Dianilineglyoxime Salt and Its Binuclear Zn(II) and Mn(II) Complexes with 1,3-Benzenedicarboxylic Acid: Synthesis and Structures

Russian Journal of Coordination Chemistry - Single crystals of dianilineglyoxime (DAnH2) in the form of hydrate salts [DAnH3](ClO4) ? H2O (I) and [DAnH3](ClO4) ? 1.25H2O (II) are...     

Zn(II) and Co(II) 3D Coordination Polymers Based on 2-Iodoterephtalic Acid and 1,2-bis(4-pyridyl)ethane: Structures and Sorption Properties

Metal-organic frameworks [M₂(2-I-bdc)₂bpe] (M = Zn(II) (1), Co(II) (2), 2-I-bdc = 2-iodoterephtalic acid, and bpe = 1,2-bis(4-pyridyl)ethane) were prepared and characterized by X-ray diffractometry. Both compounds retain their 3D structure after the removal of guest DMF molecules. Selectivity of sorption of different organic substrates from the gas phase was investigated for both complexes.     

Synthesis,Structures, Thermal and Luminescence Properties of Zn and Cd Halide Coordination Polymers with 2-Cyanopyrazine

Reaction of MX₂ (M = Cd, Zn; X = Cl, Br, I) with 2-cyanopyrazine leads to the formation of compounds with the composition CdX₂(2-cyanopyrazine)₂ (X = Cl; CdCl , X = Br; CdBr and X = I; CdI ) and ZnX₂(2-cyanopyrazine)₂ (X = Cl; ZnCl , X = Br; ZnBr and X = I; ZnI/I ). In the crystal structures of the Cd compounds and in ZnCl , the metal cations are octahedrally coordinated and are linked into chains by the halide anions via common edges. In contrast, in the crystal structures of ZnBr and ZnI/I the metal cations are tetrahedrally coordinated into discrete complexes. Further investigations show that a second modification of ZnCl₂(2-cyanopyrazine)₂ exists ( ZnI/II ), which is formed by kinetic control. The thermal properties of the 2-cyanopyrazine rich compounds were investigated by TG-DTA and temperature dependent XRPD measurements. Upon heating the Cd compounds, all 2-cyanopyrazine ligands are removed in a single step with no indication of the formation of a 2-cyanopyrazine deficient phase. A similar behavior is observed for ZnI , whereas for ZnCl and ZnBr , TG-DTA measurements suggest the formation of a 2-cyanopyrazine deficient phase that, in case of ZnBr , cannot be isolated and, for ZnCl , cannot be obtained pure. The emission of these compounds is shifted from the blue to orange depending on the crystal structure and the nature of the halide anion.     

Solvothermal Synthesis of New Luminescent Zinc(II) Coordination Polymers with One‐Dimensional Homochiral Structures

By using a dual‐ligand approach, two new homochiral zinc(II) coordination polymers, Zn₂(phen)₂(H₂O)₂(cam)₂ · ethanol ( 1 ) and Zn(bipy)(cam) ( 2 ) [phen = 1,10‐phenanthroline, bipy = 2,2′‐bipyridine, H₂cam = (1R,3S)‐(+)‐camphoric acid] have been synthesized under solvothermal conditions. Compound 1 has a zigzag chain‐like structure and compound 2 has a linear chain‐like structure. The two compounds exhibit intense photoluminescence upon photoexcitation at 280 and 290 nm, respectively.     

