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1.
A chloro-bridged dinuclear copper(II) complex with ligand 2-pyridylme-thylene-furfurylamine has been synthesized and characterized by single-crystal X-ray diffraction, and its inhibitory activity on xanthine oxidase (XO) was also evaluated. It crystallizes in the triclinic system, space group P1 with a=8.0441(16), b=8.5663(17), c=10.060(2), α=77.52(3), β= 72.04(3), γ=70.12(3)°, V=615.3(2)3, Z=1, Dc=1.731 g/cm3, F(000)=322, the final R= 0.0401 and wR=0.0934 for 1971 observed reflections with I > 2σ(I). X-ray analysis reveals that the Cu(II) cation is five-coordinated by two N atoms of Schiff base and three Cl anions. The C-H…Cl intermolecular and intramolecular hydrogen bonds connect the molecules to form a three-dimensional network. This copper(II) complex shows more potent inhibitory activity against XO with IC50=3.48 μM than the standard inhibitor allopurinol.  相似文献   

2.
Reaction of the ligand dmpt(dmpt=6,7-dimethylbenzo[f][1,10]phenanthroline)with CuCl_2 afforded mixed valent Cu(Ⅰ)/Cu(Ⅱ) discrete tetranuclear complexes[Cu(Ⅱ)Cl_2(dmpt)Cu(Ⅰ)Cl](1),while the reaction of ligand dppz(dppz = dipyrido[3,2-a:20,30-c]phenazine) with divalent halogen copper salt CuX_2(X=Cl,Br) gave one-dimensional chain mixed valent Cu(Ⅰ)/Cu(Ⅱ) complexes [Cu(Ⅱ)Cl_2(dppz)Cu(Ⅰ)Cl]_n(2) and discrete mixed valent Cu(Ⅰ)/Cu(Ⅱ)complexes [Cu(Ⅱ)Br_2(dppz)(DMF)Cu(Ⅰ)Br](3). Complex 2 consists of a one-dimensional chain-dppzC u(Ⅱ)-Clμ_2-Cu(Ⅰ)-Cl-dppzC u(Ⅱ)-Clμ_2-Cu(Ⅰ)-with Cu(Ⅱ) and Cu(Ⅰ) atoms linked together by chloride anion. Complex 3 is a discrete complex,which is the same as complexes 1 and 2 involving two different copper valent Cu(Ⅰ) and Cu(Ⅱ). The Cu(Ⅰ) ion presents a pseudo-trihedral geometry,while the Cu(Ⅱ) ion presents a slightly distorted square-pyramidal geometry. This fact proved that halogen ions play a vital role in the assembly procedure. Our research results demonstrate the structural diversification that can be achieved by halogen ions mediated. Moreover,halogen ions-mediated self-assembly may provide useful information for further design of compounds with novel structures and properties.  相似文献   

3.
The mixed-valence manganese(Ⅲ/Ⅳ) complex [Mn2(cyclen)2(μ-O)2](ClO4)3-4H2O (1) (cyclen=1,4,7,10-tetraazacyclododecan) with chemical formula C16H48Cl3Mn2N8O18 has been synthesized and characterized by single crystal X-ray diffraction analysis, elemental analysis, IR and electronic spectra. The results showed that the manganese(Ⅲ/Ⅳ) ions were six-coordinated by four nitrogen atoms from cyclen and two oxygen atoms from the oxygen bridge, forming a distorted octahedron geometry. There were two very strong peaks in the range of 400-700 nm in electronic spectrum, which was similar to Mn catalase and Mn ribonucleotide reductase extracted from organisms.Electrochemical study indicated that the complex underwent a quasi-reversible one-electron reduction and oxidation at E1/2=0.827 V in acetonitrile.  相似文献   

