Synthesis and Structure of a Mononuclear Co（Ⅱ） Complex Based on a Salicylideneaniline Ligand, （Z）-4-（2- Hydroxybenzylideneamino）-2-hydroxybenzoic Acid

The reaction of a new salicylideneaniline ligand, （Z）-4-（2-hydroxybenzylideneamino）-2-hydroxybenzoic acid （HL） with COCl2-6H2O yields one Co（Ⅱ） complex, [CoL2（CH3OH）2 （H2O）2]. This complex crystallizes in monoclinic P21/n space group, with a = 5.4992（5）, b = 18.2200（15）, c = 14.8678（14） ,A, β= 98.64（1）°, V = 1472.8（2）A3, C30H32CoN2O12, Mr = 671.51, Z = 2, Dc = 1.51416 g/cm^3, F（000） = 698, μ = 0.652 mm^-1, T = 298（2） K, R = 0.0514 and wR = 0.1735 for all 2675 observed reflections （I 〉 2σ（I））. In this complex, the imine N does not link to Co（H） and a remarkable torsion around C=N bond is observed. Through hydrogen bonds, the monomers aggregate into an interesting ＂Z-shape＂ framework.     

Synthesis and Crystal Structure of a Co(II) Complex with Schiff Base and Imidazole Ligand

1 INTRODUCTION The chemical behavior of metal complexes with Schiff base ligand has attracted much attention be- cause of their catalytic activity in some industrial[1, 2] and biochemical processes[3~5]. As some metal com- plexes have shown the catalytic activity in some polymerization reactions[2, 6], we are recently inte- rested in polymerizartion of organo-silicon com- pounds catalyzed by Schiff base complexes of tran- sition metals. A series of Schiff base complexes have been prepare…     

3-羧基苯氧乙酸钴配合物[Co(m-CPOAH)2(H2O)4]的合成与晶体结构

合成了一个新的配合物 [Co(m-CPOAH)2(H2O)4](m-CPOAH- = 3-羧基苯氧乙酸根), 并对其进行了元素分析、红外和单晶X-射线的表征。结果表明:配合物晶体属三斜晶系, 空间群为P, 晶胞参数为a = 4.9701(10), b = 5.8701(12), c = 18.272(4) , a = 97.50(3), b = 94.76(3), g = 98.34(3), V = 520.11(18) 3, Z = 1, Mr = 521.29, Dc = 1.664 g/cm3, m = 0.901 mm-1, F(000) = 269, 最终R = 0.0415, wR = 0.0787。2个不同配体的氧乙酸上的羧基氧原子和4个配位水分子与钴原子配位, Co(Ⅱ)原子为六配位八面体构型, 且由分子间氢键形成了三维超分子氢键网络结构。     

N,N''''-双(4-甲基-2-苯并噻唑基)-2,6-吡啶二酰胺钴(Ⅱ) 配合物的合成和晶体结构

0IntroductionCobaltcomplexeswithnonmacrocyclicchelatingligandscontainingtheamidefunctionalityhavere鄄ceivedmuchattentioninpastyears[1~3].Somestudieshaverevealedthatdeprotonatednitrogensoforganicamides,beinganionicinnature,arecapableofstabi鄄lizingthetriva…     

Synthesis and Crystal Structure of a Dinuclear Cobalt(II) Complex [Co2(1H-benzimidazole)4(1,4-bdoa)2]

1 INTRODUCTION In the last decades, metal carboxylate complexes have become a particularly important subject in mo- dern coordination chemistry owing to their fascina- ting structural diversity and potential applications as functional materials[1～3]. The generation of supramo- lecular architectures relies on the combination of se- veral factors, such as the coordination geometry of metals, bonding of the ligands and reaction condi- tions[4, 5]. In relation to the ligands, the judicious c…     

Synthesis and Crystal Structure of Complex: [Co(cdm)_2(H_2O)_4].2H_2O (cdm=Carbamyldicyanomethanide Anion)

1 INTRODUCTION Crystal engineering and the design of solid-state architectures have recently become areas of increasing interest[1, 2]. Such crystal engineering may afford new materials with useful properties such as catalytic activity, micro-porosity, nonlinear optical activity, cooperative magnetic behavior and so on. Polynitrile-ligand is one of the ideal multi-functional ligands for crystal engineering and many complexes with polynitriles as ligands have been found to show the spe…     

