3,3''-(吡啶-3,5)二苯甲酸构筑的Co(Ⅱ)/Ni(Ⅱ)配合物的合成、晶体结构及性质

设计、合成了2个配合物：{[Co₂（pddb）₂（μ₂-H₂O）（H₂O）₂]·2DMA·5H₂O}_n（1）和{[Ni₂（pddb）₂（μ₂-H₂O）（H₂O）₂]·2DMA·5H₂O}_n（2）（H₂pddb=3，3''-（吡啶-3，5）二苯甲酸，DMA=N，N-二甲基乙酰胺），并通过红外光谱（IR），元素分析，热重分析（TG）和单晶X射线衍射确定它们的结构。结构分析表明1和2是异质同构的，其空间构型可简化成（3，6）连接的拓扑结构，其符号为（4²·6）·（4⁴·6²·8⁸·10）。进一步研究了配合物1和2的固体紫外、磁性及其催化性能。研究表明1和2中的中心金属离子之间存在反铁磁耦合作用，并且1可以作为C-H活化的高效非均相催化剂。     

大环超分子二(三环己基锡)吡啶-二甲酸酯的合成、结构和抗癌活性

在微波溶剂热中,三环己基氢氧化锡分别与2,6-H_2pydc和3,5-H_2pydc(H_2pydc=吡啶二甲酸)反应,合成了4个二(三环己基锡)吡啶-二甲酸酯:{[(2,6-Hpydc)SnCy_3]·MeOH}_n(1)、[(2,6-pydc)Sn_2Cy_6(H_2O)]·PhH(2)、[(3,5-pydc)Sn_2Cy_6(MeOH)]·MeOH(3)和[(3,5-pydc)Sn_2Cy_6(H_2O)]·EtOH(4)。对它们的组成和结构进行了元素分析、IR、(1H,13C和119Sn)NMR和单晶X射线衍射表征。化合物中心锡与配基原子构成畸形四、六面体构型,由于氢键作用,化合物形成二维大环网状超分子结构。初步探索了1、3对人结肠癌(HT-29)、肝癌细胞(HepG2)、乳腺癌(MCF-7)、鼻咽癌(KB)和肺癌细胞(A549)的增殖抑制活性,结果表明化合物具有广谱和较强的抗癌作用。     

基于柔性双吡啶双酰胺和两种不同多羧酸配体的三个Cu（Ⅱ）/Co（Ⅱ）配位聚合物：组装、结构和性质

通过水热合成得到3个有机金属配位聚合物,即[Cu（1,2-BDC）（L）]（1）,[Cu（HBTC）（L）]·2H₂O（2）,[Co（HBTC）（L）]·H₂O（3）,（L=N,N-双（3-氨基吡啶）乙二酰胺,1,2-H₂BDC=1,2-邻苯二甲酸和H₃BTC=1,3,5-均苯三甲酸）。配合物1是基于1D[Cu-1,2-BDC]_n和[Cu-L]_n链形成的一个3DCdSO₄-型拓扑结构。配合物2~3是同构的,均显示出2D双层（3,5）-连接的{4²·6⁷·8}{4²·6}拓扑结构。相邻的2D双层网络通过分子间的氢键（配合物2）和π-π堆积（配合物3）作用进一步拓展成3D超分子框架。我们对芳香羧酸和中心金属离子对配合物结构的影响进行了详细的讨论。此外,还研究了配合物1~3的电化学性质和固态荧光性质。     

由芳香羧酸和4,4'-二(1-咪唑基)苯砜为配体构筑的两个配合物的合成、晶体结构及荧光性质

通过水热法得到了2个配位聚合物{[Cd（L）（oba）]·3.5H₂O}_n （1）和{[Cd（L）₂]（p-bdc）}_n （2）（L=4,4＇-二（1-咪唑基）苯砜,H₂oba=4,4＇-联苯醚二甲酸,p-H₂bdc=对苯二甲酸）,对它们进行了元素分析、红外光谱分析,并利用X射线衍射测定了它们的单晶结构。晶体结构分析表明,配合物1具有四连接二重穿插的三维网络结构,其拓扑为{6⁵·8}。配合物2具有四连接的二维结构,其拓扑为{4⁴·6²}。此外,在室温下对2个配合物进行了荧光分析。     