4.
Two novel complexes, [Cd2(BMQU)2Cl4] (1) and [Ni(BMQU)2HPO4]·1.5H2O (2) (BMQU = 2-(2-benzimidazolyl)quinoline), were synthesized by the hydrothermal method and characterized by elemental analysis, IR, and TG-DTG. The crystal structures were determined by single-crystal X-ray diffraction. Both 1 and 2 crystallize in the triclinic system, space group P . The data for 1: a = 0.8342(7), b = 0.9226(9), c = 1.0646(8) nm, α = 90.819(2), β = 97.466(2), γ = 98.280(2)°. The Cd(Ⅱ) is coordinated with three chlorine atoms and two nitrogen atoms of a BMQU molecule, generating a distorted square-pyramidal geometry. The dinuclear Cd(Ⅱ) complex is formed by two chlorine bridge bonds, and the one-dimensional chain structure is constructed with the hydrogen bond N-H…Cl and π-π stacking interaction. The data for 2: a = 1.2251(1), b = 1.2451(1), c = 1.2868(1) nm, α = 107.510(2), β = 98.630(1), γ = 109.921(2)°. The Ni(Ⅱ) is coordinated with four nitrogen atoms of two BMQU molecules and two oxygen atoms of a HPO42-, forming a distorted-octahedral geometry. The two-dimensional layer structure is formed by the hydrogen bonds and π-π stacking interaction between neighboring molecules. Complex 1 shows a strong blue fluorescence emission (λmax= 456 nm) at solid state.  相似文献   

5.
A new binuclear copper complex, [Cu2L2(pht)2]2·H2O(Hpht = 5,5-diphenylhydantoin, i.e. phenytoin; L = 2-diethylaminoethanol), has been synthesized by the solvothermal method, and characterized by elemental analysis, IR and single-crystal X-ray diffraction. The crystal belongs to the monoclinic system, space group C2/c with a = 31.918(3), b = 12.9222(15), c = 19.868(2) , β = 98.762(2)o, V = 8098.8(16) 3, Dc = 1.429 Mg/m3, Z = 4, F(000) = 3640, μ = 1.107 mm-1, R = 0.0560 and wR = 0.1276(I 2(I)). Each copper(Ⅱ) in a molecule is coordinated with N and O atoms from ligand L and N atom from ligand Hpht in a tetradentate manner. Moreover, two copper(Ⅱ) centers are bridged by two O atoms of hydroxyl groups from two L ligands to form a slightly distorted binuclear {Cu2O2} diamond configuration. In addition, the interaction of this complex with calf thymus DNA(CT-DNA) was investigated by UV-vis spectrum and viscometry, and the complex may bind to DNA through intercalation.  相似文献   

6.
The metal-organic compound [Cu(MOPIP)2(OH)2] 1(MOPIP = 2-(4-methoxy-phenyl)-1H-imidazo[4,5-f][1,10] phenanthroline) was hydrothermally synthesized and structurally characterized by elemental analysis,Fourier-transformed infrared spectroscopy,thermogravimetric analysis,single-crystal X-ray diffraction and theoretical calculations in Gaussian 03.In the crystal structure,the copper(Cu) atoms are tetra-coordinated with four different nitrogen atoms from two different MOPIP ligands,and the Cu atom is one of the five vertexes of the tetrahedron.Presumably due to the steric bulk of the phenyl ligands,compound 1 adopts a slightly distorted tetrahedral configuration.Moreover,it exhibits a zero-dimensional structure with Cu-MOPIP as the building units.Natural Bond Orbital(NBO) analysis was performed by using the NBO method built in Gaussian 03 Program.The calculation results showed a covalent interaction between the coordinated atoms and Cu(Ⅱ) ion.  相似文献   

7.
A new dinuclear copper complex, [Cu(C9H11N3)Cl2]2(C18H22Cl4Cu2N6), has been synthesized and characterized by X-ray structure determination. It crystallizes in the triclinic P-1 space group with a = 7.526(3), b = 9.473(4), c = 9.535(3)(A), α = 117.214(10), β = 108.251(9), γ = 91.560(6)°, V = 562.3(4)(A)3, Z = 1, Mr = 591.30, F(000) = 298, Dc = 1.746 g/cm3, μ(MoKα) = 2.385 mm-1, the final R = 0.0577 and wR = 0.1248 for 2188 unique reflections with 1629 observed ones (Ⅰ> 2σ(Ⅰ)). In the title complex, each copper(Ⅱ) atom is located at the center of a distorted trigonal bipyramid of five coordination atoms (two nitrogen and three chlorine atoms). Two copper(Ⅱ) atoms were bridged by two chlorine anions (Cl(2) and Cl(2a)) to form a Cu(Ⅱ)-Cu(Ⅱ) binuclear entity with the distance between two copper(Ⅱ) atoms of 3.398 (A).  相似文献   

