首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 11 毫秒
1.
2.
Abstract A novel polymeric zinc(II) complex of quinine, [chlorosulphato (2-ethenyl)-4-azabicyclo[2.2.2]oct-5-ylium-(6-methoxyquinolin-4-yl) methanol zinc(II)] has been synthesized and characterized. Single-crystal X-ray diffraction analysis of the complex (C20H25ClN2O6SZn) revealed that quinine forms a zigzag coordination polymeric complex with Zn(II) of extended chains –ZnCl–O–SO2–O–Zn–O–SO2–O–ZnCl–. The crystals are monoclinic, space group C2 with a = 20.5035(5), b = 9.7943(2), c = 11.7814(4) ?, β = 96.578(2)°, Z = 4, V = 2350.3(1) ?3. The complex exhibits a tetrahedral geometry. Each Zn(II) centre is thus coordinated to an O atom from each of two sulphate bridges, a Cl atom and quinoline atom N(4) of the quinine moiety. The second quinuclidine nitrogen in the quinine is protonated. In the crystal, there is linkage of two polymeric chains related by a twofold rotation axis, resulting in a bilayer. The linking is achieved by hydrogen bonding from the quinine cation which provides two donors (–OH, N+–H), to oxygen atoms of sulphate groups which act as acceptors. Graphical Abstract The new polymeric zinc(II) complex of quinine, [chlorosulphato (2-ethenyl)-4-azabicyclo[2.2.2]oct-5-ylium-(6-methoxy quinolin-4-yl) methanol Zinc(II)] has been synthesized and structurally characterized The compound was characterized by IR spectroscopy, elemental analysis and X-ray diffraction. X-ray analysis showed that quinine forms a zigzag coordination polymeric complex with Zn(II) of extended chains –ZnCl–O–SO2–O–Zn–O–SO2–O–ZnCl–.   相似文献   

3.

Abstract  

A novel five-coordinate Zn(II) complex of 1,3-bis[2-(2-hydroxybenzylideneamino)phenoxy]propan-2-ol (BHBAPP), namely [Zn2(BHBAPP)2](Pic)2 · C2H5OH (Pic = picrate) has been synthesized and characterized by elemental analyses, IR spectra and X-ray single-crystal diffraction. The complex crystallizes in the triclinic space group P−1 with cell constants a = 9.8145(9), b = 13.2398(12), c = 14.5058(13) ?; α = 86.4560(10), β = 82.7260(10), γ = 73.0570(10)°, Mr = 1596.08, V = 1,788.0(3) ?3, Z = 1, Dc = 1.482 g/cm3, F(000) = 822, μ = 0.760 mm−1. The structure was solved by direct methods and refined to R = 0.0390 (wR 2 = 0.0996). Examination of the structure shows the Zn atoms are coordinated to four oxygen atoms and one nitrogen atom from BHBAPP ligand to form a distorted trigonal bipyramidal geometry. Further, in the crystal structure [Zn(BHBAPP)]+1 cations and picrate anions are linked together via hydrogen bonding interactions tightly forming a three-dimensional supramolecular. It must be pointed out that the picrate anions play a special role in increasing the dimensionality of the supramolecular architecture.  相似文献   

4.
Abstract  A mixed-ligand complex Cu(IDA)(NBZIM)(H2O) (IDA = iminodiacetate dianion, NBZIM = 6-nitro-1H-benzimidazole) has been synthesized and characterized by elementary analysis, IR, UV-Vis, molar conductivity and single crystal X-ray diffraction. It crystallizes in the triclinic system, space group P with a = 6.9423(14), b = 9.3100(19), c = 11.754(2) ?, α = 69.61(3), β = 85.87(3), γ = 83.87(3)°, Z = 2, R 1 = 0.0463 and ωR 2 = 0.0987. The single crystal X-ray analysis reveals that the Cu(II) atom is coordinated by one tridentate iminodiacetate dianion, one monodentate nitrobenzimidazole molecule and one water molecule, in a distorted square base pyramidal coordination geometry. The iminodiacetate dianion chelates the Cu(II) atom in the meridional mode. A three-dimensional network is formed by hydrogen bonds and stabilized by NBZIM π-π stacking interactions. The interaction of the complex with Fish sperm DNA has also been studied using absorption spectra. Index Abstract  In the crystal of Cu(IDA)(NBZIM)(H2O), each molecule is linked to other six neighbouring ones by ‘eight’ hydrogen bonds in four cases by means of the ‘symmetry related’ linkage.   相似文献   

5.