Syntheses and Crystal Structures of Cobalt(II) and Nickel(II) Coordination Polymers with 3-Aminobenzoic Acid Ligand

1 INTRODUCTION Much research interest has been focused on metal- organic coordination polymers in past years because of the structural and topological novelty of these compounds and their potential applications as func- tional materials, such as catalyst, ion-exchange, gas sorption, optical material and molecule-based ma- gnet[1~6]. In this field, many organic bridging ligands such as bipyridine, polyaromatic carboxylate and re- lated species have been used to produce various types of met…     

含2,3-吡嗪二羧酸的镉配位聚合物的合成、晶体结构和荧光性质

在水溶液中合成了含2,3-吡嗪二羧酸配体的3个镉配位聚合物,{[Cd(pzdc)(2,2′-bpy)]·H₂O}_n(1),{[Cd(pzdc)(2,2′-bpy)]2H₂O}_n (2)和{[Cd(pzdc)(H₂O)₂]·2H₂O}_n (3)。配合物1属单斜晶系,P2₁/c空间群;配合物2为单斜晶系,P2₁/n空间群;配合物3为单斜晶系,P2₁/c空间群。每个pzdc配体通过4个配位原子与3个金属Cd配位,在配合物1和2中形成了具有(4,8²)网格状的二维平面构型,而在配合物3中得到了一维链状和氢键3D网络结构。尽管配合物1和2的分子只是结晶水分子数目存在差异,且具有相同的(4,8²)网格状二维平面构型,但是他们的分子结构趋向存在很大差别。配合物1和3的荧光光谱均在415 nm处出现较强的发射峰。     

Coordination Polymers of Ni(II) with Thiophene Ligands: Synthesis,Structures, and Magnetic Properties

Russian Journal of Coordination Chemistry - Two new metal-organic frameworks [Ni(btdc)(bipy)(H2O)2] (I) and [Ni(azobipy)(H2O)4](btdc) (II) (H2btdc is 2,2'-bithiophene-5,5'-dicarboxylic...     

Novel Zn and Cd Coordination Polymers Assembled from Imidazole-based Zwitterionic Ligands: Synthesis,Crystal Structures,and Luminescence Properties

Russian Journal of Coordination Chemistry - Two transition-metal coordination polymers {[Zn2(L)2(HCOO)2]}n (I) and {[Cd2(L)3(HCOO)] ? 2H2O}n(II) (L =...     

基于2-(4'-羧基苯基)咪唑-4,5-二羧酸构筑的三个镉/锌配位聚合物的合成、拓扑结构、荧光光谱及DNA作用

以2-（4''-羧基苯基）咪唑-4,5-二羧酸（H₄CPhIDC,C₁₂H₈N₂O₆）为配体,用溶剂热合成了3种配位聚合物{[Cd₂（CPhIDC）（bimb）]·H₂O}_n（1）、{[Cd₂（CPhIDC）（phen）₂]·3H₂O}_n（2）、{[Zn₂（CPhIDC）（bpp）]·1.5H₂O}_n（3）（bimp=1,4-双咪唑基-丁烷,phen=1,10-菲咯啉,bpp=1,3-双（4-吡啶基）-丙烷）。用元素分析、红外光谱、粉末X射线衍射和单晶X射线衍射对配合物进行了表征和结构分析。结构分析表明,主配体以完全去质子化CPhIDC^4-的形式与中心金属离子形成以μ₄和μ₅为配位模式的二维及三维聚合物。配合物1和3是三维网络结构,同时呈现（3,4,5）-连接的（5·6·7）（4·5²·6·7²）（4·5²·6·7⁴·8²）拓扑结构,两者的不同之处是中心离子和辅助配体。配合物2是二维波纹状渔网结构,呈现4⁴·6²拓扑结构,在其空间填充上又类似于DNA双螺旋链的单螺旋结构。测定了产物的固体荧光光谱;用EtBr荧光探针法研究了配体及配合物与ct-DNA的相互作用。     

Coordination Polymers of Zn and Cd Based on Two Isomeric Azine Ligands: Synthesis,Crystal Structures,and Luminescence Properties

Russian Journal of Coordination Chemistry - Metal-organic 1D coordination polymers of Zn(II) and Cd(II), [{Zn(3-Bphz)(H2O)4}(3-Bphz)(NO3)2]n (I), [Zn(3-Bphz)I2]n (II), [Cd(3-Bphz)I2]n (III),...     