氰基桥联的Fe2Ni双之字链的合成与磁性

利用四氰基构筑单元和不同位阻的吡啶类配体,合成了3例氰基桥联的Fe₂^ⅢNi^Ⅱ链状化合物。化合物{[Fe（bpy）（CN）₄]₂[Ni（bp）₂]·2H₂O}_n（1）（bpy=2,2''-联吡啶;bp=4-苯基吡啶）,{[Fe（bpy）（CN）₄]₂[Ni（papy）₂]·H₂O}_n（2）（papy=4-（苯基氮烯）吡啶）和{[Fe（bpy）（CN）₄]₂[Ni（azp）]·4H₂O}_n（3）（azp=1,2-二（吡啶-4-基）二氮烯）均为双之字型的链状结构。磁性测试表明化合物1~3均表现为链内的铁磁相互作用。化合物1表现出单链磁体行为,有效能垒为10.9 K。     

以4，4''-二(1-咪唑基)苯砜或4，4''-二(1-咪唑基)苯硫醚为配体的配位聚合物的合成、晶体结构及性质

通过水热法合成并表征了3个基于V型配体构筑的新颖配位聚合物{[Cd（BIDPS）（PA）（H₂O）]·CH₃OH}_n（1）、{[Zn（BIDPS）（p-bdc）]·H₂O}_n（2）和[Mn（BIDPT）（NBA）]_n（3）（BIDPS=4,4''-二（1-咪唑基）苯砜,H₂PA=帕莫酸,p-H₂bdc=对苯二甲酸,BIDPT=4,4''-二（1-咪唑基）苯硫醚,H₂NBA=4,4''-氮杂二基二苯甲酸）。单晶结构分析表明化合物1和2具有二维网络结构,化合物1进一步通过倾斜穿插形成三维结构,化合物2通过分子间氢键形成了三维网络结构。化合物3属于3-连接六边形的蜂窝状结构,通过C—H …π作用形成三维超分子结构。化合物1和2在水中具有很好的稳定性和荧光性质,可作为高灵敏度、高选择性荧光探针检测水溶液中的Fe³⁺和Cr₂O₇^2-,并能抵抗多种竞争离子的干扰。同时研究了其对Fe³和Cr₂O₇^2-的荧光猝灭机理。     

2，7-萘二磺酸导向构筑的五元瓜环-碱金属及碱土金属基超分子自组装体及其溶剂识别

以2,7-萘二磺酸（2,7-H₂NDA）作为结构导向剂,与五元瓜环（Q[5]）和碱金属、碱土离子（K⁺、Rb⁺、Mg²⁺、Ca²⁺）在水热条件下制备出了4种新颖的Q[5]基超分子自组装体[K₂（H₂O）₄（Q[5]）]（2,7-NDA）·4H₂O （1）、[Rb₂（H₂O）₅（Q[5]）]（2,7-NDA）·3H₂O （2）、[Mg （H₂O）₄（Q[5]）]（2,7-NDA）·8H₂O （3）和[Ca （H₂O）₄（Q[5]）]（2,7-NDA）·10H₂O （4）。单晶X射线衍射测试结果表明,自组装体1和2具有相同的结构： Q[5]分子与金属离子配位形成的是“分子胶囊”;而在3中Q[5]与Mg²⁺配位形成的是1：1型简单配合物结构;在自组装体4中,Q[5]与Ca²⁺配位形成的是一维Q[5]-Ca²⁺配位聚合物链结构。这些结构中2,7-NDA^2-阴离子平衡了体系电荷,且通过其与瓜环外壁之间的弱相互作用,促进自组装体最终构筑成三维超分子结构。此外,还研究了自组装体4的溶剂识别荧光传感性能,结果表明其能够作为有机溶剂丙酮和DMF的猝灭型荧光探针。     

基于H3PW12O40·xH2O和3，5-二氨基-1，2，4-三氮唑的POMOF的合成、表征及催化氧化碘离子性能

采用水热法合成了一例结构新颖且罕见的Keggin型多金属氧酸盐基金属有机骨架化合物,即[Cu₄（3,5-datrz）₄][PW^Ⅵ₉W^Ⅴ₃O₃₉]·H₂O （1）,其中3,5-datrz=3,5-二氨基-1,2,4-三氮唑,并通过单晶X射线衍射、傅里叶变换红外光谱、热重分析、粉末X射线衍射和元素分析进行了表征。单晶X射线衍射分析表明：化合物1属于单斜晶系,空间群为C2/c,不对称结构包含2个Cu⁺、2个3,5-datrz配体、0.5个Keggin型磷钨酸阴离子和1个水分子,除结晶水外各组分之间通过共价键连接成Keggin型多金属氧酸盐基金属有机骨架化合物。以化合物1为非均相催化剂,在温度为55℃时催化H₂O₂氧化碘离子反应。结果表明,1催化下的碘单质生成速率为6.11×10^-7 mol·L^-1·s^-1,且重复使用次数达到6次时转化率仍能高达99.6%。     

