Synthesis and Crystal Structure of Copper(Ⅱ) Compound with Didentate Schiff-base Ligand

1INTRODUCTIONTransitionmetalcomplexesofSchiff-baseligandswhichbindtwoormoremetalcentersincloseproximityareimportantaspotentialcatalysts[1]andasmodelsforanumberofmetalloproteins[2]duetotheopportunitytheyprovidefortheinvesti-gationofmagneticinteractions.The…     

Synthesis and Crystal Structure of Copper(Ⅱ) Compound with Didentate Schiff-base Ligand

The title complex [Cu(L)2] (HL=4-salicylideneamino-3,5-dimethanol-1,2,4-triazole) was synthesized by the reaction of Cu(CH3COO)2·2H2O with 4-salicylideneamino-3,5-dimethanol- 1,2,4-triazole in the methanol. The single-crystal X-ray study reveals that the compound crystallizes in monoclinic, space group P21/n with a = 11.746(5), b = 8.145(3), c = 12.786(5)A,β = 106.64(1)°, V = 1172(1)A3, Z = 2, Dc = 1.581 g/cm3, μ= 0.989 mm-1, F(000) = 574, C22H22Cu- N8O6, Mr = 558.02, T = 293(2) K, R = 0.0394 and Rw = 0.0835 for 2376 observed reflections with I > 2σ(I). The complex comprises a four-coordinated copper(Ⅱ) center, with an N2O2 planar coordi- nation environment. The molecules are connected by hydrogen bonds to form one-dimensional chains which are further linked to form a two-dimensional plane.     

Synthesis, Crystal Structure and Characterization of a New Mononuclear Zn(Ⅱ) Complex from Schiff-base Ligand

A new mononuclear [Zn(H-1L)2] (L = 1H-indole-3-ethylene-salicylaldimine) was synthesized through the reaction of Zn(Ac)2, salicylaldehyde and tryptamine in hot ethanol solution and characterized by X-ray crystal structure analysis. The crystal belongs to monoclinic, space group P21/n with a = 15.014(2), b = 10.857(1), c = 17.489(1) , β = 95.49(1)°, V = 2837.8(5) 3, Z = 4, Dc = 1.386 g/cm3, μ = 0.904 mm-1, F(000) = 1232, the final R = 0.0463 and wR = 0.0890 for 4990 independent reflections. In the complex, the Zn2+ ion presents a distorted N2O2 tetrahedral coordination involving two H-1L ligands.     

Synthesis and Crystal Structure of a Novel Binuclear Cu(Ⅱ) Complex with Tetradentate Schiff-base Ligand

A novel binuclear complex ([Cu2(μ2-shed)(hshed)]·(ClO4)·H2O, h2shed = N-salicylidene-N′-(2-hydroxyethyl)ethylenediamine) has been synthesized and structurally characterized by X-ray diffraction analysis. It crystallizes in monoclinic, space group P21/c with a = 12.511(10), b =15.750(12), c = 14.281(12) (A), β = 100.564(14)°, C22H31ClN4O9Cu2, Mr = 658.04, V= 2766(4) (A)3, Z =4, Dc = 1.580 g/cm3, μ(MoKα) = 1.689 mm-1, F(000) = 1352, the final R = 0.0528 and wR = 0.1433 for 4880 independent reflections with Rint = 0.0577. The complex is a binuclear copper compound,and two Cu(Ⅱ ) ions in the binuclear cation are in different coordination environments. The Cu(1) ion adopts a distorted square pyramidal geometry (τ = 0.22) with four donor atoms (N2O2) of the ligand in the basal plane, and one hydroxyl oxygen atom with protonated form occupying the apical position.The Cu(2) ion assumes the geometry of a distorted square plane with four donor atoms (N2O2) of the ligand. The Cu…Cu separation is 3.103 (A). In addition, N-H…O and C-H…O intermolecular hydrogen bonding interactions link these binuclear cations into a quasi one-dimensional chain along the a axis.     

