A new amino-acid Schiff base, 1-phenyl-3-methyl-4-(2-thenoyl) pyrazolone-5-β-alanine (HL) and its ten rare earth complexes have been synthesized. On the basis of elemental analysis and molar conductance, the general ...A new amino-acid Schiff base, 1-phenyl-3-methyl-4-(2-thenoyl) pyrazolone-5-β-alanine (HL) and its ten rare earth complexes have been synthesized. On the basis of elemental analysis and molar conductance, the general formula of the complexes, ·nH2O (RE=La, Nd, Eu, Tb, Y, n=2; RE= Pr, Sm, n=1; RE= Dy, Er, Yb, n=3), is given. They were characterized by IR, UV-visible, 1H NMR, 13C NMR and fluorescence. The results show that the rare earth ions exhibit coordination of eight in the complexes.The antibacterial experiments indicate that they have high antibacterial activities against S. Aureus, B. Subtillis, E. Coli, E. Carotovora and C. Flaccumfaciens.展开更多
Two Co ?complexes Co (β-diketonate) 2(py) 2Co (bzac)2 (py) 2(1)andCo (tta) 2 (py) 2(2)(bzacH =benzoylacetone,ttaH =2-thenoyltr ifluoroacetone,py =pyridine)were synthesized and characterized by X-ray diffraction.Compl...Two Co ?complexes Co (β-diketonate) 2(py) 2Co (bzac)2 (py) 2(1)andCo (tta) 2 (py) 2(2)(bzacH =benzoylacetone,ttaH =2-thenoyltr ifluoroacetone,py =pyridine)were synthesized and characterized by X-ray diffraction.Complex1crystallizes in monoclinic system,space group P2 1 /n with a=0.7409(2),b=1.7430(4),c=1.0527(2)nm,β=102.23(3)°,V=1.3285(5)nm 3 ,Z =2,F(000)=562,D c =1.349g·cm -3 ,μ(Mo Kα)=0.684mm -1 .The structure was refined to R=0.0307and w R=0.0827for observed 2437reflectio ns with I≥2σ(I).Complex2crystallizes in triclinic system,s pace groupP1with a=0.9634(2),b=0.9678(2),c=0.9713(2)nm,α=111.18(3),β=114.61(3),γ=99.05(3)°,V=0.7154(2)nm 3 ,Z =1,F(000)=333,D c =1.531g·cm -3 ,μ(Mo Kα)=0.819mm -1 .The structure was refined to R=0.0595and w R=0.1769for observed 2708reflection s with I≥2σ(I).In both structures the Co ?ions are six-coordinated to form distorted octahedron.展开更多
文摘A new amino-acid Schiff base, 1-phenyl-3-methyl-4-(2-thenoyl) pyrazolone-5-β-alanine (HL) and its ten rare earth complexes have been synthesized. On the basis of elemental analysis and molar conductance, the general formula of the complexes, ·nH2O (RE=La, Nd, Eu, Tb, Y, n=2; RE= Pr, Sm, n=1; RE= Dy, Er, Yb, n=3), is given. They were characterized by IR, UV-visible, 1H NMR, 13C NMR and fluorescence. The results show that the rare earth ions exhibit coordination of eight in the complexes.The antibacterial experiments indicate that they have high antibacterial activities against S. Aureus, B. Subtillis, E. Coli, E. Carotovora and C. Flaccumfaciens.
文摘Two Co ?complexes Co (β-diketonate) 2(py) 2Co (bzac)2 (py) 2(1)andCo (tta) 2 (py) 2(2)(bzacH =benzoylacetone,ttaH =2-thenoyltr ifluoroacetone,py =pyridine)were synthesized and characterized by X-ray diffraction.Complex1crystallizes in monoclinic system,space group P2 1 /n with a=0.7409(2),b=1.7430(4),c=1.0527(2)nm,β=102.23(3)°,V=1.3285(5)nm 3 ,Z =2,F(000)=562,D c =1.349g·cm -3 ,μ(Mo Kα)=0.684mm -1 .The structure was refined to R=0.0307and w R=0.0827for observed 2437reflectio ns with I≥2σ(I).Complex2crystallizes in triclinic system,s pace groupP1with a=0.9634(2),b=0.9678(2),c=0.9713(2)nm,α=111.18(3),β=114.61(3),γ=99.05(3)°,V=0.7154(2)nm 3 ,Z =1,F(000)=333,D c =1.531g·cm -3 ,μ(Mo Kα)=0.819mm -1 .The structure was refined to R=0.0595and w R=0.1769for observed 2708reflection s with I≥2σ(I).In both structures the Co ?ions are six-coordinated to form distorted octahedron.