2，6-二乙酰吡啶缩水杨酰腙衍生物的锰和镧配合物的合成、晶体结构及抗肿瘤活性

设计并合成了2,6-二乙酰吡啶缩水杨酰腙衍生物（2,6-（（o-OH） C₆H₄C=ONHN=C （CH₃））₂C₅H₃N,H₄L）及其锰配合物[Mn （H₂L）（DMSO）₂]（1）和镧配位聚合物{[La （H₂L）₂]₂[La₂（H₂L）₂（DMF）₅（H₂O）]·2DMF·2H₂O}_n（2）（DMSO=二甲基亚砜,DMF=N,N-二甲基甲酰胺）。配合物1和2的结构分别通过红外光谱、紫外可见光谱、元素分析进行了表征,并经单晶X射线衍射进一步确证。晶体结构分析表明配合物1属于正交晶系的P2₁2₁2₁空间群;配位聚合物2结晶于三斜晶系的P1空间群。用CCK-8法检测了1和2对体外结肠癌细胞HCT116和结直肠腺癌上皮细胞DLD-1的增殖抑制作用,结果表明1和2对HCT116和DLD-1细胞都有中等抑制作用：1的IC₅₀分别为（23.69±1.226）μmol·L^-1和（41.06±1.013）μmol·L^-1;2的IC₅₀分别为（57.61±1.034）μmol·L^-1和（61.36±1.029）μmol·L^-1。     

金属氯化物-苯并噻唑有机-无机杂化化合物的合成、表征及荧光性质

金属卤化物MCl₂（M=Pb²⁺,Cd²⁺,Co²⁺）分别与苯并噻唑（btz）在浓盐酸中、80 ℃下反应,合成了3种有机-无机杂化化合物：（btzH）[（PbCl₃）] （1）,（btzH）₂[CdCl₄]·2H₂O （2）和（btzH）₂[CoCl₄]·2H₂O （3）,其中化合物2和3结构相似。对化合物1~3进行了粉末衍射、红外和紫外光谱、元素分析、热重分析以及X射线单晶衍射表征。荧光测试发现：化合物1~3在393 nm处有发射峰,该荧光来源于苯并噻唑环中电子的π…π跃迁。     

A series of three-dimensional 3d–4f heterometallic coordination frameworks based on pyridinedicarboxylic acid

Four new 3d–4f heterometallic coordination polymers [Cu₃Eu₂(2,5-pydc)₆(H₂O)₁₂]·4(H₂O) (1), [Zn₂Eu₂(2,5-pydc)₅(H₂O)₂]·3(H₂O) (2), and [Co₃Ln₂(2,6-pydc)₆(H₂O)₆]·4(H₂O) (Ln = Eu, 3; Dy, 4) (H₂pydc = pyridinedicarboxylic acid) have been synthesized and characterized. All of these compounds have extended 3D coordination frameworks containing supramolecular 1D channels, in which lattice water molecules are located. Hydrogen bonds stabilize the 3D frameworks. Additionally, a study of their fluorescence properties has indicated that compounds 1 and 2 show the characteristic transitions of Eu³⁺. Weak antiferromagnetic interactions are observed in compound 3.     

Hexaaquacobalt(II) and hexaaquanickel(II) bis(μ‐pyridine‐2,6‐dicarboxylato)bis[(pyridine‐2,6‐dicarboxylato)bismuthate(III)] dihydrate