Synthesis and Crystal Structure of Ni(Ⅱ) Complex with N-Salicylaldehyde-N''''-phenoxyacetylhydrazine Ligand

1INTRODUCTIONHydrazoneshavebeenattractingmuchatten-tionfromchemistsinrecentyearsbecauseoftheirbiologicalactivities,chemicalandindustrialversa-tility,andstrongtendencytochelatetotransitionmetals[1,2],lanthanidemetals[3]andmaingroupmetals[4,5].Inthehydrazonecomplexes,thehydra-zoneligandcanactasaneutralormononegativebidentateligand,orevenasadianionictridentateliganddependingonthedonoratomsoftheligandsandthereactionconditions.Ontheotherhand,variouscompoundsderivedfromphenoxyaceticacidareveryus…     

Synthesis, Crystal Structure and Characterization of a New Mononuclear Zn（Ⅱ） Complex from Schiff-base Ligand

A new mononuclear [Zn（H-1L）2] （L = 1H-indole-3-ethylene-salicylaldimine） was synthesized through the reaction of Zn（Ac）2, salicylaldehyde and tryptamine in hot ethanol solution and characterized by X-ray crystal structure analysis. The crystal belongs to monoclinic, space group P21/n with a = 15.014（2）, b = 10.857（1）, c = 17.489（1）A,β = 95.49（1）°, V = 2837.8（5） A^3, Z = 4, Dc = 1.386 g/cm^3, μ = 0.904 mm-1, F（000） = 1232, the final R = 0.0463 and wR = 0.0890 for 4990 independent reflections. In the complex, the Zn2＋ ion presents a distorted N2O2 tetrahedral coordination involving two H-1L ligands.     

Synthesis, Crystal Structure and Antimicrobial Activity of a Novel Ni(Ⅱ) Complex

A new nickel(Ⅱ) complex, C34H38N8NiO4, has been prepared and charac-terized by X-ray diffraction analysis. It crystallizes in the monoclinic system, space group P21/c with a = 11.715(5), b = 12.328(5), c =11.113(5) A, β= 92.589(5)°, Z = 2, Dc = 1.411 g/cm3, μ = 0.658 mm-1, the final R = 0.0427 and wR = 0.1099 for 2229 observed reflections with Ⅰ> 2σ(Ⅰ). The complex is a centrosymmetric plane in which nickel(Ⅱ) is coordinated in a regular octahedron to the ligand phenytoin through the nitrogen atoms of ethylenediamine, imine and amine. The complex was valued for its antimicrobial activity against bacterial strands using the agar diffusion method, and found to be active against the four test bacterial organisms. Preliminary screening for antimicrobial activities showed that the title complex is quite active against standard strains of Salmonella species, Staphylococcus aureus, Bacillus pumilus and Eschierichia coli.     

Hydrothermal Synthesis,Crystal Structure and Antimicrobial Activity of a New Ni(Ⅱ) Complex

The title complex [NiL]·H2O(C20H24N2NiO5,L = paeonol-ehylenediamine) was synthesized by the hydrothermal method and characterized by IR,cyclic voltammetry and X-ray single-crystal diffraction.The complex belongs to the monoclinic system,space group P21/c with a=13.4361(13),b=7.3290(10),c=20.981(2),β=109.244°,V=1950.6(4)3,Z=4,F(000)=904,Dc=1.468 g/cm3,μ(MoKα)=1.029 mm-1,the final R=0.0588 and wR=0.1577.The complex exhibits antimicrobial activities(antimicrobial activities against Staphylococcus aureus and Escherichia codi) by agar diffusion measurement.     