8.
The title compound, [Cu3(dmpzm)4(μ-1,3-dca)2(dca)4]·2H2O (dmpzm = 1,1'-methyle- nebis(3,5-dimethyl-1H-pyrazole), dca = dicyanamide) 1·2H2O, was synthesized via the reaction of CuCl2·2H2O with dmpzm and Na(dca), and characterized by elemental analysis and IR spectra. 1·2H2O crystallizes in the monoclinic system, space group C2/m with a = 13.578(3), b = 16.769(3), c = 14.769(3)(A),β=104.10(3)°, V = 3261.4(11)(A)3, Z = 2, Dc = 1.466 g/cm3, T = 153(2) K, C56H68N34O2Cu3, Mr = 1440.09, F(000) = 1490, μ(MoKα) = 1.040 mm(1, S = 1.150, R = 0.0553 and wR = 0.1123 for 2744 observed reflections with I > 2σ(I). The central copper atom is chelated by two dmpzm ligands and coordinated by two bridging dca anions, forming a slightly distorted octahedral geometry. The two external copper atoms adopt a square-pyramidal coordination geometry, coor- dinated by one chelating dmpzm ligand and one bridging and two terminal dca anions. Two inter- molecular hydrogen bonding interactions result in the formation of a 2D (4,4) hydrogen-bonded network.  相似文献   

9.
A new dinuclear copper complex, [Cu(C9H11N3)Cl2]2 (C18H22Cl4Cu2N6), has been synthe- sized and characterized by X-ray structure determination. It crystallizes in the triclinic P1 space group with a = 7.526(3), b = 9.473(4), c = 9.535(3) , α = 117.214(10), β = 108.251(9), γ = 91.560(6)o, V = 562.3(4) 3, Z = 1, Mr = 591.30, F(000) = 298, Dc = 1.746 g/cm3, μ(MoKα) = 2.385 mm-1, the final R = 0.0577 and wR = 0.1248 for 2188 unique reflections with 1629 observed ones (I > 2σ(I)). In the title complex, each copper(II) atom is located at the center of a distorted trigonal bipyramid of five coordination atoms (two nitrogen and three chlorine atoms). Two copper(II) atoms were bridged by two chlorine anions (Cl(2) and Cl(2a)) to form a Cu(II)-Cu(II) binuclear entity with the distance between two copper(II) atoms of 3.398 .  相似文献   

10.
《结构化学》2021,40(4):453-458
A new binuclear copper(Ⅱ) complex[Cu_2(MBBA)_2(HPT)_2(H_2O)_2]·2H_2O (1) was synthesized with copper acetate,2-(4-methylbenzoyl) benzoic acid (MBBA) and 3-(pyridin-2-yl)-1H-1,2,4-triazole (HPT).It crystallizes in the monoclinic space group P2_1/c with a=14.722(2),b=8.8907(12),c=18.5565(18)?,β=116.820(7)o,V=2167.6(5)?~3,M_r=483.96,D_c=1.483 g/cm~3,Z=4,μ(Mo Ka)=1.049 mm~(-1),F(000)=981,the final GOOF=0.952,R=0.0586 and w R=0.0823.The whole molecule consists of two copper ions bridged by two HPT molecules.The central Cu(Ⅱ) ion is coordinated by six atoms to give a distorted octahedral coordination geometry.The structure of 1 has been determined by X-ray diffraction,IR spectrum and thermal stability analysis.The solid-state fluorescence displays an obvious emission band at 412 nm upon excitation at 330 nm.Magnetic properties indicate that 1 exhibits antiferromagnetic properties.  相似文献   

