3,4-吡啶二酸钡配合物的合成、结构、荧光和热稳定性研究

BaCl2.2H2O和配体3,4-吡啶二酸在溶剂热条件下反应生成了配合物[Ba2(pdc)2(H2O)3]n(1)(H2pdc=3,4-吡啶二酸),用单晶X-射线、元素分析和FT-IR对生成的晶体进行了表征。Ba1和Ba2分别采取了八配位扭曲四方反棱柱和十配位的双帽四棱柱几何构型,整个pdc2-作为四齿桥联配体连结4个不同的Ba(Ⅱ)原子形成二维网结构,O-H…N氢键将二维网结合在一起形成三维结构。还研究了配合物1的荧光和热重性质。     

3，4-吡啶二甲酸根钙配合物的合成、结构和性质

配体3,4-吡啶二酸(H2pdc)和CaCO3反应合成了配合物[Ca2(pdc)2(H2O)7](1),用单晶X-射线、FTIR和元素分析对生成的晶体进行了表征。Ca(Ⅱ)采取八配位扭曲四方反棱柱几何构型,整个pdc2-作为三齿桥联配体连结3个不同的Ca(Ⅱ)原子形成一维链结构,一维链由π-π相互作用和O-H…N氢键连结形成二维层,二维层再进一步由O-H…O氢键连结形成三维结构。还研究了配合物1的荧光和热重性质。CCDC:806131。     

基于1，4，5，8-萘四羧酸原位合成的钡配合物的结构、对芳香胺的检测及其作为纳米BaCO3的前驱体

以1,4,5,8-萘四羧酸为原料,在溶剂热条件下原位反应合成得到一个具有3D拓扑结构的发光钡基金属有机骨架(MOF):[Ba(dna)(H₂O)₂]n(1,H₂dna=1,8-萘二甲酸酐-4,5-二羧酸),并通过单晶X射线衍射、元素分析、热重分析和粉末X射线衍射技术对其进行表征。结构分析表明,1包含一个π共轭基团和酸酐基团的有机配体dna^2-,荧光和紫外研究表明其能灵敏地检测溶液中的芳香胺,可能是MOF结构中配体的酸酐基团和氨基之间的反应驱动的,这大大提高了荧光发射强度,并达到裸眼可见的颜色变化。此外,以配合物1为前驱体在中等温度下直接煅烧制得了单一晶型的纳米BaCO₃颗粒。     

3，5-二硝基苯甲酸镉配合物的合成、晶体结构、热稳定性和荧光性质

以3,5-二硝基苯甲酸,咪唑为配体,合成了新化合物[Cd(H₂O)₂(DNBA)(Im)₂](DNBA)·H₂O,(DNBA=3,5-二硝基苯甲酸阴离子)。该配合物属正交晶系,空间群为Ccc2,晶胞参数：a=1.324 99(4) nm,b=1.516 01(5) nm,c=2.789 22(8) nm;V=5.602 7(3) nm³,D_c=1.719 g·cm^-3,Z=8,μ=0.866 mm^-1,F(000)=2 912,最终偏离因子R₁=0.058 3,wR₂=0.146 4。该配合物中包含两个单核镉(Ⅱ)配合物,且配合物中还包含未配位的3,5-二硝基苯甲酸,金属中心均是六配位变形八面体结构。并测定和研究了标题化合物的热重和荧光性能。     

3,5-二硝基苯甲酸镉配合物的合成、晶体结构、热稳定性和荧光性质

以3,5-二硝基苯甲酸,咪唑为配体,合成了新化合物[Cd(H₂O)₂(DNBA)(Im)₂](DNBA)·H₂O,(DNBA=3,5-二硝基苯甲酸阴离子)。该配合物属正交晶系,空间群为Ccc2,晶胞参数:a=1.324 99(4) nm,b=1.516 01(5) nm,c=2.789 22(8) nm;V=5.602 7(3) nm³,D_c=1.719 g·cm^-3,Z=8,μ=0.866 mm^-1,F(000)=2 912,最终偏离因子R₁=0.058 3,wR₂=0.146 4。该配合物中包含两个单核镉(Ⅱ)配合物,且配合物中还包含未配位的3,5-二硝基苯甲酸,金属中心均是六配位变形八面体结构。并测定和研究了标题化合物的热重和荧光性能。     