Synthesis, Characterization and Crystal Structure of Chlorodibenzyltin(IV) Complex with Dithiomorpholinocarba-mate Ligand

ＩｎｔｒｏｄｕｃｔｉｏｎＯｒｇａｎｏｔｉｎ(ＩＶ)ｃｏｍｐｌｅｘｅｓｗｅｒｅｗｉｄｅｌｙｕｓｅｄａｓｂｉｏ ｃｉｄｅｓ,ｆｕｎｇｉｃｉｄｅｓａｎｄｉｎｉｎｄｕｓｔｒｙａｓｈｏｍｏｇｅｎｅｏｕｓｃａｔａ ｌｙｓｔｓ.1 6 Ｍｏｒｅｒｅｃｅｎｔｌｙ ,ｐｈａｒｍａｃｅｕｔｉｃａｌｐｒｏｐｅｒｔｉｅｓｏｆａｌｋｙｌｔｉｎ(ＩＶ)ｃｏｍｐｌｅｘｅｓｗｉｔｈＮ ,Ｎ ｄｉａｌｋｙｌｄｉｔｈｉｏｃａｒｂａ ｍａｔｅｌｉｇａｎｄｓｈａｖｅｂｅｅｎｉｎｖｅｓｔｉｇａｔｅｄｆｏｒｔｈｅｉｒａｎｔｉｔｕｍｏｕｒａｃｔｉｖｉｔｙ.7,8…     

Synthesis and Crystal Structure of a Novel Binuclear Cu（ Ⅱ ） Complex with Tetradentate Schiff-base Ligand

1 INTRODUCTION Many metalloenzymes containing in their active sites two copper ions that operate cooperatively occur in plants and animals. They are utilized for dioxygen transport or activation, electron transfer, reduction of nitrogen oxides, and hydrolytic che- mistry[1]. Consequently binuclear copper complexes with two ions in close proximity have received a great deal of attention[2～4]. These complexes are particularly of interest in the field of biomimetic chemistry to provide impr…     

Synthesis, Characterization, Crystal Structure and Antibacterial Activities of a Nickel(Ⅱ) Complex with 2'-(2-Thienylidene)-hydroxybenzoylhydrazide

In the ethanol solvent, a nickel(II) complex Ni(C12H10N2O2S)2 upon reaction of 2'-(2-thienylidene)-hydroxybenzoylhydrazide with nickel acetate was synthesized, and its structure was characterized by IR, UV, elemental analysis and X-ray diffraction analysis. The crystal belongs to monoclinic system, space group C2/c with a = 22.052(3), b = 5.9681(6), c = 18.522(2) , β = 110.679(4)°, V = 2280.6(4) 3, Z = 4, Mr = 551.27, μ = 1.606 mm-1, Dc = 1.075 g/cm3, F(000) = 1136 and Rint = 0.0556. The nickel(Ⅱ ) atom in the compound is four-coordinated with two nitrogen atoms from amide and two oxygen atoms from keto group. The biological activities have been measured, show- ing the compound exhibits better anti-bacterial activity than the ligand.     

Synthesis and Crystal Structure of a Novd Nickel (Ⅱ) Coordination Polymer with Chiral Schiff-base

以手性对称的Shiff碱为配体,合成了手性镍配合物[Ni2(salen)2(1)],其结构经X-单晶射线衍射和元素分析表征.1属单斜晶系,C2空间群,晶胞参数a ＝25.060(5)(A),b=13.508(3)(A),c＝ 11.938(2)(A),α=90(3)°,β=104.82(3)°,γ=90(3)°,V=3906.7(14)(A)3,Z=4,Mr=828.24,Dc=1.429 g·cm-3,F(000)=1808,μ=1.027mm-1,GOF=1.068,R1=0.051 0,wR2=0.1289.在1的分子结构中,环己胺和苯环之间通过分子间CH…π作用形成二维结构.     