11.
A chloro-bridged dinuclear copper(Ⅱ) complex with ligand 2-pyridylme-thylene-furfurylamine has been synthesized and characterized by single-crystal X-ray diffraction,and its inhibitory activity on xanthine oxidase(XO)Was also evaluated.It crystallizes in the triclinic system,space group P-1 with a=8.0441(16),b=8.5663(17),c=10.060(2)(A),α=77.52(3),β=72.04(3),γ=70.12(3)°,V=615.3(2)(A)3,Z=1,Dc=1.731 g/cm3,F(000)=322,the final R=0.0401 and wR=0.0934 for 1971 observed reflections with Ⅰ>2σ(Ⅰ).X-ray analysis reveals that the Cu(Ⅱ)cation is five-coordinated by two N atoms of Schiff base and three C1 anions.The C-H…Cl intermolecular and intramolecular hydrogen bonds connect the molecules to form a three-dimensional network.Tilis copper(Ⅱ) complex shows more potent inhibitory activity against XO with Ⅰ C50=3.48/μM than the standard inhibitor allopurinol.  相似文献   

12.
A Cu(II) complex of tetra(3,5-diphenyl pyrazole) [Cu(C15H12N2)2Cl2]2 (1) was synthesized, and its structure was determined by single-crystal X-ray diffraction and further characterized by elemental analysis, NMR and IR. 1 belongs to the monoclinic system, space group P21/c with a = 13.3780(5), b = 15.1392(6), c = 15.5923(6) , β = 124.522(2)°, Z = 2 and V = 2601.86(17) 3. In 1, each Cu2+ ion is coordinated with two N atoms from two tetra(3,5-diphenyl pyrazole) ligands and three Cl- anions to give a distorted square-pyramidal geometry, which is further linked through edge-sharing bridging by Cl- anions to form a centrosymmetric dinuclear structure.  相似文献   

13.
Two novel mononuclear complexes with 5-chloro-8-(methoxycarbonylmethoxy)quinoline ligand(L), namely, HgLBr_2 1 and CuL_2Cl_2 2, have been prepared by solvothermal reaction of(5-chloro-quinolin-8-yloxy)acetic acid with HgBr_2 and CuCl_2, respectively. Their structures were characterized by IR, elemental analysis, UV-Vis-NIR spectra, TG and single-crystal X-ray diffraction analysis. Interestingly,(5-chloro-quinolin-8-yloxy)acetic acid is changed as 5-chloro-8-(methoxycarbonylmethoxy)quinoline ligand(L) in complexes 1 and 2. Crystal data for 1: C12H10Br2 Cl Hg NO3, Mr = 612.07, triclinic, space group P1 with a = 8.5983(7), b = 9.7726(6), c = 10.1549(6) ?, α = 66.355(6), β = 77.067(8), γ = 78.803(8)°, V = 756.6(9) ?3, Z = 2, Dc = 2.687 g/cm3, F(000) = 560, μ = 15.633 mm-1, R = 0.0351 and w R = 0.0504. Crystal data for 2: C24H20Cl4 Cu N2O6, Mr = 637.76, triclinic, space group P1 with a = 10.5324(9), b = 11.2377(16), c = 12.0143(12) ?, α = 83.413(11), β = 64.475(9), γ = 83.144(11)°, V = 1270.9(2) ?3, Z = 2, Dc = 1.667 g/cm3, F(000) = 646, μ = 1.324 mm-1, R = 0.0408 and w R = 0.0922. In 1, the HgII centre is a distorted trigonal planar geometry comprised of two Br atoms and one quinoline N atom of L. Intermolecular π-π, C–H···π stacking interactions and intermolecular C–H···Br hydrogen bonds are observed in the molecular packing of 1. In complex 2, each CuII center has a distorted octahedral geometry comprised of two chloride ions, two quinoline N atoms and two O atoms of two L ligands. Intermolecular C–H···Cl hydrogen bonds exist in the molecular packing of 2. The fluorescence emission peak of complexes 1 and 2 appears near 406 and 410 nm, respectively. Optical diffuse-reflection spectral results suggest complex 1 has the property of semiconductor.  相似文献   

