柠檬酸镍(Ⅱ)配合物的合成、光谱和晶体结构

在弱酸性介质中，氯化镍和柠檬酸铵反应可得到镍水合离子与二聚柠檬酸镍配离子的加合配合物(NH₄)［Ni(H₂O)₆］［Ni(Hcit)(H₂O)₂］₄·10H₂O 1，晶胞参数：a=9.7273(9), b=12.034(2), c=13.348(2)?, α=63.54(2), β=88.45(1),γ=86.28(1)°,V=1395.9(3)?^{3, Z=1，配合物的阳离子为两个铵离子和一个六水合镍离子，阴离子由两个二聚柠檬酸镍［Ni(Hcit)(H₂O)₂］2-₂组成。在不对称的配阴离子中，两个柠檬酸分别以羟基、α-羧基和一个β-羧基同第一个镍配位，剩下的β-羧基作为桥基同另一个镍配位形成二聚体。}     

两个基于苯并咪唑席夫碱的镍(Ⅱ)配合物的合成、晶体结构和抑菌活性

在甲醇体系中,分别将苯并咪唑席夫碱HL¹和HL²与高氯酸镍进行配位反应得到2个结构类似的镍配合物[Ni（L¹）₂]·2H₂O（1）和[Ni（L²）₂]·2H₂O（2）（HL¹=N-（benzimidazol-2-ylethyl）-5-chlorosalicylideneimine,HL²=N-（Benzimidazol-2-ylethyl）-5-bromosalicyli-denei-mine）,并用元素分析、红外光谱、紫外-可见光谱和单晶X射线衍射对其结构进行了表征。结构分析表明：两个配合物均属于单斜晶系,C2/c空间群,Ni（Ⅱ）与来自2个席夫碱配体的4个氮原子和2个氧原子配位,形成八面体结构。配合物中的氢键将配合物1和配合物2分别连接成二维和三维网络结构。选取金黄色葡萄球菌和大肠杆菌作为菌种,研究了2个席夫碱配体和2个配合物的抑菌能力。     

两个基于苯并咪唑席夫碱的镍(Ⅱ)配合物的合成、晶体结构和抑菌活性

在甲醇体系中,分别将苯并咪唑席夫碱HL¹和HL²与高氯酸镍进行配位反应得到2个结构类似的镍配合物[Ni（L¹）₂]·2H₂O（1）和[Ni（L²）₂]·2H₂O（2）（HL¹=N-（benzimidazol-2-ylethyl）-5-chlorosalicylideneimine,HL²=N-（Benzimidazol-2-ylethyl）-5-bromosalicyli-denei-mine）,并用元素分析、红外光谱、紫外-可见光谱和单晶X射线衍射对其结构进行了表征。结构分析表明：两个配合物均属于单斜晶系,C2/c空间群,Ni（Ⅱ）与来自2个席夫碱配体的4个氮原子和2个氧原子配位,形成八面体结构。配合物中的氢键将配合物1和配合物2分别连接成二维和三维网络结构。选取金黄色葡萄球菌和大肠杆菌作为菌种,研究了2个席夫碱配体和2个配合物的抑菌能力。     

两个含二齿席夫碱配体单核镍(Ⅱ)和铜(Ⅱ)配合物的合成、结构及抗菌活性

在溶剂热条件下合成了2种含HL（HL=（N-（3-甲基亚水杨基）吲哚乙胺） 配体的金属配合物Ni（L）₂（1）和Cu（L）₂（2）,并通 过热重分析、红外光谱、元素分析和单晶X射线衍射表征其结构。配合物1和2均属于单斜晶系,空间群为P2¹/_n。配合物1的 晶胞参数为a=1.481 6（7） nm,b=1.310 0（6） nm,c=1.668 7（7） nm,β=111.346（7）°,配合物2的晶胞参数为a=1.479 7（2） nm,b=1.299 41（19） nm,c=1.667 6（2） nm,β=111.537（3）°。配合物1和2具有类似的单核结构,通过分子内C-H…O氢键和分子间D-H…π氢键作用分别将其进一步延伸为三维超分子结构。而且,通过琼脂扩散法对配合物和配体的抗菌活性进行了细致的筛选,实验结果表明配合物1和2比配体具有更优异的抑菌效应。     

