The novel dinuclear copper(Ⅱ) complex with with N (2,4 dihydroxybenzalidene) o aminobenzoic acid ligand, [Cu(C14H9NO4)]2· 2H2O, has been synthesized and characterized by elemental analysis, IR, UV Vis and therma...The novel dinuclear copper(Ⅱ) complex with with N (2,4 dihydroxybenzalidene) o aminobenzoic acid ligand, [Cu(C14H9NO4)]2· 2H2O, has been synthesized and characterized by elemental analysis, IR, UV Vis and thermal analysis. Its crystal structure was determined by single crystal X ray diffraction techniques. The crystal belongs to monoclinic with space group P21/c. The cell parameters are: a=0.82510(11)nm, b=0.68870(9)nm, c=2.3007(3)nm, β =100.847(2)° , V=1.2840(3)nm3, Z=2, Dc=1.742Mg· m- 3, μ (MoKα )=1.723mm- 1, F(000)=684. The structure was refined to final R1=0.0267, wR2=0.0735. The complex molecule structure has dinuclear centrosymmetric dimeric structure in which a planar Cu2O2 core features. The ligand N (2,4 dihydroxybenzalidene) o aminobenzoic acid dianion is μ 2 tridentate, chelating one copper? ion via one nitrogen, one hydroxy oxygen atom and one carboxylate oxygen atom, and the hydroxy oxygen atom simultaneously coordinates to the other copper? ion of the dimer. In the structure the copper? ion rendered four coordination in a distorted square planar geometry structure. CCDC: 212695.展开更多
Two Cu(Ⅱ) complexes with title Schiff base ligand H 2L, micro crystal Cu(HL)ClO 4·H 2O and single crystal , have been synthesized and characterized by IR spectra, etc .. By cyclic voltammetry, a quasi reversible...Two Cu(Ⅱ) complexes with title Schiff base ligand H 2L, micro crystal Cu(HL)ClO 4·H 2O and single crystal , have been synthesized and characterized by IR spectra, etc .. By cyclic voltammetry, a quasi reversible electron transferring process has been shown in Cu(Ⅱ)/Cu(Ⅰ) couples reaction of ; the given value E 0 1/2 =-0.73 V has been estimated. The structure of has been determined by X ray diffraction with R =0.036. The results indicate that the deprotonic ligand, as a practically tetradentate, coordinates only with its two imino and two phenoxo groups to form a D 2d symmetric geometry. Two different torsional modes of the homologous ligands, occurring in mono and di nuclear Cu(Ⅱ) complexes, respectively, have been contrasted and discussed.展开更多
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 singlecrys...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 I>2σ(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.展开更多
文摘The novel dinuclear copper(Ⅱ) complex with with N (2,4 dihydroxybenzalidene) o aminobenzoic acid ligand, [Cu(C14H9NO4)]2· 2H2O, has been synthesized and characterized by elemental analysis, IR, UV Vis and thermal analysis. Its crystal structure was determined by single crystal X ray diffraction techniques. The crystal belongs to monoclinic with space group P21/c. The cell parameters are: a=0.82510(11)nm, b=0.68870(9)nm, c=2.3007(3)nm, β =100.847(2)° , V=1.2840(3)nm3, Z=2, Dc=1.742Mg· m- 3, μ (MoKα )=1.723mm- 1, F(000)=684. The structure was refined to final R1=0.0267, wR2=0.0735. The complex molecule structure has dinuclear centrosymmetric dimeric structure in which a planar Cu2O2 core features. The ligand N (2,4 dihydroxybenzalidene) o aminobenzoic acid dianion is μ 2 tridentate, chelating one copper? ion via one nitrogen, one hydroxy oxygen atom and one carboxylate oxygen atom, and the hydroxy oxygen atom simultaneously coordinates to the other copper? ion of the dimer. In the structure the copper? ion rendered four coordination in a distorted square planar geometry structure. CCDC: 212695.
文摘Two Cu(Ⅱ) complexes with title Schiff base ligand H 2L, micro crystal Cu(HL)ClO 4·H 2O and single crystal , have been synthesized and characterized by IR spectra, etc .. By cyclic voltammetry, a quasi reversible electron transferring process has been shown in Cu(Ⅱ)/Cu(Ⅰ) couples reaction of ; the given value E 0 1/2 =-0.73 V has been estimated. The structure of has been determined by X ray diffraction with R =0.036. The results indicate that the deprotonic ligand, as a practically tetradentate, coordinates only with its two imino and two phenoxo groups to form a D 2d symmetric geometry. Two different torsional modes of the homologous ligands, occurring in mono and di nuclear Cu(Ⅱ) complexes, respectively, have been contrasted and discussed.
文摘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 I>2σ(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.