Abstract  

The reaction of PdCl2 with a bulky acridine-based ligand afforded a novel PdII complex [Pd2(L)Cl4(CH3CN)](CH3CN)0.5 (1) (L = 9-[3-(2-pyridyl)pyrazol-1-yl]-acridine) exhibiting intra- and intermolecular C–H···Pd H-bonding interactions, which was characterized by elemental analysis, IR, and single-crystal X-ray diffraction analysis (triclinic system, space group P-1, with a = 8.774(6), b = 12.742(9), c = 14.149(10) ?, α = 67.573(11), β = 72.601(11), γ = 83.674(12)°, V = 1395.4(17) ?3, and Z = 2). Complex 1 has an asymmetrical dinuclear structure, which are further assembled into a one-dimensional (1D), and then two-dimensional (2D) network via intra- and/or inter-molecular C–H···Pd and C–H···Cl H-bonding interactions from different crystallographic directions. This work offers a new example in which the N donor of the acridine ring coordinates to a metal ion in a supramolecular coordination system.  相似文献   

6.

Abstract  

Pyridine-2,6-dicarboxylic acid (dipic) was used for the synthesis of a co-crystal with 1,10-phenanthroline-5,6-dione (phen-dione) and a nickel(II) complex. The co-crystal dipic·phen-dione·4H2O (1) has been synthesized and studied by X-ray crystallography. The structure is stabilized with hydrogen bonds between dipic, H2O and phen-dione. It is surprising that there is no direct hydrogen bonding between phen-dione and dipic and yet the molecules co-crystallize in aqueous solution. A new complex of nickel(II), [Ni(phen)(dipic)(H2O)]·4H2O (2), (where phen = 1,10-phenanthroline) has been synthesized and characterized by elemental and thermogravimetric analyses, FT-IR, UV–Vis and 1H-NMR spectroscopy. The structure of (2) has been studied by X-ray crystallography. The coordination around Ni(II) is a distorted octahedron. The crystal packing shows that the dimensionality of (2) is enlarged to 3D, through hydrogen bonds and π–π interactions. Cyclic voltammetry of (2) shows that the Ni(II/I) couple is irreversible.  相似文献   

7.
合成了一个新的锌配合物[Zn(8-ahsb)(N3)](1)(8-ahsb=8-氨基喹啉水杨醛席夫碱阴离子),并对其进行了元素分析、红外光谱和X-射线单晶衍射表征.配合物1属于单斜晶系,空间群为C2/c,a=0.6762(3)nm,b=2. 2842(9)nm,c=1.8162(8)nm,β=91.309(7)°,V=2.805(2)nm3,Z=8.中心离子Zn(II)为三角双锥配位构型,分别与四个N原子、一个氧原子配位,其中1个8-氨基喹啉席夫碱配体提供了2个N原子、一个氧原子,剩余两个N原子分别来自于两个N3-阴离子,且每个N-3桥联邻近的两个Zn2+形成一维无限链状结构.荧光光谱的分析表明该化合物具有强的绿色发光性能,且可作为荧光探针检测低浓度的铜离子.  相似文献   

8.

Abstract  

The reaction of Ho(NO3)3 with the bulky anthracene-9-carboxylic acid (HL) and 1,10-phenanthroline (phen) in the presence of 2,6-dimethylpyridine afforded a dinuclear HoIII complex [Ho2(L)6(phen)2] (1) (L = anthracene-9-carboxylate), which was characterized by elemental analysis and single-crystal X-ray diffraction analysis (triclinic system, space group Pī, with a = 12.4994(3), b = 13.3556(3), c = 14.9751(3) ?, α = 110.7630(1), β = 103.0680(1), γ = 106.8530(1)°, V = 2080.59(9) ?3, and Z = 1). Complex 1 has a centrosymmetric binuclear cage structure in which two HoIII atoms are both nine-coordinated and bridged by four bulky anthracnene-9-carboxylate (L) ligands with a non-bonding Ho∙∙∙Ho separation of 3.9076 (2) ?. The anthracene-9-carboxylate groups coordinate each HoIII atom in three different ways. The adjacent discrete dinuclear subunits are arranged into a one-dimensional (1D) chain along the [111] direction by intermolecular π···π stacking interactions, with the centroid–centroid separation of 3.724(2) ?.  相似文献   