The title complexes, hexaaquacobalt(II) bis(μ‐pyridine‐2,6‐dicarboxylato)bis[(pyridine‐2,6‐dicarboxylato)bismuthate(III)] dihydrate, [Co(H₂O)₆][Bi₂(C₇H₄NO₄)₄]·2H₂O, (I), and hexaaquanickel(II) bis(μ‐pyridine‐2,6‐dicarboxylato)bis[(pyridine‐2,6‐dicarboxylato)bismuthate(III)] dihydrate, [Ni(H₂O)₆][Bi₂(C₇H₄NO₄)₄]·2H₂O, (II), are isomorphous and crystallize in the triclinic space group P. The transition metal ions are located on the inversion centre and adopt slightly distorted MO₆ (M = Co or Ni) octahedral geometries. Two [Bi(pydc)₂]⁻ units (pydc is pyridine‐2,6‐dicarboxylate) are linked via bridging carboxylate groups into centrosymmetric [Bi₂(pydc)₄]²⁻ dianions. The crystal packing reveals that the [M(H₂O)₆]²⁺ cations, [Bi₂(pydc)₄]²⁻ anions and solvent water molecules form multiple hydrogen bonds to generate a supramolecular three‐dimensional network. The formation of secondary Bi...O bonds between adjacent [Bi₂(pydc)₄]²⁻ dimers provides an additional supramolecular synthon that directs and facilitates the crystal packing of both (I) and (II).     

Fe(III) and cobalt(II) coordination compounds of 5-bromo-6-methyl-2-morpholinepyrimidinium-4-amine pyridine-2,6-dicarboxylate

New coordination compounds, (bmmpaH)[Fe(pydc)₂] · (EtOH)_0.8(H₂O)_0.2 (1), (8QH)[Fe(pydc)₂] · H₂O (2), (2ampyH)₂[Mn(pydc)₂] · H₂O (3), (2ampyH)[Cr(pydc)₂](2ampy)_0.5 · H₂O (4), [Co(H₂O)₅-μ-(pydc)Co(pydc)] · 2H₂O (5), [Ni(pydcH)₂] · H₂O (6), and [Cu(pydcH)₂] (7), where bmmpa, 8Q, 2ampy, pydcH₂ are 5-bromo-6-methyl-2-morpholinepyrimidine-4-amine, 8-hydroxyquinoline, 2-amino-6-methylpyridine, and pyridine-2,6-dicarboxylic acid, respectively, have been synthesized and structurally characterized by elemental analyses, infrared, UV spectroscopic methods, and X-ray crystallography. Metal ions of 1 and 5 are six-coordinate with distorted octahedral geometries. Compound 1 is an anionic mononuclear complex and 5 is a binuclear compound constructed from cationic and anionic parts. The crystal data of 5 reveal that the cationic part is formed by five terminal waters and one μ-carboxylate oxygen O2 from the anionic portion and the anionic complex is built from two deprotonated (pydc)^2? moieties. In the compounds, pydcH₂ is tridentate by one nitrogen of pyridine ring and two oxygens of carboxylate.     

Thermal and photoinduced valence tautomerism of a chain compound

Herein reported is an example of one-dimensional coordination polymer [CoII(3,5-DBsq)2(dpg)]·(3,5-H2DBcat)2 (1) (3,5-DBsq = 3,5-di-tert-butylsemiquinonate, 3,5-H2DBcat = 3,5-di-tert-butyl-benzene-1,2-diol, dpg = meso-alpha,beta-di(4-pyridyl)glycol) capable of undergoing thermal and photoinduced valence tautomeric transitions.     

Ag(I)配位聚合物[Ag2(bpp)2(H2O)]·pydc·7H2O的合成、表征及性质研究

水热合成了基于吡啶-3,5-二羧酸(H2pydc)的含Ag(I)配位聚合物 [Ag2(bpp)2(H2O)]·pydc·7H2O (1) (其中bpp = 1,3-双(4-吡啶)丙烷)。X射线单晶结构分析表明,在一维化合物1中,发现了包含(H2O)12水簇单元的二维氢键层状结构。有趣的是,在该二维层中, 每个pydc2-阴离子作为“桥”连接了两个(H2O)12单元和两个自由水分子。另外,对化合物1的荧光、热重、粉末衍射等也进行了研究和讨论。     

含苯并咪唑基配体Zn(Ⅱ)、Cd(Ⅱ)配位聚合物的合成、结构以及荧光性质研究

以3,5-二(苯并咪唑基)吡啶(L)、间苯二甲酸(m-H₂BDC)、4-羧基肉桂酸(H₂CCA)、ZnSO₄·7H₂O和Cd(NO₃)₂·4H₂O为原料,使用溶剂热方法合成了两个配位聚合物[Zn(L)(m-BDC)] (1)和[Cd(L)(CCA)]·2H₂O (2),利用红外、元素分析、热重分析和X-射线粉末衍射对其进行了表征,利用X-射线单晶衍射对结构进行了测定,并研究了配合物的荧光性质。在配合物1中,L与金属离子连接形成了一维(1D)链结构,而间苯二甲根离子与金属离子构成了一个M₂(m-BDC)₂(M=金属离子)的单元。一维链之间通过M₂(m-BDC)₂单元连接形成二维网状(2D)结构。在配合物2中,和配合物1类似,L与金属离子连接形成一维链,但与1不同的是羧酸配体与金属离子配位也构成了一维链结构,两种一维链通过配位作用连接构成二维结构。     