两个含二齿席夫碱配体单核镍(Ⅱ)和铜(Ⅱ)配合物的合成、结构及抗菌活性

在溶剂热条件下合成了2种含HL（HL=（N-（3-甲基亚水杨基）吲哚乙胺）配体的金属配合物Ni（L）₂（1）和Cu（L）₂（2）,并通过热重分析、红外光谱、元素分析和单晶X射线衍射表征其结构。配合物1和2均属于单斜晶系,空间群为P2₁/n。配合物1的晶胞参数为a=1.481 6（7）nm,b=1.310 0（6）nm,c=1.668 7（7）nm,β=111.346（7）°,配合物2的晶胞参数为a=1.479 7（2）nm,b=1.299 41（19）nm,c=1.667 6（2）nm,β=111.537（3）°。配合物1和2具有类似的单核结构,通过分子内C-H…O氢键和分子间D-H…π氢键作用分别将其进一步延伸为三维超分子结构。而且,通过琼脂扩散法对配合物和配体的抗菌活性进行了细致的筛选,实验结果表明配合物1和2比配体具有更优异的抑菌效应。     

两个基于苯并咪唑还原席夫碱的双核铜(Ⅱ)配合物的合成、晶体结构和电化学性质

在甲醇体系中,分别将苯并咪唑还原席夫碱HL与四氟硼酸铜和硝酸铜进行配位反应得到2个结构类似的双核铜配合物[CuL(CH_3OH)]_2(BF_4)_2(1)和[CuL(NO_3)_2]_2(2)(HL=2-(((2-(2-benzimidazyl) ethyl)aimino)methyl)phenol),并用元素分析、红外光谱、紫外-可见光谱和单晶X射线衍射对其结构进行了表征。结构分析表明:2个配合物均属于单斜晶系,P2_1/c空间群,为酚氧桥联的双核铜结构,其中每个Cu(Ⅱ)处于N_2O_3的畸变四方锥构型。配合物中的氢键将配合物1和配合物2分别连接成一维和三维网络结构。采用循环伏安法测定了双核配合物的氧化还原电位,表明2个配合物均显示2个准可逆单电子还原过程。     

叠氮两端桥连的双核席夫碱铜(Ⅱ)配合物的合成、晶体结构、热稳定性和磁性研究

利用三齿席夫碱配体5-(乙基甲基氨基)-2-[(2-吗啉-4-乙亚胺基)甲基]苯酚(HL)和叠氮化钠以及醋酸铜在甲醇中反应制备了一个新的具有二重轴对称性的叠氮配体两端桥连的双核铜(Ⅱ)配合物[Cu2L2(μ1,3-N3)2]。利用元素分析、红外光谱和X-射线单晶衍射表征了该配合物的结构。配合物的晶体以正交晶系P21212空间群结晶,其晶体学参数a=0.974 6(1),b=1.378 4(2),c=1.504 1(2)nm,V=2.023 3(5)nm3,Z=2,R1=0.063 8,wR2=0.166 8。本文还研究了该配合物的热稳定性和磁性。     