N，N′-双(4-甲基-2-苯并噻唑基)-2，6-吡啶二酰胺钴(Ⅱ)配合物的合成和晶体结构(英)

Treatment of deprotonated N，N′-bis(4-methyl-2-benzothiazolyl)-2, 6-pyridicarboxamide (L^2-) with CoCl2·6H2O yields the mononuclear complex, (Et₄N)₂[CoL₂]·0.5H₂O. Single crystal X-ray structural determination has been carried out for the complex, crystal system: Monoclinic, space group: P2₁/c, a=1.444(1) nm, b=1.969(1) nm, c=2.448(1) nm, β=118.02(1)°, V=6.143 0(15) nm³, Z=4. In this complex, the central Co(Ⅱ) atom is in an octahedron environment, with four deprotonated amide-N atoms in the equatorial plane and two pyridine-N atoms in the axial positions. CCDC: 252558.     

一个新的钴磷酸盐配合物Co(μ3-O3P)·H2O的合成与晶体结构

0引言 众所周知,天然硅铝酸盐沸石在选择性催化和气体分离方面具有重要的商业用途,具有类似结构的金属磷酸化合物作为潜在的吸附与离子交换材料、选择性催化剂和传感器等方面的应用性能正在引起人们的重视,因此模拟天然沸石结构、定向合成具有某种特定用途的金属磷酸化合物已引起人们的浓厚研究兴趣[1].     

Synthesis, Crystal Structure and Properties of [Co(1,3- bdoaH)_2·4H_2O]·4H_2O with Benzene-1,3-dioxyacetate Ligand

1INTRODUCTIONTheorganicaromaticcarboxylatemetalcom-plexeshavearousedmuchattentionandbeenwidelyinvestigated.However,thestrategyofdesignandsynthesisofthesecomplexesismostlyfocusedonrigidligands,suchasterephthalicacidandbenzenetricarboxylicacid,etc.[1～5].Theassemblyofcom-plexesbyusingflexiblearomaticcarboxylateli-gandsisfarlessdeveloped[6,.Phenylenedioxydia-7]ceticacids(bdoaH2)withbiologicalactivitiesandwideapplicationsinagriculture[8]areafamilyofmultidentateflexibleligandswithversatilebind…     

Synthesis and Crystal Structure of a New Mononuclear Cobalt(Ⅲ) Complex with 2,2′-Dipyridylamine and Glycine as Ligands

A new mononuclear cobalt(III) complex [Co(dpa)2(Gly)](ClO4)2′4H2O was synthesized by the reaction of Co2+, glycine (gly) and 2,2′-dipyridylamine (dpa) in a methanol-water solution, and its structure was characterized by IR, EA, ES-MS and X-ray structure analysis. The compound crystallizes in the monoclinic system, space group P21/n with a = 12.8795(2), b = 13.2904(2), c = 19.1104(2) , β = 109.378(1)°, V = 3085.89(8) 3, Z = 4, Mr = 746.36, Dc = 1.606 g/cm3, μ = 0.808 mm-1, F(000) = 1536, the final R = 0.0543 and wR = 0.1306 for 5393 independent reflections. The magnetic measurement of the compound at room temperature shows that it is diamagnetic and the cobalt ion is in low spin +3 oxidation state. ES-MS experiments show that the [Co(dpa)2(Gly)]2+ cation is very stable in the methanol solution.     

新的含有4-对甲基苯基-3，5-二(2-吡啶基)-1，2，4-三氮唑钴配合物的合成和晶体结构(英)

A new cobalt(Ⅱ) complex, [CoL₂(NCS)₂]·2CH₂Cl₂, [L=4-(p-methylphenyl)-3,5-bis(pyridin-2-yl)-1,2,4-triazole], was synthesized and its crystal structure was determined by X-ray analysis. The complex crystallizes in monoclinic system with space group P2₁/c, a=0.867 40(17), b=1.453 9(3), c=1.781 9(4) nm, β=91.18(3)°, V=2.246 7(8) nm³ and Z=2. The cobalt atom is in a distorted octahedral environment with two bidentate chelating L ligands in the equatorial plane and two NCS^- ions in the axial positions. CCDC: 251658.     