9.
Abstract A new complex [Co(H2pztc)(bpy)H2O] (H4pztc = pyrazine-2,3,5,6-tetracarboxylic acid, bpy = 2,2′-bipyridine) has been synthesized by hydrothermal reactions of Co(NO3)2 · 6H2O with H4pztc and bpy and characterized by IR and X-ray diffraction single crystal structure analysis. It belongs to monoclinic system, P21/c space group with a = 13.454(2) ?, b = 12.939(2) ?, c = 11.4993(19) ?, α = 90°, β = 111.640(3)°, γ = 90°. This complex is assembled into 3D supramolecular architecture by hydrogen bonds (O–H···O, C–H···O). Index Abstract A new complex of cobalt(II) with pyrazine-2,3,5,6-tetracarboxylic acid and 2,2′-bipyridine is assembled by intermolecular hydrogen bonds forming 2D layer and 3D supramolecular network.   相似文献   

10.
Abstract  Bis(isothiocyanato)-bis(pyridine) zinc(II) crystal has been prepared at room temperature and characterized by elemental analysis, IR spectrum and X-ray single crystal determination. The complex crystallizes in monoclinic space group P21/m with unit cell parameters: a = 5.5786(3), b = 11.0587(5), c = 12.1616(6) ?, β = 96.776(3)°, V = 745.03(6) ?3, Z = 2, D = 1.514 g cm−3. The X-ray structure determination has revealed that the crystal is centered-symmetrical and the crystallographic symmetry face runs the two isothiocyanate ligands and the Zn(II) cation. Index Abstract  The title compound, bis(isothiocyanato)-bis(pyridine) zinc(II), was synthesized by zinc compound, KSCN and C5H5N (pyridine) and its crystal structure was determined. Single crystal X-ray structure determination reveals that the crystal is centered-symmetrical, and the crystallographic symmetry face runs the two isothiocyanate ligands and the Zn(II) cation.   相似文献   

11.
12.
Abstract  2,6-Diacetylpyridinebis(benzenesulfonylhydrazide) (2,6-DAPBSH) and its zinc(II) complex have been synthesized and characterized by X-ray crystallography. The ligand crystallizes in the monoclinic crystal system, space group Cc, with cell parameter = 16.808(2) Ǻ, b = 16.328(2) Ǻ, c = 8.2670(11) Ǻ, β = 91.869(9)°, while the zinc(II) complex crystallizes in the orthorhombic crystal system, space group Pbcn, with cell parameters a = 14.5927(3) Ǻ, b = 9.6502(2) Ǻ, c = 20.5610(5) Ǻ. The metal center is seven-coordinate, with an approximate pentagonal bipyramidal configuration of the chelating ligand and two apically coordinated DMSO molecules. Graphical Abstract  X-ray crystallographic study on the [2,6-diacetylpyridine—bis(benzenesulfonylhydrazonato-κ5 NN′′N′′′OO′′)]bis(dimethyl sulfoxide-κO)zinc(II) (Fig. 1) shows that the complex is a seven-coordinate, with an approximate pentagonal bipyramidal configuration where the ligand coordinates to the zinc(II) ion as a pentadentate chelate via the pyridine nitrogen atom, the two azomethine nitrogen atoms and the two sulfonyl oxygen atoms.   相似文献   

13.
A novel metal-organic supramolecular complex [Zn2 (Zaltoprofen)2(phen)2] (where Zaltoprofen = 5-(1-carboxyethyl)-2-(phenylthio)phenylacetic acid, phen = 1,10-phenanthroline) has been synthesized under hydrothermal condition and characterized by single crystal X-ray diffraction, elemental analysis, spectral method (IR), powder X-ray diffraction (XRD), electronic Spectra (UV-vis), and fluorescent properties. The compound crystallizes in the monoclinic P2(1)/c space group. [Zn2(Zaltoprofen)2(phen)2] features 0-D structural, the π–π stacking interactions and C?H···O hydrogen-bonds play a vital role in determining the crystal packing and construction of the extended 3-D supramolecular network.  相似文献   

14.

Abstract  

A novel 3,4,7,8-tetrachloro-1,10-phenanthroline (Cl4phen) Zn(II) complex has been synthesized. The complex, [Zn(Cl4phen)2(H2O)2](NO3)2·CH3CH2OH (1), has been identified and characterized by single crystal X-ray diffraction, elemental analysis, FT-IR, thermogravimetric analysis and photoluminescence studies. Single crystal X-ray diffraction analysis reveals that complex (1) belongs to the monoclinic system, space group P2(1)/c, a = 10.061(2) Å, b = 18.924(4) Å, c = 18.189(4) Å, β = 100.94(3)°, and Z = 4. Complex (1) consists of cationic species [Zn(Cl4phen)2(H2O)2]2+, NO3 and CH3CH2OH. The zinc atom displays a distorted cis-N4O2 octahedral geometry. Via extended Zn–O–H···O–N–O···H–O–Zn bridge, every mononuclear unit is linked with other ones to form one-dimensional (1D) infinite chain of hydrogen bond system. Three-dimensional (3D) polymeric network arrangement was built via weak C–H···O and π-stacking interactions between Cl4phen moieties. A solvent-dependency effect of complex (1) was observed in spectroscopic properties.  相似文献   

15.