肟型Schiff碱Cu(Ⅱ)和Ni(Ⅱ)配合物的合成、晶体结构及光谱性质

合成了2个Schiff碱Cu（Ⅱ）/Ni（Ⅱ）配合物[Cu（L¹）₂]（1）和[Ni（L²）₂]（2）（HL¹=1-（4-（（（E）-3,5-dichloro-2-hydroxybenzylidene） amino） henyl） ethanoe O-benzyloxime,HL²=1-（4-（（（E）-4-methoxy-2-hydroxybenzylidene） amino） phenyl） ethanone O-benzyloxime）,并通过元素分析、红外光谱、紫外光谱及X射线单晶衍射分析进行了表征和分析。X射线结构表明：配合物1和2具有类似的结构,均由1个金属离子和2个配体单元组成。配合物1和2都是单斜晶系,但配合物1空间群为C2/c,而配合物2为P2₁/c。且中心金属Cu（Ⅱ）和Ni（Ⅱ）离子的空间构型均为四配位的扭曲的平面四边形结构。配合物1通过π…π和C-H…π作用形成3D超分子结构,而配合物2通过C-H…π作用形成2D超分子孔道结构。     

含氟喹诺酮双核铜(Ⅱ)配合物的合成、晶体结构和生物活性

A new binuclear copper(Ⅱ) complex containing fluoroquinolone ligand， [Cu₂(cfc)₂(bpy)₂(pip)]·6H₂O， was synthesized and its crystal structure was solved. The formula of the complex is C₂₅H₂₆ClCuFN₄O₆， and the crystal-lography data are as follows， triclinic， space group P1， a=6.874(2)?， b=10.761(3)?， c=17.976(5)?， α=80.071(6)°， β=85.253(6)°， γ=79.109(6)°， V=1284.5(6)?3， D=1.542g·cm^-3， F(000)=614， and Z=2. R₁=0.0776 and wR₂=0.2235(I >2σ(I)). The copper atom is five-coordinate with square-based pyramidal geometry and involves two nitrogen atoms from bpy， two oxygen atoms from cfc and one nitrogen atom from pip anion. The stacking effect between cfc and bpy ligands from two neighboring molecules was observed. Both ligand and complex were assayed against gram-positive and gram-negative bacteria by doubling dilutions method， the complex shows the same minimal inhibitory concentration (MIC) as the corresponding ligand against S.Aureus and E.Coli bacteria. The inhibitory effect of the ligand and complex on leukemia HL-60 cell line and liver cancer BEL-7402 cell line have been measured by using MTT (Methyl-Thiazol- Tetrozolium) and SRB (Sulphurhodamin B) assay methods. The results indicated that the complex has strong inhibitory effect on HL-60 cell line and on BEL-7402 cell line. CCDC： 191087.     

基于水杨酰基缩对硝基水杨酰肼及吗啡啉的三核镍(Ⅱ)配合物的合成、晶体结构与磁性质(英文)

合成了1个含水杨酰基缩对硝基水杨酰肼(H3-o-nbzshz)和单啮N-杂环分子吗啡啉(Mf)的镍(Ⅱ)配合物[Ni3(o-nbzshz)2(DMF)2(Mf)2]·2H2O,并通过元素分析、红外、热分析以及单晶衍射等手段进行表征。标题配合物是由肼基N-N单键桥联3个金属中心形成的具有晶体学中心对称性的三核镍配合物结构,Ni1…Ni2原子间距为0.458 6(1)nm。在配合物中,对称的Ni1原子与中间的Ni2原子分别形成平面四方形和轴向伸长的八面体的配位构型。配合物通过分子间氢键作用构筑成二维超分子网络结构。并通过变温磁化率研究了化合物的磁性质。     

双核铜(Ⅰ)配合物的合成、晶体结构与性质研究

本文合成了1个新的铜双核配合物[(CuI)(PMN)]2.2CH3CN(PMN=2、4-二氨基-5-氯苯基-6-乙基嘧啶),并且通过元素分析、红外、荧光、热重和单晶X-射线进行了表征。该配合物属三斜晶系,空间群P1,a=0.8100(16)nm,b=0.96950(19)nm,c=1.2049(2)nm,α=97.88(3)°,β=93.31(3)°,γ=94.14(3)°,V=0.933 8(3)nm3,Z=1,R=0.037 1。在配合物中,每个Cu(Ⅰ)离子与PMN配体的1个N原子和2个I原子配位,展示出三角几何构型。相邻的2个Cu(Ⅰ)离子通过碘原子相连形成双核铜配合物,并进一步通过氢键和I…I作用形成三维网状结构。     