PMBP缩4-甲基水杨酰肼铜、锌配合物: 合成、结构及锌配合物的荧光性质

合成并通过单晶衍射、元素分析、红外光谱表征了配合物[(Cu)(L)(Cl)]·0.5EtOH·1.5H₂O (1)和{[Zn(L)(NO₃)]·2CH₃CN}_n (2)的结构(HL为PMBP缩4-甲基水杨酰肼; PMBP=1-phenyl-3-methyl-4-benzoyl-5-pyrazolone)。单晶衍射结果表明, 配合物1中, Cu(Ⅱ)离子与来自烯醇化脱质子配体L^-的2个O原子和1个N原子,及1个氯离子配位, 采取扭曲的平面正方形配位构型。而配合物2中, Zn(Ⅱ)离子采取扭曲的三角双锥配位构型, 与来自L-的NO₂电子供体, 1个单齿配位的硝酸根和相邻配体吡唑啉酮N原子配位, 形成沿b轴方向的一维链状结构。在310 nm紫外光激发下, 配合物2在434和459 nm处有很强的荧光发射, 而配体的荧光发射峰在521 nm, 强度明显弱于配合物。此外, 固态配体和配合物2的荧光寿命分别为7.352 8和7.755 6 μs。     

PMBP缩4-甲基水杨酰肼铜、锌配合物:合成、结构及锌配合物的荧光性质

合成并通过单晶衍射、元素分析、红外光谱表征了配合物[(Cu)(L)(Cl)]·0.5EtOH·1.5H₂O (1)和{[Zn(L)(NO₃)]·2CH₃CN}_n (2)的结构(HL为PMBP缩4-甲基水杨酰肼; PMBP=1-phenyl-3-methyl-4-benzoyl-5-pyrazolone)。单晶衍射结果表明,配合物1中,Cu(Ⅱ)离子与来自烯醇化脱质子配体L^-的2个O原子和1个N原子,及1个氯离子配位,采取扭曲的平面正方形配位构型。而配合物2中,Zn(Ⅱ)离子采取扭曲的三角双锥配位构型,与来自L^-的NO₂电子供体,1个单齿配位的硝酸根和相邻配体吡唑啉酮N原子配位,形成沿b轴方向的一维链状结构。在310 nm紫外光激发下,配合物2在434和459 nm处有很强的荧光发射,而配体的荧光发射峰在521 nm,强度明显弱于配合物。此外,固态配体和配合物2的荧光寿命分别为7.352 8和7.755 6 μs。     

镉(Ⅱ)磺基水杨酸配合物的合成、结构和荧光性质

配体2,2′-联吡啶(bipy)、磺基水杨酸(H2hssal)和镉盐反应合成了配合物[Cd(hssal)(bipy)(H2O)2]·H2O(1),用单晶X-射线和元素分析对生成的晶体进行了表征,结构研究发现该晶体属于单斜晶系P21/c空间群。Cd(Ⅱ)采取八面体配位几何构型,磺基水杨酸作为二齿桥联配体连结不同的Cd(Ⅱ)原子形成一维链结构,一维链被O-H…O氢键连接形成二维层,再进一步由O-H…O氢键将二维层联结在一起形成三维结构。研究了配合物1的荧光性质。CCDC:772715。     

双环[2.2.1]-2-庚烯-5，6-二甲酸镍配合物的合成、晶体结构及热稳定性

The nickel complex Ni(phen)(H₂O)₃[C₈H₁₁O₂(COO)] has been synthesized with bicycle[2.2.1]hept-2-en-5,6-dicarboxylic acid [C₇H₈(COOH)₂] by means of solvent way. It crystallizes in the triclinic space group P1, with a=0.780 58(16) nm, b=1.189 9(2) nm, c=1.214 8(2) nm, α=66.20(3)°, β=88.28(3)°, γ=86.33(3)°, V=1.030 3(4) nm³, D_c=1.554 g·cm^-3, Z=2, F(000)=502. Final GOF=1.107, R₁=0.026 4, wR₂=0.070 2. The crystal structure shows that the nickel ion is coordinated with four oxygen atoms from one bicycle[2.2.1]-2-hepten-5,6-dicarboxylic acid molecule and three water molecules, respectively, with two nitrogen atoms from the 1,10-phenanthroline molecule, forming a distorted octahedral coordination geometry. The result of TG analysis shows that the title complex was stable under 210.0 ℃. CCDC: 741933.     

