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4′-(2-吡啶基)三联吡啶的镧系(Ⅲ)配合物的晶体结构、荧光性质和磁性

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无机化学学报 2024年第8期40卷 1442-1451页

作者：王朝阳杨春宋瑶瑶韩娜刘晓蒙王庆伦河北工业大学化工学院天津市本质安全化工技术重点实验室天津300130 南开大学化学学院先进能源材料化学教育部重点实验室天津300071

以4'-(2-吡啶基)-2,2'∶6',2″-三联吡啶(2-pyterpy)为配体,通过溶剂热法合成了5个双核配合物[Ln(2-pyterpy)(NO_(3))_(2)(μ-OCH_(3))]_(2)(Ln-2-pyterpy,Ln=Pr、Sm、Eu、Dy、Er)。单晶X射线衍射分析表明,配合物Pr-2-pyterpy和Sm-2-pyterpy同构,属于单斜晶系,P2_(1)空间群,a=0.95643(19)nm,b=1.9654(4)nm,c=1.1935(2)nm,β=90.41(3)°。配合物Er-2-pyterpy属于单斜晶系,C2/c空间群,a=2.8388(6)nm,b=1.2048(2)nm,c=1.5206(3)nm,β=121.70(3)°。粉末X射线衍射研究表明,配合物Eu-2-pyterpy与Dy-2-pyterpy同构且与文献报道的配合物[Ln(2-pyterpy)(NO_(3))_(2)(μ-OCH_(3))]_(2)(Ln=Tb,Dy)结构相同,属于单斜晶系,P2_(1)/n空间群。镧系收缩效应在调整该系列配合物结构中起到了重要作用。固态配合物Ln-2-pyterpy(Ln=Pr、Sm、Eu、Dy)均发射Ln(Ⅲ)的特征荧光。在300 K,配合物Ln-2-pyterpy(Ln=Pr、Sm、Eu、Dy)的χ_(M)T实验值与2个孤立的Ln(Ⅲ)离子的理论值基本一致。根据2 K时χ_(M)T实验值推断,配合物Sm-2-pyterpy和Eu-2-pyterpy的顺磁离子间分别通过甲氧基桥传递弱的反铁磁和铁磁耦合作用。

关键词：镧系(Ⅲ)配合物三联吡啶荧光性质磁性

Crystal Structure and Photoluminescence Properties of Two Barium（II） MOFs

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Chemical Research in Chinese Universities 2018年第5期34卷 700-704页

作者： LI Kai HE Kunhuan LI Quanwen XIA Bin wang qinglun ZHANG Yinghui Tianjin Key Laboratory of Metal and ~lolecule-based Material Chemistry School of Materials Science and Engineering Nankai University Tianjin 300350 P. R. China Collaborative Innovation Center of Chemical Science and Engineering(Tianjin) College of Chemistry Nankai University Tianjin 300071 P. R. China

In this article, two Ba（II） metal-organic frameworks（MOFs）, {[Ba（BPS）（H2O）2]＇H2O}n（1） and [Ba（BPS）（H2O）R]n（2）（H2BPS=4,4＇-bibenzoic acid-2,2＇-sulfone）, were synthesized and characterized. X-Ray crystal structural analyses reveal that compounds 1 and 2 have different structures, which is probably related to different coordination modes of ligand in compounds 1 and 2. It is remarkable that compounds 1 and 2 both show excellent thermal stability. The solid-state emission spectra reveal that compounds 1 and 2 both present strong luminescence emission bands at room temperature.

关键词： Metal-organic framework Coordination mode Thermal stability Solid-state emission spectrum Barium(II)

A zinc(Ⅱ) MOF based on secondary building units of infinite wavy-shaped chain exhibiting obvious luminescent sense effects

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Chinese Chemical Letters 2019年第2期30卷 499-501页

作者： Kai Li Kunhuan He Quanwen Li Bin Xia qinglun wang Yinghui Zhang School of Materials Science and Engineering TKL of Metal and Molecule-Based Material Chemistry Nankai University College of Chemistry Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University

A new metal-organic framework (MOF),{[Zn_7 (BPS)_4 (OH)_6 (H_2O)_2]·5 H_2O]_n}(1), (H_2 BPS=4,4′-bibenzoic acid-2,2′-sulfone), based on a wavy and infinite chain-shaped secondary building units, has been synthesized under solvothermal conditions and characterized by single crystal X-ray diffraction and further confirmed by PXRD, TGA and IR spectrum. The solid-state emission spectra reveal that compound 1 presents strong luminescence emission bands at room temperature. The fluorescent properties of compound 1 in diverse organic solvents indicated that 1 has palpable luminescent sense effects for DMF and DMAC.

