（Fig.2）.Cole-Cole plots exhibit an approaching semi-circle shape.

关键词： Trazole-bridging ligand Heterometallic Azametallacrown,Crystal Structure SMM behavior

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高速铁路主跨450m斜拉桥应用无砟轨道可行性研究与设计优化

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铁道标准设计 2023年第2期67卷 24-29页

作者：李大成中国铁路设计集团有限公司天津300308

大跨度桥梁铺设无砟轨道现已成为扩大无砟轨道应用范围的又一技术难题,因此研究大跨桥上铺设无砟轨道的可行性十分必要。以某高速铁路主跨450 m大跨斜拉桥为例,针对无砟轨道应用的可行性及轨道结构设计参数进行研究,从而为大跨度桥上无... 详细信息

大跨度桥梁铺设无砟轨道现已成为扩大无砟轨道应用范围的又一技术难题,因此研究大跨桥上铺设无砟轨道的可行性十分必要。以某高速铁路主跨450 m大跨斜拉桥为例,针对无砟轨道应用的可行性及轨道结构设计参数进行研究,从而为大跨度桥上无砟轨道应用及结构设计提供理论依据。主要结论如下:(1)在大跨桥梁活载、温度等变形条件下,无砟轨道各静、动力学指标均能满足安全服役要求,主跨450 m斜拉桥应用无砟轨道可行;(2)温度组合荷载作用下,桥梁主跨竖向变形曲率半径最小值为191 771 m,满足行车舒适性要求;(3)橡胶弹性垫层可有效协调轨道结构层间变形,显著降低底座动力响应,建议弹性垫层刚度取0.10 N/mm^(3);(4)轨道板常用板型均满足层间变形不脱空要求,设计布板时应尽量选择板长较小的轨道板;(5)考虑桥梁成桥偏差影响,底座板厚度取220 mm,自密实混凝土层加厚至105 mm。

关键词：高速铁路大跨度斜拉桥无砟轨道静动力学特性轨道几何不平顺设计优化

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The synthesis,structure and property study of copper（Ⅱ）-[15]-metallacrown-5 lanthanide complexes derived from glycine hydroxamic acid

The synthesis,structure and property study of copper（Ⅱ）-[...

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中国化学会第九届全国无机化学学术会议

作者： Yanxia Meng Hua Yang dacheng li Jianmin Dou Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology School of Chemistry and Chemical EngineeringLiaocheng University

Considerable effort have been dedicate to the formation and performance of metallcrowns（MCs）due to their interesting properties,such as catalytic activity,luminescence,magnetism,recognition of cation,anions and *** hydroxamic acid as ditopic ligand functions with metal ions to form two five-membered fused chelate *** far,only the copper[15]-metallacrown-5 gadolinium and europium complexes from glycine hydroximate ligand have been reported.[1,2]Based on the specific LnⅢ ions possessing a large magnetic moment and a large magnetoanisotropy,two lanthanide-containing copper[15]-metallacrown-5 DyⅢ[15-MCCu Ⅱ（N）（S）-phe HA-5]and HoⅢ[15-MCCu Ⅱ（N）（S）-phe HA-5]behaved single molecule magnet（SMM）behavior.[4]Herein,we used a similar method to synthesize a family of copper[15]-metallacrown-5 lanthanide（Ln=La,Pr,Nd,Sm,Tb,Dy,Ho）*** molecular structure and two-dimensional network structure of[Sm Cu5（Glyha）5（NO3）2（H2O）6]（NO3）·5H2O（1）as shown in fig.1 and *** the structure,five glycine hydroximates（glyha2-）and five copper（Ⅱ）ions form the nearly planar[15]-metallacrown-5 ring with Cu–N–O–Cu linkages formed by the five copper（Ⅱ）ions,the nitrogen and oxygen atoms of the five glycine hydroximate *** ring cavity encapsulates a lanthanide（Ⅲ）***,we are investigating their magnetic properties and luminescence,and the structure-magnetic effect will be discussed in the approaching work.

