2,4 dihydroxyacetophenone thiosemicarbanzone and their complexes of copper(Ⅱ), nickel(Ⅱ) and cobalt(Ⅱ) have been synthesized and characterized by elemental analysis, electronic absorption spectrum, Infro Red spectr...2,4 dihydroxyacetophenone thiosemicarbanzone and their complexes of copper(Ⅱ), nickel(Ⅱ) and cobalt(Ⅱ) have been synthesized and characterized by elemental analysis, electronic absorption spectrum, Infro Red spectrum, molar conductizity and magnetic susceptiibility. The antibacterial activity of these new complexes was examined.展开更多
N,N′-ethidenedi(2-hydroxy 4 methoxy benzophenone imine acetal)was synthesized and characterized by the melting point,elemental analysis,UV,IR,MS and 1H NMR.The result of XRD proved that it belonged to the monoclinic ...N,N′-ethidenedi(2-hydroxy 4 methoxy benzophenone imine acetal)was synthesized and characterized by the melting point,elemental analysis,UV,IR,MS and 1H NMR.The result of XRD proved that it belonged to the monoclinic system.Its lattice parameters were:a=1.1018nm,b=1.5730nm,c=1.8858nm,β=93.50°.The schiff base has a strong absorption ability to absorb the UV-A and UV-B,and bears antibacterial activity of many bacterial.展开更多
The crystal of binuclear zinc complex Zn2(dhaash)2(py)4 was obtained in DMF and pyridine, where H2dhaash is 2,4-dihydroxy-5-acetylacetophenone-N-salicylhydrazone. It has been characterized by IR, UV, element analysis ...The crystal of binuclear zinc complex Zn2(dhaash)2(py)4 was obtained in DMF and pyridine, where H2dhaash is 2,4-dihydroxy-5-acetylacetophenone-N-salicylhydrazone. It has been characterized by IR, UV, element analysis and X-ray single crystal diffraction. The crystallographic data were as follows: monoclinic system, space group P21 / c, a=1.108 98(11) nm, b=1.640 84(16) nm, c=1.445 14(14) nm, β=108.617(2)°, Z=2, V=2.492 1(4) nm3, Dc=1.466 g·cm-3, Mr=1 099.74, μ=1.031 mm-1, F(000)=1 136 and the final R=0.044 8 and wR=0.105 8 for 4 143 observed reflections with I≥2σ(I), respectively. The X-ray crystal structure analysis revealed that, in the centrosymmetric binuclear complex molecule, two zinc髤 centers are linked by two oxygen atoms (O(3) and O(3A)), respectively. Zn(1)...Zn(1A) distance is 0.314 81(6) nm, O(3)...O(3A) distance is 0.270 4(2) nm. Every zinc髤 ion has an elongated octahedral coordination. For example, the two pyridine nitrogen atoms, one oxygen atom and one nitrogen atom from salicylhydrazone, one oxygen atom from 2,4-dihydroxy-5-acetylacetophenone in one dhaash2- ligand and one oxygen atom from 2,4-dihydroxy-5-acetylacetophenone in another dhaash2- ligand coordinated to zinc髤 ion, respectively. Two zinc髤 ions and all the 72 non-hydrogen atoms in the two dhaash2- ligands are in the same plane. CCDC: 261929.展开更多
文摘2,4 dihydroxyacetophenone thiosemicarbanzone and their complexes of copper(Ⅱ), nickel(Ⅱ) and cobalt(Ⅱ) have been synthesized and characterized by elemental analysis, electronic absorption spectrum, Infro Red spectrum, molar conductizity and magnetic susceptiibility. The antibacterial activity of these new complexes was examined.
文摘N,N′-ethidenedi(2-hydroxy 4 methoxy benzophenone imine acetal)was synthesized and characterized by the melting point,elemental analysis,UV,IR,MS and 1H NMR.The result of XRD proved that it belonged to the monoclinic system.Its lattice parameters were:a=1.1018nm,b=1.5730nm,c=1.8858nm,β=93.50°.The schiff base has a strong absorption ability to absorb the UV-A and UV-B,and bears antibacterial activity of many bacterial.
文摘The crystal of binuclear zinc complex Zn2(dhaash)2(py)4 was obtained in DMF and pyridine, where H2dhaash is 2,4-dihydroxy-5-acetylacetophenone-N-salicylhydrazone. It has been characterized by IR, UV, element analysis and X-ray single crystal diffraction. The crystallographic data were as follows: monoclinic system, space group P21 / c, a=1.108 98(11) nm, b=1.640 84(16) nm, c=1.445 14(14) nm, β=108.617(2)°, Z=2, V=2.492 1(4) nm3, Dc=1.466 g·cm-3, Mr=1 099.74, μ=1.031 mm-1, F(000)=1 136 and the final R=0.044 8 and wR=0.105 8 for 4 143 observed reflections with I≥2σ(I), respectively. The X-ray crystal structure analysis revealed that, in the centrosymmetric binuclear complex molecule, two zinc髤 centers are linked by two oxygen atoms (O(3) and O(3A)), respectively. Zn(1)...Zn(1A) distance is 0.314 81(6) nm, O(3)...O(3A) distance is 0.270 4(2) nm. Every zinc髤 ion has an elongated octahedral coordination. For example, the two pyridine nitrogen atoms, one oxygen atom and one nitrogen atom from salicylhydrazone, one oxygen atom from 2,4-dihydroxy-5-acetylacetophenone in one dhaash2- ligand and one oxygen atom from 2,4-dihydroxy-5-acetylacetophenone in another dhaash2- ligand coordinated to zinc髤 ion, respectively. Two zinc髤 ions and all the 72 non-hydrogen atoms in the two dhaash2- ligands are in the same plane. CCDC: 261929.