关键词： Metal-organic frameworks Secondary building unit Solid-state emission spectra Fluorescent properties Luminescent sense effects

Two Cu(II)-Nitronyl Nitroxide Complexes Including Cyclic Dimer: Synthesis, Structures and Magnetic Interactions

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Open Journal of Inorganic Chemistry 2022年第4期12卷 57-69页

作者： Jing Chen Chenzhuo Liu Youjuan Zhang qinglun wang College of Chemistry Anyang Normal University Anyang China College of Chemistry Zhengzhou University Zhengzhou China College of Chemistry Nankai University Tianjin China

Using two new flexible and functional nitronyl nitroxide radicals as ligands, two copper (II) complexes {[Cu(hfac)2]3(NITmPhO3Py)2}n (1) and [Cu(hfac)2 (NIToPhO3Py)]2 (2) (NITmPhO3Py = 2-[(3-methoxy-pyridinyl)phen-3-yl]- 4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide, NIToPhO3Py = 2-[(3-methoxy-pyridinyl)phen-2-ly]-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide, hfac = hexafluoroacetylacetone), have been characterized structurally and magnetically. The X-ray crystal analyses showed that complex 1 displayed a chain polymer structure which formed with {[Cu(hfac)2]3(NITmPhO3Py)2}n due to the cross-linking of two cyclic binuclear fragments {[Cu(hfac)2]2(NITmPhO3- Py)2} via the bridging unit [Cu(hfac)2];complex 2 presented a binuclear cyclic structure [Cu(hfac)2]2(NIToPhO3Py)2. The magnetic behaviors of the two complexes 1 and 2 have been investigated. Magnetic studies showed that antiferromagnetic interactions dominated in complex 1, while there existed ferromagnetic interactions between Cu(II) and coordinated NO group in complex 2.

关键词： Flexible Nitronyl Nitroxide Cu(II) Complex Synthesis Characterization Magnetic Property

2p-3d-4f one-dimensionalcompound exhibiting slow magnetic relaxation behavior through the effect of strong anisotropic TbⅢions

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2p-3d-4f one-dimensionalcompound exhibiting slow magnetic re...

中国化学会第八届全国配位化学会议

作者： Binling Yao Dong Huang Hao Huang Yue Ma qinglun wang Licun Li Peng Cheng Department of Chemistry and Key Laboratory of Advanced Energy Materials Chemistry (MOE) and TKL of Metal and Molecule Based Material Chemistry University of Nankai

Metal-radical based complexes[1-3],especially 2 p-3 d-4 fhetero-tri-spin compounds[4],have attracted much attention due to their high ground states from the uncompensated spins and the novel properties which might be exerted withthe strong magnetic interactions between different *** are rarely reported because hetero-tri-spin systems are difficult to *** the best of our knowledge,there are only two approaches to construct 2 p-3 d-4 f complexes,and compared with using structurally robust d-f platform as building unit,utilizing the coordinate preference for 3 d and 4 f ions is easier to obtain structures as *** all hetero-tri-spin systems,nitronyl nitroxide based-3 d-4 f compounds play extremely important role in the field of molecular magnets,because the stable of the nitronyl nitroxide and versatile structures which are easy to be ***,in this paper we designed afunctional nitronyl nitroxide radical L(L = 2-(4-(5-methylcarbonyl-3-pyriyl)benzoxo)-4,4,5,5-tetra-methylimidazoline-l-oxyl-3-oxide)withpyridyl and N-Ogroups to prefer 3 d and 4 f metals respectively to obtain a new 2 p-3 d-4 fhetero-tri-spin one dimensional chain compound[Tb(hfac) Cu(hfac) L]·0.5 CH *** chain is constructed by Tb ions and Cu ions bridged by nitronyl nitroxide radical through N-O and pyridyl group *** magnetic study shows the slow magnetic relaxationbehaviors with energy barrier of 28.87 K.