桥联双核配合物[(DPC)2Co2(H2O)5]·2H2O的合成与晶体结构

The new complex formulated [(DPC)₂Co₂(H₂O)₅]·2H₂O (HDPC^- is pyridine-2,6-dicarboxylate) has been synthesized and the crystal structure was determined by X-ray diffraction. The crystal structure of the complex belongs to monoclinic system with space group P2₁/c, a=0.83850(10) nm, b=2.7386(4) nm, c=0.9610(2) nm, β=98.280 (10) °, V=2.1838(6) nm³, Z=4, D_c=1.746 g·cm^-3, μ=1.597 mm^-1. In the crystal the two Co²⁺ are in distorted octahedrons. The part of [Co(DPC)₂] possess an approximate D_2d symmetry, while the part of [OCo₍₂₎(OH₂)₅] has an approximate C₂ symmetry.     

新颖无限三股螺旋钴配位聚合物{[Co(4,4′-bipyridine)(4,4′-azobispyridine)2(NCS)2]·H2O}n的合成、结构和性质的研究

The novel complex {[Co(bipy)(azpy)₂(NCS)₂]·H₂O}_n (where bipy=4,4′-bipyridine, azpy=4,4′-azobisp- yridine) has been synthesized and characterized by elemental analyses, IR, UV, thermal analyses, and vari-able-temperature magnetic susceptibility. The crystal (C₃₂H₂₆CoN₁₂OS₂, M_r=717.70) belongs to the orthorhombic, space group Pnna, a=2.21312(16)nm, b=1.40403(10)nm, c=1.14237(8)nm, V=3.5497(4)nm³, Z=4, D_c=1.343g·cm^-3, μ=0.645mm^-1, F(000)=1476, and final R₁=0.0691, wR₂=0.1129 for 231 parameters and 1674 observed reflections [I >2.00σ(I)]. The Co(Ⅱ) atom is, in a distorted octahedral geometry, coordi-nated by six nitrogen atoms from two bridging bipy, two monodentate azpy, and two thiocyanate groups. The bridging ligand bipy links Co(Ⅱ) atoms to form the infinite “rod＂ with terminal coordination azpy ligand acting as sidearms. Unprecedented three parallel interpenetrating two-dimensional (4,4) networks and novel infinite triple helices are formed via hydrogen-bonding interactions. CCDC: 155588.     

Synthesis and Crystal Structure of a Co（II） Coordination Polymer Derived from a Flexible Bipyridyl Derivative Ligand

1 INTRODUCTION The infinite networks constructed from transition metal complexes have attracted considerable current interest in recent years. The motivation behind this activity has been stimulated by their potential appli- cations in selective inclusion of ions, molecular re- cognition, host-guest chemistry, ion exchange, cata- lysis, electrical conductivity, magnetism, optics and so on[1～4]. It is well known that the diversity in structures and topologies of supramolecules is attri- b…     

含2,6-萘二甲酸及2,2′-联吡啶的双核钴配合物的合成和晶体结构

溶液法合成了配合物[Co2(NDC)(BIPY)2(H2O)6]·(NDC)(NDC=2,6-萘二甲酸根,BIPY=2,2′-联吡啶),用X-射线单晶衍射分析确定了该配合物的晶体结构。配合物为三斜晶系,P1空间群,a=0.92239(4)nm,b=1.12616(5)nm,c=1.22119(6)nm,α=94.857(3)°,β=111.843(2)°,γ=112.200(3)°,V=1.05205(8)nm3,Z=2,Dc=1.526Mg·m-3。该配合物由[Co2(NDC)(BIPY)2(H2O)6]2+阳离子和1个游离的2,6-萘二甲酸根阴离子组成。Co2+离子与2,6-萘二甲酸根的1个氧原子,2,2′-联吡啶的2个氮原子和3个水的氧原子配位,形成扭曲的八面体构型。2,6-萘二甲酸根的2个羧基分别以单齿方式桥连2个Co2+离子形成双核配合物。配合物中,配位水分子之间,配位水分子和2,6-萘二甲酸根阴离子之间,以及配位水分子和未配位的2,6-萘二甲酸根阴离子之间形成了丰富的O-H…O氢键,进而将双核配合物连接成三维超分子。     