Synthesis,Structure and Properties of an Oxalato-Bridged Dinuclear Nickel(II) Complex

A new dinuclear nickel(II) compound, [Ni₂(TPA)2(μ-C₂O₄)](H₂O)_0.75(ClO₄)₂ [TPA = tris(2-pyridylmethyl) amine], was synthesized and characterized by electronic spectroscopy and X-ray methods. In the complex, the oxalate ion acts as a bis-bidentate ligand and the two Ni(II) ions are six coordinated with a distorted octahedral structure. The complex crystallizes in the triclinic space group P_i , with a = 13.203(4), b = 16.574(5), c = 21.802(6) Å, α = 78.644(5), β = 80.299(5), γ = 72.446(5)°, V = 4429 ų, Z = 2; R ₁ = 0.0615, wR ₂ = 0.1639. In the temperature range 4-300 K, magnetic measurements show that the exchange interaction between the two metal ions is antiferromagnetic with J = ? 18.74 cm^?1, g = 2.10.     

Synthesis,Crystal Structure and Magnetic Properties of a Terephthalato-bridged Binuclear Nickel(II) Complex

A new terephthalato-bridged binuclear nickel(II) complex with a tetraazamacrocyclic compound as the terminal ligand, [Ni 2 (cth) 2 (µ-TPHA)](ClO 4 ) 2 (1) [cth= rac -5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane] has been synthesized and characterized. According to X-ray crystallographic studies on the solvated species 1·2CH 3 OH, each Ni(II) ion lies in a distorted octahedral environment, and the terephthalato ligand bridges two Ni(II) ions in a bis bidentate fashion. Cryomagnetic measurements revealed Curie-Weiss behaviour with è = m 1.4 K. Such behaviour may be due to a very weak intramolecular superexchange interaction through the extended bridge, a weak intermolecular exchange interaction or the local zero-field splitting of Ni(II) ions.     

吡嗪-2,3,5,6-四甲酸镍配合物[Ni(ptcH2)(bpy)(H2O)]的水热合成、结构及性质

A complex of nickel(Ⅱ) with pyrazine-2,3,5,6-tetracarboxylic acid and 2,2′-bipyridine, [Ni(ptcH₂)(bpy)(H₂O)], was synthesized by hydrothermal reaction of Ni(NO₃)₂·6H₂O with pyrazine-2,3,5,6-tetracarboxylic acid and 2,2′-bipyridine at 160 ℃ and characterized by elemental analysis, IR and X-ray diffraction single crystal structure determined. The crystal belongs to Monoclinic system, with space group P2₁/c, a=1.327 9(7) nm, b=1.279 7(7) nm, c=1.161 4(7) nm; β=113.435(8)°, V=1.810 6(17) nm³, Z=4. The coordination environment of nickel(Ⅱ) ion is a distorted octahedral geometry. The title complex is a mononuclear structure which is assembled into 3D supramolecular architecture by strong hydrogen bonds. CCDC: 661507.     

Synthesis,Crystal Structure,and Magnetic Properties of a New Dinuclear Iron Complex with Schiff Base Ligand

A new dinuclear iron(Ⅲ) complex has been synthesized and structurally characterized by X-ray crystallography: [FeⅢ2(L)(C6H5COO)(SO4)(CH3OH)2]·CH3CN·CH3OH(1, H3 L = N,N'-bis(salicylidene)-1,3-diamino-2-propanol). Complex 1 belongs to orthorhombic space group Pna21 with a = 11.4400(8), b = 22.9705(2), c = 12.5712(9) , V = 3303.5(4) 3, Z = 4, F(000) = 1576, Dc = 1.531 g·cm–3, Mr = 761.36, μ = 1.007 mm–1, S = 1.014, the final R = 0.0505 and wR = 0.1018. The crystal packing is stabilized by intermolecular O–H···O hydrogen bonds, forming an extended one-dimensional chain structure. The temperature dependence of magnetic susceptibility measurement shows that antiferromagnetic interaction is propagated between the metal centers. Fit as dinuclear arrangement gave parameters of J = 19.7 cm-1, g = 1.89 and R2 = 0.9999.     