关键词： Tri-hetero-spin 2p-3d-4f complex Slow magnetic behavior Nitronyl nitroxide radical Crystal structure

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单链磁体及其研究进展

化学进展 2005年第6期17卷 970-977页

作者：许公峰王庆伦廖代正杨光明南开大学化学系天津300071

单链磁体是继单分子磁体之后分子磁学领域的又一前沿课题。对其磁特性的研究不论是在基础理论方面还是在实际应用方面都具有非常重大的意义。本文较全面地介绍了现有单链磁体的种类、结构、磁学研究方法,并对其研究方向进行了展望。

关键词：单链磁体单分子磁体磁偶合分子磁学

2,3-戊烷二酮二肟双核铜配合物的合成、结构与性质研究

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南开大学学报（自然科学版） 2015年第5期48卷 27-32页

作者：赵志超王凯王振平杨春王庆伦马越河北工业大学化工学院天津300130 南开大学化学系金属与分子基材料化学天津市重点实验室天津300071

2,3-戊烷二酮二肟(PDOH_2)与Cu(Ⅱ)离子在氯离子存在下反应得到配合物[Cu_2(PDOH_2)_2Cl_2]Cl_2.晶体结构表明,配合物为氯离子桥联双核Cu(Ⅱ)配合物.配合物属于三斜晶系,a=0.779 42(16)nm,b=0.811 72(16)nm,c=0.832 82(17)nm,α=102.76... 详细信息

关键词： 2,3-戊烷二酮二肟双核铜配合物晶体结构磁性

锰(Ⅱ)-亚氨基二乙酸配位聚合物的合成、晶体结构及磁制冷性能研究

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南开大学学报（自然科学版） 2017年第1期50卷 86-89页

作者：张玉叶夏斌杨春王庆伦河北工业大学化工系天津300130 南开大学化学系天津300071

合成了1个锰(Ⅱ)-亚氨基二乙酸配位聚合物{Mn[(CH2COO)NH(CH2COOH)]2(H2O)2}n(1),通过X-射线衍射解析其晶体结构.该配合物属四方晶系,P 4ˉ21c空间群.晶胞参数a=0.809 7(3)nm,b=0.810 6(3)nm,c=0.953 2(3)nm;α=β=γ=90°.每个Mn(Ⅱ)离子与4个羧酸根上的氧原子和2个水分子的氧原子配位构成八面体构型,通过亚氨基二乙酸桥联成2维结构.配合物1的磁性研究表明它是一种很好的磁制冷材料.

关键词：磁制冷配位聚合物亚氨基二乙酸晶体结构

四自旋氮氧自由基-锰(Ⅱ)配合物的合成、结构和磁性质

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应用化学 2012年第12期29卷 1447-1451页

作者：高媛媛王超王亚丽马越王庆伦廖代正南开大学化学学院天津300071 南开大学天津市金属与分子基材料化学重点实验室天津300071 厦门大学固体表面物理化学国家重点实验室厦门361005

采用吡啶基取代的氮氧自由基4P4NIT与过渡金属锰(Ⅱ)离子进行配位,得到了1个双核的四自旋配合物{[Mn(hfac)2]2(4P4NIT)2}·CHCl3(其中,4P4NIT=2-(4'-(4″-吡啶基)苯基)-4,4,5,5-四甲基咪唑啉-3-氧化-1-氧基自由基,hfac=1,1,1,5,5,5-六氟乙酰丙酮阴离子)。X射线单晶衍射分析表明,2个4P4NIT自由基作为桥联配体,连接了2个Mn(hfac)2单元,形成双核四自旋配合物。变温磁化率研究表明,配合物中过渡金属Mn(Ⅱ)离子和直接配位的氮氧自由基之间存在着强反铁磁相互作用。

关键词：氮氧自由基锰(Ⅱ) 晶体结构磁性