特戊酸和含氮配体构筑的Ln(Ⅲ)配合物的结构、热稳定性和荧光性质

在水热条件下2个配体特戊酸（pivH）和1-H-咪唑[4,5-f][1,10]-菲咯啉（IP）和稀土金属反应得到了6个稀土配合物[Ln（piv）₃（IP）₂], （Ln=Nd（1）, Eu（2）, Gd（3）, Tb（4）, Dy（5）, Ho（6））。结果显示,2个混合配体和不同的稀土金属形成了6个相似的零维结构,进而通过N-H…O氢键和π-π堆积作用,形成一维链状结构。6个配合物均用元素分析、粉末衍射（PXRD）、红外光谱（FTIR）进行了表征,且对配合物2和4的荧光性质及1和2的热稳定性进行了详细的分析。     

2,3-吡啶二酸钙配合物的合成及其晶体结构与荧光性质

2,3-吡啶二酸( H2pdc)与CaCO3反应制得配合物[Ca2pdc2 (H2O)8] (1),其结构经IR,元素分析及X-射线单晶衍射表征.1属三斜晶系,空间群P-1,晶胞参数a=7.880 8(2)(A),b=10.163 5(3)(A),c=13.7457(4)(A),α=80.427(2)°,β=87.855(2)°,γ=88.563(2)°,V=1 084.69(5)(A)3,Mr=554.50,Dc=1.698 g·cm-3,F(000) =288,μ=0.611 mm-1,Z=2,R=0.029 6,wR=0.085 0.1为之字形一维链结构,Ca(Ⅱ)中心采取七配位扭曲的五角双锥几何构型,配体pdc2 -作为μ2-桥连结2个Ca(Ⅱ)形成一维链,通过O -H----O氢键将一维链连结在一起形成二维层,进一步通过O -H----O氢键将二维层结合在一起形成三维结构.研究了1的荧光性能,结果表明,在326 nm激发波长激发下,1的最大发射峰位于402 nm.     

Synthesis, Structure and Physical Properties of a Barium（II） Complex with 5-Sulfoisophthalic Acid Sodium

An alkaline earth metal-organic framework [Ba(Hsip)(H2O)4]n (1, NaH2sip = 5-sulfoisophthalic acid sodium) has been constructed, and characterized by single-crystal X-ray diffraction. In complex 1, each Ba(II) atom coordinates to one ligand Hsip3- and four water molecules with a distorted nine-coordinated monocapped tetragonal antiprism geometry. Each Hsip2- anion acts as a μ3-bridging ligand, in which two carboxylate groups adopt the same bidentate chelating coordinating model and the sulfonate group takes a monodentate coordinating model, resulting in a wave-like two-dimensional network with a (6, 3) topological structure. The two-dimensional networks are further linked by O-H···O to form a three-dimensional structure. Luminescent property and thermal stability of complex 1 are investigated. 1 belongs to the orthorhombic system, space group Pna21 with a = 7.3333(2), b = 16.7044(3), c = 10.4817(2), Z = 4, V = 1283.99(5)3, Mr = 453.58, Dc = 2.346 g/cm3, F(000) = 880, μ = 3.314 mm-1, the final R = 0.0261 and wR = 0.0592 for 2425 observed reflections with I > 2σ(I).     