Synthesis,Crystal Structure and Spectroscopic Properties of Zn(Ⅱ) with N-carbamylglutamate Ligand

Zn C6H8N2O5.H2O(NCGZn) has been synthesized, and its functional groups present in the title compound were confirmed by elemental analysis, TG and IR spectral studies. Meanwhile, the crystal of NCGZn was obtained by slow evaporation of a saturated aqueous solution at room temperature and confirmed by single-crystal X-ray diffraction analysis. It crystallizes in triclinic, space group P21 with a = 5.03220(1), b = 13.3747(4), c = 12.9944(4) , β = 92.987(2)o, V = 873.39(4) 3, Z = 2, C12H20N4O12Zn2, Mr = 543.10, Dc = 2.065 g/cm3, F(000) = 552, μ(Mo Ka) = 2.826 mm-1, R = 0.0422 and w R = 0.1142. In NCGZn, Zn(1) and the symmetry formed Zn(1) ions are connected by five atoms from four NCG-2H anions and a water molecule. A NCG ligand has two carboxylate groups, one connecting a Zn ion, and the other bridgiong two Zn ions. The NCG ligand bridges four Zn ions through the amino group and two carboxylate groups with a water molecule to yield a 3D coordination polymer structure with hydrogen bonds.     

Synthesis,Crystal Structure and Antitumor Activity of a Novel Zn(Ⅱ) Complex with 2-(Nicotinoyloxy)acetic Acid Ligand

A novel Zn(Ⅱ) complex, [ZnL_2(H_2O)_4]·H_2O(1, HL = 2-(nicotinoyloxy)acetic acid), was synthesized using Zn(OAc)_2·2H_2O and 2-(nicotinoyloxy)acetic acid as raw materials. Its structure has been elucidated by elemental analysis, IR and single-crystal X-ray diffraction. The structural analysis revealed that complex 1 crystallizes in triclinic, space group P1 and the Zn(Ⅱ) atom is six-coordinated with two N atoms from two different 2-(nicotinoyloxy)acetate anion ligands and four O atoms from coordinated water molecules. Complex 1 forms a 3D network structure by O–H···O hydrogen bonds. The antitumor activities of 2-(nicotinoyloxy)acetic acid ligand and its Zn(Ⅱ) complex were evaluated against human lung adenocarcinoma A549 cells, human hepatoma SMMC-7721 cells and human colon carcinoma Wi Dr cells.     

Synthesis, Crystal Structure, Antibacterial Activity and Interaction with BSA of Copper( Ⅱ ) Complex with Ligand N, N' -Bis ( 4-chlorobenzyl ) propane-1, 2-diamine

合成了N,N'-双(4-氯苄基)-1,2-丙二胺铜(Ⅱ)配合物[ CuCl( C17 H20C12N2)2]·(NH4)·Cl2,通过元素分析和IR光谱对其进行了表征,并通过X射线单晶衍射确定了其晶体结构.晶体结构分析表明,该晶体属于三斜晶系,P1空间群,晶胞参数a=1.35222(16) nm,b=1.37899(17) nm,c=1.39806(19) nm;α=60.954(1)°,β=87.502(2)°,γ=65.970(1)°,V=2.0424(4) nm3,Dc=1.357 g/cm3,Z=2,F(000)=862,R1=0.0925,wR2=0.2668[ Ⅰ＞2σ(Ⅰ)],S=1.001.配合物的金属中心与来自2个配体的4个氮原子和1个末端氯原子配位,形成了轻微扭曲的四方锥几何构型,扭曲指数τ=0.04(1).抗菌实验结果显示,配合物对大肠杆菌、枯草杆菌和金色葡萄球菌均表现出良好的抑菌作用.采用荧光光谱研究了不同温度下配合物与牛血清白蛋白( BSA)的相瓦作用,结果表明,配合物对BSA的荧光猝灭属于静态猝灭.计算了不同温度下配合物与BSA间的结合常数(Ka)、结合位点(n≈1)及相关热力学参数(△H＞0,△S＞0,△G＜0),结果表明,二者主要靠疏水作用力结合.依据F(o)ster的非辐射能量转移理论,求得给体(BSA)与受体(配合物)间的距离r=2.56 nm,说明配合物与BSA之间可能发生了非辐射能量转移.     