关键词： Hydroximic acid Metallacrown Magnetic property Luminescence

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城际铁路橡胶浮置板轨道动力特性理论试验研究

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铁道标准设计 2023年第3期67卷 84-90页

作者：李大成中国铁路设计集团有限公司天津300308

城际铁路沿线振动敏感区段多、减振要求较高,橡胶浮置板轨道以其良好的减振性能得到了广泛应用。为研究橡胶浮置板轨道结构动力学特性及其影响因素,建立车辆-橡胶浮置板轨道动力学模型,并开展室内落轴冲击试验,分别从理论与试验角度对... 详细信息

城际铁路沿线振动敏感区段多、减振要求较高,橡胶浮置板轨道以其良好的减振性能得到了广泛应用。为研究橡胶浮置板轨道结构动力学特性及其影响因素,建立车辆-橡胶浮置板轨道动力学模型,并开展室内落轴冲击试验,分别从理论与试验角度对橡胶浮置板轨道动力特性进行研究。主要结论如下:(1)橡胶浮置板轨道能够保证城际铁路平顺性要求,轨道结构位移、振动加速度等指标均满足标准要求;(2)城际铁路轨道振动基频在64 Hz附近,橡胶垫刚度越小,振动控制效果越好,刚度建议取0.019~0.042 N/mm^(3);(3)底座振动随车速呈线性增大,设计速度的提高对1~8 Hz及80 Hz以上振动有明显放大作用;(4)通过落轴试验证明,橡胶浮置板轨道在32~100 Hz频段内具有良好减振效果,可减小底座振动8 dB。

关键词：城际铁路橡胶浮置板轨道动力特性减振垫刚度减振效果

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Synthesis and Crystal Structure of a 12-azaMetallacrown-4 Mn-Tm complex

Synthesis and Crystal Structure of a 12-azaMetallacrown-4 Mn...

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2018年中西部地区无机化学化工学术研讨会

作者： Zhi liu Hua Yang dacheng li Jianmin Dou Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology School of Chemistry and Chemical Engineering Liaocheng University

Azametallacrowns（azaMCs）, a branch of Metallacrowns（MCs）, with the structural feature showing M-N-N repeat units in the ring, also have attrated considerable attention due to their fascinating properties, such as, magnetic, catalysis and bioactivity.[1,2] The syntheses of azaMC usually involved hydrazine, pyrazole and triazole ligands. However, the structural types displayed obvious difference. Based on the previous work,[3] herein, we prepared a 3 d-4 f azaMC through the reaction of 3-（2-oxyphenyl）-5-（pyrazine-1-yl）-1,2,4-triazole ligand（H2 hppt）, Mn（OAc）2·4 H2 O and Tm（NO3）3·6 H2 O with the molecular fomula [Mn2 Tm2（hppt）4（OH）2（OAc）2（DMF）（H2 O）]（Fig. 1）. The complex presents Mn-N-N-Tm-N-N and Mn-O-Tm-O double linkages with the N-N bridge supplied by triazole and O atom provied by OH-or OAc-. The homometallic ions are locate in the opposite possitions and display similar coordinated configuration with Mn ions having six coordination distored octahedral geometry and Tm ions possessing eight coordination distored aquare-antiprismatic geometry. Interesting, the OAc-groups adopt the rare μ3: η2: η1 mode with syn-anti and anti-anti coordination conformations. The cooresponding properties are carried out.

关键词： triazole ligand 3d-4f heterometallic azaMetallacrown,structure and synthesis

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The Structure and Magnetic Property of a Mn6 Complex

The Structure and Magnetic Property of a Mn6 Complex

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中国化学会第八届全国配位化学会议

作者： Wei Yang Hua Yang dacheng li Jianmin Dou School of Chemistry and Chemical Engineering and Shandong Provincal Key Laboratory of Chemical Energy Storage and Novel Cell Technology Liaocheng University Institute of BioPharmaccutical Research Liaocheng University

The field of single-molecule magnets(SMMs) have been attempted to probe by chemists for their potential application in high-density data storage,quantum computation and spintronics,[1,2]since the first SMM was reported in 1993.[3]Manganese ion usually has various valence states and six coordination Jahn-Teller effect in *** analysis of magnetic data of such complexes reveals antiferromagnetic,ferromagnetic,SMMs or single-chain magnetic(SCMs) behavior.[4,5]Herein,we successfully synthesized a Mn complex and explored its magnetic properties in *** complex 1 crystallizes in the monoclinic space group P2(l)/c(***).The structure unit is a six nuclear cluster containing four L ligands,six Mn ions,three MeOand one μ-O,one μ-*** Mn ions are further linked together by one μ-O and one μ-*** studies of magnetic property reveal dominant antiferromagnetic *** drop of X T value at 16 K is likely caused by ZFS,Zeeman effect and/or intermolecular interaction.