Two New Cd(II) Coordination Polymers Based on Triazolyl Derivative and Different Carboxylate Ligands,Their Crystal Structures and Properties

Russian Journal of General Chemistry - Two new mixed-ligand coordination polymers of Cd(II), namely, [Cd(H2L)(ip)H2O]n (1) and [Cd(H2L)(Hbtc)]n (2) [H2L =...     

两个以3-硝基邻苯二甲酸为配体构筑的锌和钴配位聚合物的合成、晶体结构和性质

通过水热法合成了2种配位聚合物{[Zn(3-Nbdc)(bpmp)]·H₂O}_n (1)和{[Co(3-Nbdc)(bpmp)(H₂O)]·H₂O}_n (2)(3-Nbdc^2-=3-硝基邻苯二甲酸根, bpmp=1, 4-二(4-吡啶甲基)哌嗪), 并通过X-射线单晶衍射、元素分析和红外光谱对其结构进行了表征。配合物1和2均为二维(4, 4)格子层结构, 其中1含有双核单元, 2含有螺旋金属羧酸链。此外, 对它们的热重、粉末X-射线衍射、固体荧光和磁性性能进行了考察。1显示与游离的3-硝基邻苯二甲酸相似的荧光性质, 锌离子的配位环境和配体之间的耦合作用对其荧光性能几乎没有影响。2在低温区表现出铁磁耦合作用, 高温区的χ_MT值降低主要是由于八面体钴的自旋轨道耦合导致的。     

两个以3-硝基邻苯二甲酸为配体构筑的锌和钴配位聚合物的合成、晶体结构和性质

通过水热法合成了2种配位聚合物{[Zn(3-Nbdc)(bpmp)]·H₂O}_n (1)和{[Co(3-Nbdc)(bpmp)(H₂O)]·H₂O}_n (2)(3-NbdC₂-=3-硝基邻苯二甲酸根, bpmp=1, 4-二(4-吡啶甲基)哌嗪), 并通过X-射线单晶衍射、元素分析和红外光谱对其结构进行了表征。配合物1和2均为二维(4, 4)格子层结构, 其中1含有双核单元, 2含有螺旋金属羧酸链。此外, 对它们的热重、粉末X-射线衍射、固体荧光和磁性性能进行了考察。1显示与游离的3-硝基邻苯二甲酸相似的荧光性质, 锌离子的配位环境和配体之间的耦合作用对其荧光性能几乎没有影响。2在低温区表现出铁磁耦合作用, 高温区的χ_MT值降低主要是由于八面体钴的自旋轨道耦合导致的。     

Crystal Engineering of Schiff Base Zn(II) and Cd(II) Homo- and Zn(II)M(II) (M = Mn or Cd) Heterometallic Coordination Polymers and Their Ability to Accommodate Solvent Guest Molecules

Based on solvothermal synthesis, self-assembly of the heptadentate 2,6-diacetylpyridine bis(nicotinoylhydrazone) Schiff base ligand (H₂L) and Zn(II) and/or Cd(II) salts has led to the formation of three homometallic [CdL]_n (1), {[CdL]∙0.5dmf∙H₂O}_n (2) and {[ZnL]∙0.5dmf∙1.5H₂O}_n (3), as well as two heterometallic {[Zn_0.75Cd_1.25L₂]∙dmf∙0.5H₂O}_n (4) and {[MnZnL₂]∙dmf∙3H₂O}_n coordination polymers. Compound 1 represents a 1D chain, whereas 2–5 are isostructural and isomorphous two-dimensional structures. The entire series was characterized by IR spectroscopy, thermogravimetric analysis, single-crystal X-ray diffraction and emission measurements. 2D coordination polymers accommodate water and dmf molecules in their cage-shaped interlayer spaces, which are released when the samples are heated. Thus, three solvated crystals were degassed at two temperatures and their photoluminescent and adsorption–desorption properties were recorded in order to validate this assumption. Solvent-free samples reveal an increase in volume pore, adsorption specific surface area and photoluminescence with regard to synthesized crystals.     