Synthesis,Structure, Magnetic and Electrochemical Properties of a Dinuclear Copper Complex

A material for both magnetic coupling and electrocatalytic hydrogen evolution based on the copper complex, [(L)₂Cu₂] is formed by the reaction of CuCl₂ · 2H₂O with the tetradentate ligand 6‐(3‐aminomethylpropanol)‐2‐tert‐buty‐4‐methylphenol (H₂L), which is prepared by reaction of 2‐tert‐butyl‐4‐methylphenol, 3‐amino‐1‐propanol, and formaldehyde. Structural studies show that in the solid state complex 1 exhibits strong antiferromagnetic exchange interaction between copper(II) ions mediated by oxygen‐bridges. In liquid, 1 becomes a monomer, and can electrocatalyze hydrogen generation both from acetic acid with a turnover frequency (TOF) of 101.70 mol of hydrogen per mole of catalyst per hour at an overpotential (OP) of 941.6 mV (in DMF), and a natural buffer with a TOF of 650 mol of hydrogen per mole of catalyst per hour at an OP of 836.7 mV.     

四核铜化合物(Cu4L4)(CH3CN)(H2L=(R)-1-(1-羟基正丁烷-2-氨甲基)萘-2-醇)的合成、晶体结构及磁性质

采用具有手性的席夫碱配体，(R)-1-(1-羟基正丁烷-2-氨甲基)萘-2-醇(H₂L)，和醋酸铜反应得到四核铜的化合物(Cu₄L₄)(CH₃CN)。用X-射线衍射对化合物的晶体结构进行了测定，结果表明此化合物含有4个铜和4个配体，铜通过配位作用和4个氧原子形成类立方烷中心。磁性测定表明此化合物中金属离子之间有弱的反铁磁相互耦合作用。     

Synthesis,Structure, and Magnetic Properties of a Dinuclear Antiferromagnetically Coupled Cobalt Complex

A new dinuclear cobalt(II) compound,[(TPA*)Co^II(DHBQ^2–)Co^II(TPA*)]²⁺ ( 1 ²⁺) {TPA* =tris[(3, 5‐dimethyl‐pyrazol‐l‐yl)methyl] amine, DHBQ = deprotonated 2, 5‐dihydroxy‐1, 4‐benzoquinone}, was prepared and structurally and magnetically characterized. X‐ray crystallography revealed the centrosymmetric dinuclear divalent cobalt ions bridged by DHBQ^2– unit. The cobalt ions in the title compound have a distorted octahedral arrangement by coordination with four nitrogens of a TPA* and two oxygens of a bridging DHBQ unit. Due to the interdimer offset face‐to‐face π–π stacking in the crystallographic ac plane, the complex shows extended 2D supramolecular structure. Magnetic experiments showed the cobalt‐based dinuclear compound exhibits antiferromagnetic interactions with g = 2.35 and J/k_B = –2.76 K, respectively.     

Synthesis,Crystal Structure and Nonlinear Optical Properties of Nickel（Ⅱ） Complex with Schiff—base Ligand

1 INTRODUCTION Recently, the transition metal complexes and inorganic clusters have also been investigated as promising nonlinear optical materials[1～3]. In our past work, much more efforts have been made to find potential nonlinear optical derived from thiosemicarbazone and dithio-carbazates[4]. As a continuous study on new nonlinear optical materials among the -electron delocalized systems con- taining mixed sulfur and nitrogen donors[5, 6], we report herein the crystal structure and…