14.
A planar copper complex Cu(L)2,HL=(E)-benzyl-2-(4-formylbenzylidene)-Hydrazinecarbodithioate,has been prepared via the template effect of copper ion. Crystal structure of the complex was determined by X-ray singlecrystal diffraction analysis. The crystal data for this complex:Orthorhombic,space group Pbcn,a=2.250 0(14) nm,b=1.660 0(11) nm,c=0.830 4(5) nm,V=3.102(3) nm3,Z=4,μ=1.011 mm-1,Dc=1.478 g·cm-3,F(000)=1 420,R1= 0.050 1,wR2=0.087 2 (observed reflections with I2σ(I)) and R1=0.129 1,wR2=0.100 9 (all reflections) GOF= 1.011. In the compound,Cu(Ⅱ) atom is four-coordinated with two N atoms and two S atoms from two bidentate ligands and located in the inversion center. The preliminary bioassay indicates that the complex exhibits distinct antitumor activity.  相似文献   

15.
Self-assembly of Ag(I) nitrate, 1,3-bis(4-pyridyl)propane (bpp) and phthalic acid monopotassium salt (KHphth) in CH3OH-H2O solution produced the title complex, {[Ag(bpp)]2(Hphth)(NO3)·(H2O)2}n, which was characterized by single-crystal X-ray diffraction, elemental analysis, IR spectrum, and photoluminescent spectrum. Single-crystal X-ray analysis revealed that the complex crystallizes in a monoclinic system, space group P21/c, with a = 15.4174(5), b = 8.6398(2), c = 25.2466(8) , β = 91.072(1)o, V = 3362.34(17) 3, Z = 4, C34H37N5O9Ag2, Mr = 875.43, Dc = 1.729 g/cm3, μ = 1.228 mm-1, F(000) = 1768, the final R = 0.0749 and wR = 0.1580 for 5754 reflections with I > 2σ(I). The Ag atom is coordinated by two N atoms from two bpp molecules in an approximately linear geometry. The Ag(I) ions are linked by the bpp molecules to form one-dimensional zigzag chains propagating along the c axis. The Hphth- and nitrate counter-ions are bridged by solvent water molecules through hydrogen bonds to generate a one-dimensional chain extending along the b axis. Electrostatic interactions between cations and anions, extensive hydrogen bonds and π-π interactions are responsible for the three-dimensional supramolecular structure. In the solid state, the compound exhibits blue photoluminescence with the maximum at 436 nm upon excitation at 344 nm.  相似文献   

16.
A novel copper(Ⅱ) complex with the reduced Schiff base, [Cu(L)_2]·H_2O(I, HL = N-(4-hydroxybenzyl)-L-serine), was prepared in aqueous solution and characterized by elemental analysis, FT-IR, electrospray ionization mass spectrometry and single-crystal X-ray diffraction. Complex I crystallizes in the orthorhombic system, space group P212121, with a = 8.9040(18), b = 9.1530(18), c = 24.891(5) ?, V = 2028.6(7) ?3, Z = 4, C_(20)H_(26) Cu N_2O_9, Mr = 501.97, Dc = 1.644g·cm3, μ = 1.135 mm-1, F(000) = 1044, GOOF = 1.194, the final R = 0.0484 and w R = 0.1420 for 6186 observed reflections(I 2σ(I)). In I, two L- anions are coordinated to the copper ion in tridentate and bidentate chelating modes, respectively, resulting in the coordinated geometry of copper ion to be a distorted square pyramid. The intermolecular hydrogen bonds between the complexes, complexes and lattice water molecules lead to a 2D supramolecular network. The bioactivity of the complex as a potential PTPs inhibitory agent in vitro was investigated, displaying potent inhibition against PTP1B(IC50, 0.27 μM) and TCPTP(IC50, 0.57 μM) with a moderate selectivity.  相似文献   