Synthesis and Characterization of Zn(II) and Cd(II) Complexes with Bisdithiophosphonates

2,4-Bis(4-methoxyphenyl)-1,3,2,4-dithiodiphosphetane-2,4-disulfide (Lawessons reagent) reacts with stoichiometric equivalent of alkane diols HO(CH₂)_nOH (n=2, 3, and 5) to form bisdithiophosphonic acid. The obtained crude bisdithiophosphonic acids are treated with dry NH₃ to give ammonium salts of bisdithiophosphonic acids. Ammonium salts of bisdithiophosphonic acids react with ZnSO₄ in water and Cd(Ac)₂ in ethanol to form new bisdithiophosphonate complexes of Zn(II) and Cd(II). The zinc and cadmium complexes of these tetradentate ligands are isolated in high yields. Ammonium salts of bisdithiophosphonic acids and their Zn(II) and Cd(II) complexes are characterized by elemental analyses, mass spectra (ESI), IR and NMR spectroscopies.__________From Koordinatsionnaya Khimiya, Vol. 31, No. 5, 2005, pp. 338–343.Original English Text Copyright © 2005 by Karakus, Yilmaz, Bulak.This text was submitted by the authors in English.     

Syntheses,Structures and Magnetic Properties of Two Co(II) Coordination Polymers with 2,5-Pyridine Dicarboxylic Acid

1 INTRODUCTION Studies on the system comprising ions with un-quenched orbital angular moment have been ofinterest for many years in the design of new mole-cular magnetic materials[1～5], among which thecompounds of cobalt (II) ions are especially attrac…     

Synthesis,Crystal Structures,and Magnetic Properties of Two Manganese(II)/Cobalt(II) Coordination Polymers Constructed by Nitrogenous Carboxylic Acid

Russian Journal of General Chemistry - Two new coordination polymers, {[Mn2(L)(H2O)2]·H2O}n (1) and {[Co2(L)(H2O)2]·H2O}n (2) (H4L = 2-(2,4,6-tricarboxylphenyl)-6-carbxoylbenzimi-dazole),...     

Layer and Cavity Structures of Manganese(II) Diphenate Coordination Polymers

Two novel metal‐organic coordination polymers, [Mn₂(dpa)₂(4,4′‐bipy)₂(H₂O)₂]_n ( 1 ) and [Mn(Hdpa)₂(bpe)(H₂O)₂]_n ( 2 ) (H₂dpa = diphenic acid, 4,4′‐bipy = 4,4′‐dipyridine, bpe = 1,2‐bis(4‐pyridyl)ethene), have been hydrothermally synthesized. Single crystal X‐ray diffraction analyses reveal the two‐dimensional and three‐dimensional structures for complexes 1 and 2 , respectively. In 1 , the dpa ligands link metal ions with different modes into one‐dimensional chains, and the 4,4′‐bipy terminally coordinate to the metal ions extending the chains into a layer. Whereas in 2 , the flexible bpe ligands link the structure motifs into chains, and the hydrogen bonding interactions between the chains lead to the formation of cavity structure.     

具有六重穿插非中心对称金刚石网络结构的Cd(Ⅱ)和Zn(Ⅱ)的配位高聚物(英)

利用1，4-二-(4-羧基吡啶基)丁烷(L)合成了两个新的三维配位聚合物{(CdL₂)·4H₂O·2ClO₄}_n 1和{(ZnL₂)·4H₂O·2ClO₄}_n 2。单晶X-射线结构分析表明，1和2具有相同的计量式，但其晶体属于不同的空间群(1属于P4n2，2属于P4₂22)。两种配合物中，每个金属离子分别由配体与四个相邻的金属离子连接，从而形成具有六重穿插的金刚石网络结构，其网络中大的空腔被高氯酸根离子和(H₂O)₄分子簇所占据。