关键词： Phenolic pyrazoles ligand Multimanganese Structure Magnetic Properties

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Synthesis,Structure and Magnetic Properties of a Cage-like Cu6Gd6 Compound

Synthesis,Structure and Magnetic Properties of a Cage-like C...

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中国化学会第八届全国配位化学会议

作者： Bingbing Guo Hua Yang dacheng li Jianmin Dou Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology School of Chemistry and Chemical Engineering Liaocheng University Institute of BioPharmaceutical Research Liaocheng University

The lanthanide-based SMMs are attracting the growing attentions due to the intrinsic strong spin-orbital coupling and magnetic anisotropy of lanthanide(Ⅲ) ions[1].Their promising high anisotropic energy barrier(U) for the magnetization reversal and the blocking temperature(T)play a key role in their potential application in the high-density information storage[2].Based on these considerations,we designed the reaction of 2-hydroxy-3-carboxy-5-chlorobenzaldehyde oxime(H hccbdo) with gadolinium nitrate and copper acetate and obtained a novel dodecanuclear 3 d-4 f complex[Cu Gd(Hhccbdo)(hccbdo)(DMF)(H O)].The coplanar four Gd ions are ligated with carboxyl groups of ligands and form a 16-MC-4 cyclic structure with[Gd-O-C-O]repeating *** 16-MC-4 rings assembled into a rare cage-like *** copper ions are located the outside of the cage(Fig.1).Magnetic susceptibility reveals the ferromagnetic coupling between the metal ions of complex(Fig.2 a),and further AC magnetic data indicates the slow magnetic relaxation,a typical of single-molecule magnets behavior(Fig.2 b).

关键词： 2-Hydroxy-3-Carboxy-5-Chloro-Benzaldehyde Oxime 3d-4f Complex Slow Magnetic Relaxation

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Synthesis and Structure of a coordination polymer from 15-Metallacrown-5 units and ClO4- linkers

Synthesis and Structure of a coordination polymer from 15-Me...

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中国化学会第八届全国配位化学会议

作者： Heng Xu Hua Yang dacheng li Jianmin Dou Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology School of Chemistry and Chemical Engineering Liaocheng University Institute of BioPharmaceutical Research Liaocheng University

Considerable effort has been devoted to the studies of Metallacrowns(MCs) due to their aesthetically fascinating molecular architectures and diverse non-trivial properties,such as molecular magnets catalysts,sensors,and recognition agents for cations,anions or molecules[1,2].Hydroximic acid ligands with multidonors are the better candidates to prepare the *** is easy for them to coordinate and bridge homo/heterometallic ions to form unexpected complexes with charming structures and interesting ***,we designed the reaction of 2-picolinehydroxamic acid(picHa) with Cu(ClO)·6 H O and Er(ClO)·6 H O.A new heterometallic 3 d-4 f coordination complex {[Er(CH O) Cu(picHA)(ClO)]·(ClO)} was *** asymmetric unit is shown in *** Metallacrown core exhibits a 15-MC-5 structural type and was constructed by five Cu ions and five doubly deprotonated hydroximate *** Er ion is encapsulated in the cavity,achieving the recognition of the *** Cu is five-coordinated,tetragonal pyramid configuration with the equatorial plane coordination atoms from two deprotonated hydroximate ligands and the axial positions occupied by N atoms from py *** ion is seven-coordinated pentagonal bipyramid configuration with the planar coordination atoms from Metallacrown ring five O *** Metallacrown as "second-building blocks" are further linked by the coordinated ClOto form a 2-D coordination polymer(Fig.2)

关键词： 2-Picolinehydroxamic Acid 3d-4f Metallacrown Structure Coordination Polymer

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