Abstract  

A new three-dimensional (3-D) supramolecular complex, [Cu2(btec)(bpo)2(H2O)2]·8H2O (1), has been synthesized by hydrothermal reaction with the mixed ligands benzene-1,2,4,5-tetracarboxylate (btec) and bent dipyridyl based ligand 2,5-bis(3-pyridyl)-1,3,4-oxadiazole (bpo), and structurally characterized by elemental analysis, IR, TG, powder-XRD and single-crystal X-ray diffraction analysis. The results reveal that each Cu(II) ion is bridged by two different ligands (btec and bpo) to form a 2-D polymer layer in complex 1. The adjacent layers are further linked by 1-D H-bonded water chains simultaneously containing (H2O)6 rings and (H2O)8 rings to form a 3-D supramolecular framework. Moreover, the electrochemical behavior of complex 1 bulk-modified carbon paste electrode (1-CPE) has been reported.  相似文献   

16.
17.
Abstract  The title compound 1,3-bis(p-nitrophenoxy)propane was synthesized by nucleophilic substitution of p-nitrophenol and 1,3-dibromopropane. Single crystal X-ray diffraction analysis reveals that the molecule in the solid state packs in the monoclinic P2/n space group with crystal cell parameters a = 17.465(5) ?, b = 4.8433(13) ?, c = 17.610(5) ?, β = 100.290(6)o, V = 1465.6(7) ?3, Dcalc = 1.442 g/cm−3. Two half-molecules are located in the asymmetric unit which are each completed by twofold symmetry making Z = 4, Z′ = 1. Index Abstract  The title compound 1, 3-bis (p-nitrophenoxy) propane was prepared from p-nitrophenol and 1, 3-dibromopropane, crystallized from an ethanolic solution, and the structure was obtained by single crystal X-ray diffraction: monoclinic, P2/n, a = 17.465(5) ?, b = 4.8433(13) ?, c = 17.610(5) ?, β = 100.290(6)°, V = 1465.6(7) ?3.   相似文献   

18.
以对氨基苯甲酸、邻菲罗啉和与Zn(Ⅱ)通过溶剂扩散法得到配合物[Zn(C7H6O2N)(C12H8N2)Cl]浅黄色颗粒状晶体,通过元素分析、红外光谱、TG分析等方法对其进行了表征,并对目标配合物的荧光性质进行了探讨.X-射线单晶衍射分析表明,该配合物晶体属于单斜晶系,空间群为C2/c,晶体结构中丰富的氢键将分子连接成三维无限网络结构.生长调节实验表明:该配合物对水稻种子的萌发生长具有明显的调控作用,表现出低浓度下促进高浓度抑制的整体态势.  相似文献   

19.
Abstract  A new cadmium(II) complex [(C28H24N6)Cd(SCN)2]2(CH3OH)2 (1) has been synthesized and characterized by IR, UV spectra, TG-DTA technique and single crystal X-ray diffraction analysis. The crystallographic data for compound 1: triclinic P1ˉ, a = 9.630(2) Å, b = 11.123(3) Å, c = 15.396(4) Å, α = 106.93(1)°, β = 91.60(1)°, γ = 99.99(1)°, V = 1,548.5(6) Å3, Z = 1, Dc = 1.512 mg/m3, F(000) = 716, R 1 = 0.0332, wR 2 = 0.0907. The molecule contains a symmetrical dinuclear unit in which two Cd(II) ions are double bridged by two di-μ-1,3-SCN anoins with a cadmium–cadmium separation of 6.48 Å. Each Cd(II) ion is seven-coordinated with six nitrogen atoms and a sulfur atom to form a monocapped trigonal prism coordination geometry. In addition, the molecule is further connected by multiform intermolecular C–H···π, π···π interactions and hydrogen bonds to form a three-dimensional supramolecular structure. Graphical Abstract  A hepta-coordinated Cd(II) complex which exhibits a distorted a monocapped trigonal prism coordination geometry has been achieved by using bisbidentate Schiff-base ligand and thiocyanate anion.   相似文献   

20.
Crystallography Reports - Copper complex [Cu-3Br-salen]] (3-Br-salen = N,N'-bis(3-bromosalicylidene)ethylene-1,2-diamine) is synthesized as a part of the research work of exploring the...  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号