Synthesis,Crystal Structure and Fluorescence Property of a Zinc(Ⅱ) Coordination Polymer with a Theoretical Calculatio

We have designed and synthesized a new luminescent coordination polymer[Zn₂(NO₃)(NCP)₃(H2O)₃]n·2 nH₂O(1,HNCP=2-(2-carboxyphenyl)imidazo-[4,5-f]-1,10-phenanthroline)under hydrothermal conditions,which has been structurally characterized by single-crystal X-ray diffraction analyses.1 crystallizes in monoclinic,space group P2₁/n,with a=13.7748(3),b=19.2651(4),c=19.9543(4)?,β=95.339(2)o,V=5272.35(19)?³,C₆₀ H_39.73 N₁₃ O_13.33 Zn₂,M_r=1286.80,D_c=1.621 g/cm³,Z=4,μ(Mo Ka)=2.118,F(000)=2629,the final R=0.0598 and w R=0.1483.In 1,the organic ligand NCP-displays two different bridging modes to connect adjacent Zn(II)ions into a 1 D chain along the c-direction.Photoluminescent analyses reveal that 1 exhibits a strong green emission with a fluorescent lifetime of 5.57 ns.The first-principle calculation results show that the luminescence mainly originates from ligand-centered charge transition.     

Synthesis, Crystal Structure and Antimicrobial Activity of a Novel Ni(II) Complex

A new nickel(II) complex, C34H38N8NiO4, has been prepared and charac- terized by X-ray diffraction analysis. It crystallizes in the monoclinic system, space group P21/c with a = 11.715(5), b = 12.328(5), c =11.113(5) , β = 92.589(5)°, Z = 2, Dc = 1.411 g/cm3, μ = 0.658 mm-1, the final R = 0.0427 and wR = 0.1099 for 2229 observed reflections with I > 2σ(I). The complex is a centrosymmetric plane in which nickel(II) is coordinated in a regular octahedron to the ligand phenytoin through the nitrogen atoms of ethylenediamine, imine and amine. The complex was valued for its antimicrobial activity against bacterial strands using the agar diffusion method, and found to be active against the four test bacterial organisms. Preliminary screening for antimicrobial activities showed that the title complex is quite active against standard strains of Salmonella species, Staphylococcus aureus, Bacillus pumilus and Eschierichia coli.     

Synthesis, Crystal Structure and Characterization of a New Manganese(Ⅱ)Tetracarboxylate

By hydrothermal synthesis,a manganese(Ⅱ)tetracarboxylate [Mn(2,2'-bipyridi-ne)btec)o.5(H2O)]2n(H4btec=1,2,4,5-benzenetetracarboxylic acid)was obtained and characteri-zed by single-crystal X-ray diffraction,IR,elemental analysis and thermogravimetrie analysis.It crystallizes in triclinic,space group P(1),with a=7.721(4),b=8.905(5),c=10.712(6)(A),α=80.899(8),β=70.371(8),γ=78.201(8)°,z=2,V=675.8(7)(A)3,Mr=354.20,Dc=1.741 g/cm3,μ=1.007mm-1,F(000)=360,S=0.956,(△/σ)max=0.000,the final R=0.0490 and wR=0.1262.This compound presents an infinite 1D polymer featuring a double-chain structure.The Mn(Ⅱ)ion is five-coordinated.The four carboxylate groups of btec4- are all deprotonated and coordinated to four Mn atoms in a monodentate fashion,forming a 1D double chain structure with a cavity.Such chains are interconnected by π-π stacking interactions into 2D layers which are further interlinked into a supramolecular structure by hydrogen bonds.     

Synthesis, Characterization and Fluorescence of a One-dimensional Cadmium（Ⅱ） Compound Involving Covalent and Hydrogen Bonds

1 INTRODUCTION The rational design and synthesis of new metal- organic coordination polymers have generated con- siderable interest in supramolecular chemistry and material science owing to their intriguing structural diversities and potential applications as functional materials[1～3]. Molecular self-assembly has been pro- ved to be an efficient way to construct various inte- resting coordination polymers[4～6]. The coordina- tion covalent bond, hydrogen bond or other mole- cular interact…