17.
A new copper(Ⅱ) compound has been prepared and fully characterized by elemen-tal analysis,IR,TG and single-crystal X-ray diffraction.The compound [Cu(4-hba)2(inta)(H2O)]·H2O (4-hba=4-hydroxybenzoic acid,inta=isonicotinamide) 1 crystallizes in the monoclinic system,space group P21/c with a=7.590(5),b=11.027(5),c=23.761(5),β=102.5740(10)o,V=1974.1(16) 3,Mr=991.84,Z=2,Dc=1.669 g/cm3,F(000)=1020,μ=1.166 mm-1,R=0.0353 and wR=0.0604 for 3166 observed reflections (I 2σ(I)).In compound 1,the copper cation is penta-coordinated with two carboxylate oxygen atoms from two different 4-hba ligands,two oxygen atoms from two coordinated water molecules and one nitrogen atom from inta ligand,showing a slightly distorted square-pyramidal geometry.  相似文献   

18.
A new copper(Ⅱ) complex[Cu(PDA)(H2O)2] was synthesized and its structure was determined.Cu(Ⅱ)is five-coordinated in a tetragonal pyramid geometry.The two coordinating water molecules are different and the two Cu-O bond lengths differ by nearly 0.02nm.The whole crystal is linked to form a three-dimensional network by means of hydrogen bonds.The X-band ESR spectrum shows three different g tensors with a well-resolved hyperfine structure in the gz signal,giving the ESR parameters gx=2.05,gy=2.065 and gz=2.29.The covalency of the coordinate bonds and the deviation from tetragonal pyramid geometry for the complex are discussed based on the ESR spectra.  相似文献   

19.
Mononuclear copper( Ⅰ ) complex [Cu(PPh3)2(BH4)] has been synthesized by ligand replacement reaction in methanol and characterized by elemental analyses, molecular weight determination, IR spectra and X-ray single crystal analysis,its conductivity has also been measured. The crystal is monoclinic, space group C2/c, a =24.776(4), b=9.173(7), c=15.564(2)A; β=116.10(1)°, V=3176.73 A3, Z =4, F(000)=1256, μ(MoKα)=8.11 cm-1, Dc=1. 26 g/cm3, M=602.79, R=0. 039, Rw= 0. 050. The results show that PPh3 coordinates as monodentate ligand to the Cu ( Ⅰ ) atoms, and BH4 behaves as a bidentate ligand in the prepared complex.The central copper atom belongs to tetrahedron coordination geometry.  相似文献   

20.
Self-assembly of Ag(Ⅰ) nitrate, 1,3-bis(4-pyridyl)propane (bpp) and phthalic acid monopotassium salt (KHphth) in CH3OH-H2O solution produced the title complex,{[Ag(bpp)]2(Hphth)(NO3)·(H2O)2}n, which was characterized by single-crystal X-ray diffraction,elemental analysis, IR spectrum, and photoluminescent spectrum. Single-crystal X-ray analysis revealed that the complex crystallizes in a monoclinic system, space group P21/c, with α =15.4174(5), b = 8.6398(2), c = 25.2466(8) (A), β = 91.072(1)°, V = 3362.34(17) (A)3, Z = 4,C34H37N5O9Ag2, Mr = 875.43, Dc = 1.729 g/cm3, μ = 1.228 mm-1, F(000) = 1768, the final R =0.0749 and wR = 0.1580 for 5754 reflections with I > 2σ(I). The Ag atom is coordinated by two N atoms from two bpp molecules in an approximately linear geometry. The Ag(Ⅰ) ions are linked by the bpp molecules to form one-dimensional zigzag chains propagating along the c axis. The Hphth-and nitrate counter-ions are bridged by solvent water molecules through hydrogen bonds to generate a one-dimensional chain extending along the b axis. Electrostatic interactions between cations and anions, extensive hydrogen bonds and π-π interactions are responsible for the three-dimensional supramolecular structure. In the solid state, the compound exhibits blue photoluminescence with the maximum at 436 nm upon excitation at 344 nm.  相似文献   

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