Synthesis and Crystal Structure of a Copper(II) Complex with 2,4-Dihydroxybenzylidene Benzoylhydrazone Ligand

1 INTRODUCTION The chemical properties of acylhydrazones Schiff bases and their complexes with some transition metal ions have been intensively investigated in several re- search areas because of their chelating capability and pharmacological applications[1～10]. Intriguingly, the copper(II) complexes are shown to be signifycantly more potent than the metal free chelate, suggesting that the metal complex is the biologically active species. Owing to the biological interest in these types …     

Synthesis and Crystal Structure of Co(C_6NO_2H_4)_3. H_2O

1INTRoDUCTIONAlotofresultsoncobaltcomplexstructureshavebeenreportedforseveraldecades.Theinterestofresearchinthisfieldhasneverbeenreducedbecausethecobaltcomplexesplayaveryimportantroleinthelifescienceandcatalysis,etc[1-6).WereportherethesynthesisandstructureofcomplexCo(C,NO,H'),.H,O.2EXPERIMENTALAllreagentsandsolventsusedareofARgradefromcommericalsourceswithoutfurtherpurification.ThetitlecompoundCo(C,NO,H,),.H,Owassynthesizedbythefollowingmethod.When2.4g(ca.1mmol)ofCoCl2.6H2Ow…     

Synthesis and Crystal Structure of Cobalt(II) Complex [Co(H2O)2(bpe)(OAc)2](4,4''-dpdo

The reaction of Co(OAc)2 with bpe and 4,4'-dpdo in an aqueous-alcohol solution affords the formation of red crystals of [Co(H2O)2(bpe)(OAc)2](4,4'-dpdo (bpe = trans-1,2-bis(4- pyridyl)ethylene, 4,4'-dpdo = 4,4'-dipyridyl N,N'-oxide). The molecular and crystal structures were determined by single-crystal X-ray diffraction. The crystal is of triclinic, space group P with a = 7.6146(9), b = 8.6691(11), c = 10.344011 A, α = 88.311(3), β = 76.992(3), γ = 75.809(3)°, V = 644.7613 A3, Z = 1, C26H28CoN4O8, Mr = 583.45, Dc = 1.503 g/cm3, μ = 0.724 mm-1, F(000) = 303, T = 223(2) K, the final R = 0.0477 and wR = 0.1177 for 3199 observed reflections with I > 2σ(I). In the crystal the cobalt atom is six-coordinated by oxygen atoms from two carboxylic molecules, two nitrogen atoms from the bpe ligands and two water molecules, completing an octahedral geometry. The structure of the title complex consists of neutral chains containing cobalt(II) ions bridged by mutually trans bpe molecules. The adjacent chains are connected through weak hydrogen bonds to form a two-dimensional structure.     

[Co(pyr)_2(sal)_2]·H_2O的合成和晶体结构

在水溶液中合成了标题配合物[Co(pyr)2(sal)2]H2O, 化学式为C24H22N2O5Co,并测定了其晶体结构。晶体属单斜晶系,C2/c空间群。a = 14.654(3),b = 12.247(3),c = 14.060(3) ,β = 116.804(4)°,V = 2252.1(8) 3, Mr = 477.37, Z = 4, Dc = 1.408 g/cm3,μ = 0.800 mm-1,F(000) = 988, Co(Ⅱ)原子是六配位的八面体结构。     

叠氮和1-（4-吡啶基）-2-（2-苯甲氰基）乙烯锌(Ⅱ)配合物的合成与晶体结构(英)

The hydrothermal reaction of Zn(NO₃)₂, NaN₃, and 1-(4-pyridyl)-2-(2-cyanobenzene) ethylene (PCE), at the mole ratio 1∶2∶2 in methanol and water at 70 ℃ for two days afforded [Zn(PCE)₂(N₃)₂], the structure of which features a four-coordinated distorted tetrahedron geometry around zinc(Ⅱ). CCDC: 235945.