Novel Complexes of Gallium(III), Indium(III), and Thallium(III) with Pyridine‐Containing Proton Transfer Ion Pairs Obtained from Dipicolinic Acid – Synthesis,Characterization and X‐ray Crystal Structure

Three new complexes of group thirteen metals, gallium(III), indium(III), and thallium(III) with proton transfer compounds, obtained from 2,6‐pyridinedicarboxylic acid (dipicolinic acid), were synthesized and characterized using elemental analysis, IR, ¹H and ¹³C NMR spectroscopy and single crystal X‐ray diffraction. The gallium(III) and indium(III) complexes were prepared using (pydaH₂)(pydc) (pyda = 2,6‐pyridinediamine, pydcH₂ = dipicolinic acid) and thallium(III) complex was obtained from (creatH)(pydcH) (creat = creatinine). The chemical formulae and space groups of the complexes are (pydaH)[Ga(pydc)₂] · 3.25H₂O · CH₃OH, ( 1 ), [In(pydc)(pydcH)(H₂O)₂] · 5H₂O, Pna2₁ ( 2 ) and [Tl₂(pydcH)₃(pydc)(H₂O)₂], ( 3 ). Non‐covalent interactions such as ion‐pairing, hydrogen bonding and π‐π stacking are discussed. The complexation reactions of pyda, pydc, and pyda + pydc with In³⁺ and Ga³⁺ ions in aqueous solution were investigated by potentiometric pH titrations, and the equilibrium constants for all major complexes formed are described.     

Synthesis,characterization, and biological activities of macrocyclic polyamine complexes

Two new dinuclear macrocyclic complexes, [Ni₂L¹(OAc)]·ClO₄ (1) and [Co₂L²(OAc)]·1.5(ClO₄)·0.5Na·2(CH₃OH) (2) (where H₂L¹ and H₂L² are the condensation products of N,N-bis(3-aminopropyl)-4-methoxybenzylamine with 2,6-diformyl-4-brominephenol and 2,6-diformyl-4-methylphenol in the presence of metal ions, respectively) have been synthesized and characterized by infrared spectra, elemental analysis, electrospray mass spectra, and X-ray single crystal diffraction. The interactions of the complexes with CT-DNA have been measured by UV-absorption titrations and fluorescence quenching experiments.     

Synthesis,structures and thermal properties of Cu(II) and Ni(II) complexes containing diethylenetriamine and nicotinate ligands

The syntheses and crystal structures of four new divalent transition metal complexes of the types [Cu₂(dien)₂(nic)](ClO₄)₃ · MeOH (nic = anion of nicotinic acid; dien = diethylenetriamine), 1; [Cu(dien)(nic)]₂(nic)₂, 2; [Cu(dien)(nic)]₂(BF₄)₂ · 2MeOH, 3 and [Ni(dien)(nic)(H₂O)]₄(NO₃)₄ · 2MeOH, 4, are reported, which were prepared by the reactions of diethylenetriamine and nicotinic acid with Cu(ClO₄)₂ · 6H₂O, Cu(OAc)₂ · H₂O, Cu(BF₄)₂ · 6H₂O and Ni(NO₃)₂ · 6H₂O in MeOH, respectively. These complexes were characterized by single-crystal X-ray diffraction method and elemental analyses. In the cation of complex 1, one nicotinate ligand bridges two Cu(II) metal centers through the pyridyl nitrogen atom and one of the carboxylate oxygen atoms. The cations of complexes 2 and 3 form the twelve-membered metallocycles, involving two Cu(II) ions that are bridged by two nicotinate ligands. The cation of complex 4 forms a tetranuclear cage with the four Ni(II) metal centers bridged by four nicotinate ligands and each Ni(II) metal center adopts the distorted octahedral geometry. Their thermal properties have been investigated by using differential scanning calorimetry (DSC) and thermogravimetric analyses (TGA).