Synthesis,Structure, and Physical Properties of a Barium Complex with 5‐Sulfoisophthalic Acid Sodium Salt

The complex [Ba₃(sip)₂(H₂O)₉] · H₂O ( 1 ) (NaH₂sip = 5‐sulfoisophthalic acid sodium) was synthesized and characterized by single‐crystal X‐ray diffraction. Structural determination reveals that the asymmetric unit in 1 contains two crystallographically independent Ba^II atoms. The Ba1 atom is eight‐coordinate with distorted monocapped pentagonal bipyramidal arrangement, whereas the Ba2 atom is ten‐coordinated with bicapped tetragonal prismatic arrangement. The two carboxylate groups of sip^3– adopt different coordination modes, μ₂‐η¹:η¹‐bridging, and μ₂‐η²:η¹‐bridging. The sulfonate group coordinates to three different Ba^II atoms in a tridentate μ₃ mode to generate a ladder‐like one‐dimensional chain. The chains are connected by μ₂‐η¹:η¹‐bridging carboxylate groups to form a wave‐like two‐dimensional network, which are further linked by sip^3– anions to generate a three‐dimensional structure. The thermal stability and luminescence properties of complex 1 were also investigated.     

Hydrothermal Synthesis and Crystal Structure of a New Nickel（II） Complex with 3,4-Pyridinedicarboxylic Acid and 1,4-Bis（imidazol-l-ylmethyl）-benzene Ligands

A metal-organic coordination polymer [Ni(PDB)(bix)(H2O)]n(H2PDB=3,4-pyri-dinedicarboxylic acid, bix=1,4-bis(imidazol-1-ylmethyl)-benzene) 1 has been hydrothermally synthesized and characterized by elemental analysis, IR, TG and single-crystal X-ray diffraction. Blue crystals crystallize in the triclinic system, space group P1 with a=9.1849(8), b=9.2065(9), c=12.9308(12) , α=103.3070(10), β=104.7160(10), γ=90.5900(10)o, V=1026.42(16)3 , C21H19N5NiO5 , Mr=480.12, Dc=1.553 g/cm3 , F(000)=496, Z=2, μ(MoKα)=0.991 mm1 , the final R=0.0325 and wR=0.0799 for 3561 observed reflections (I>2 (I)). The structure of 1 exhibits a two-dimensional network structure.     

基于3，4'，5-联苯三羧酸构筑的钕配合物的合成、结构、荧光、光催化及磁性质

采用NdCl₃·6H₂O和3,4'',5-联苯三羧酸（H₃bpt）为原料在DMF/H₂O混合溶剂热条件下合成得到一个三维钕配合物{[Nd （bpt）（DMF）（H₂O）]·2H₂O}_n（1）,并通过红外光谱、元素分析、单晶及粉末X射线衍射表征了配合物1的结构。单晶衍射结果表明,配合物1具有（5,5）-连接的三维结构,拓扑符号为（4⁴·6³·8³）（4⁸ 6²）。此外,对配合物1的热稳定性、荧光性质、光催化降解染料及磁性质进行了详细研究。     

Hydrothermal Synthesis,Crystal Structure and Thermal Properties of a Novel Samarium Complex with 1D Nano-chain Structure

1 Introduction The design and construction of metal-organic polymers has been a field of rapid growth in materials chemistry because of their intriguing topologies and potential applications as functional materials[1―6]. In     

Cadmium Iodide Complex with 4-Aminomethylbenzoic Acid: Synthesis,Crystal Structure,and Luminescent Properties

[СdI₂(4-АmbaH)₂] · H₂O has been synthesized by the reaction between CdI₂ and 4-aminomethylbenzoic acid (4-AmbaH) in an aqueous solution. According to X-ray diffraction data, a 4-AmbaH aromatic molecule crystallizes in the form of a zwitterion with protonation of the NH ₃ ⁺ amino group and deprotonation of the carboxylate group, which is chelately coordinated to the Cd²⁺ ion. In addition to two iodine atoms, the Cd²⁺ atom located on the double crystallographic axis is coordinated to the chelate carboxylate O(1) and O(2) atoms of two crystallographically equivalent ligands 4-AmbaH. The octahedral geometry of the Cd²⁺ ion is strongly distorted due to the chelate addition of 4-AmbaH. The chelate coordination of COO–groups is confirmed by IR spectroscopy data. The complex has luminescent properties.