In the paper we compare rutin with vitamin B2 in electrochemical investigation,electrochemcial parameters of adding DNA.It shows that both reduction and oxidation peak currents of rutin or vitamin B2 decrease with no ...In the paper we compare rutin with vitamin B2 in electrochemical investigation,electrochemcial parameters of adding DNA.It shows that both reduction and oxidation peak currents of rutin or vitamin B2 decrease with no change in the peak potentials,when DNA is added in rutin or vitamin B2 solution.An electrochemical inactive supramolecular complex DNA-Rt or DNA-VB2 was formed.The decrease in peak current was proportional to DNA concentration and can be used to determine DNA concentration.Change of peak current with the concentration of rutin or vitamin B2 is linear in sure range and can be used to determine rutin or vitamin B2concentration.A satisfactory result was obtained for the determination of rutin or vitamin B2 in tablet.展开更多
L cysteic acid was synthesized from L cystine by indirect electroxidation method in this paper.High yield and purity of the product were obtained.The product structure was characterized by IR and 1HNMR, and its TGA cu...L cysteic acid was synthesized from L cystine by indirect electroxidation method in this paper.High yield and purity of the product were obtained.The product structure was characterized by IR and 1HNMR, and its TGA curve was discussed as well.展开更多
Twentyone N,N nitrobenzoyl substituted benzoylthiosemicarbazides were synthesized by addition reaction of nitrophenyl isothiocyanates with aroyl hydrazines and their structures were characterized by 1H NMR, 13 C NM...Twentyone N,N nitrobenzoyl substituted benzoylthiosemicarbazides were synthesized by addition reaction of nitrophenyl isothiocyanates with aroyl hydrazines and their structures were characterized by 1H NMR, 13 C NMR, IR and elemental analysis. The biological tests indicated that these compounds had antibacterial activity against B.subtilis , but no action on E.coli .展开更多
Two of new Schiff bases,3-nitrobenzaldehyde salicyloyl hydrazone(C14H11N3O4),vanillic salicyloyl hydrazone(C15H14N2O4),were synthesized and characterized by the melting point,elemental analysis,UV,IR,MS and （）1H NMR...Two of new Schiff bases,3-nitrobenzaldehyde salicyloyl hydrazone(C14H11N3O4),vanillic salicyloyl hydrazone(C15H14N2O4),were synthesized and characterized by the melting point,elemental analysis,UV,IR,MS and （）1H NMR.The results,based on indexing the cell parameters of XRD,showed that they belonged to orthorhombic system.And the result peoved that the Schiff bases had selective antibacterial property.展开更多
A new ionic compound ｛[2-(3′-pyridyl)benzimidazoleH2]2+·[SbCl4]-·Cl-｝4 was synthesized by the hy- drothermal reaction of o-diaminobenzene, nicotinic acid with SbCl3 in 1∶1 HCl solution. The structure was...A new ionic compound ｛[2-(3′-pyridyl)benzimidazoleH2]2+·[SbCl4]-·Cl-｝4 was synthesized by the hy- drothermal reaction of o-diaminobenzene, nicotinic acid with SbCl3 in 1∶1 HCl solution. The structure was charac- terized by chemical analysis, elemental analysis and IR patterns. The single crystal structure was determined by X-ray single crystal diffraction. It crystallizes in monoclinic system, space group P21/n with a=2.107 9(4) nm, b= 1.482 0(3) nm, c=2.113 4(4) nm, β=93.44(3)°, Z=4, V=6.590(2) nm3, Dc=2.001 g·cm-3, μ=2.480 mm-1, F(000)= 3840, R1=0.0468, wR2=0.1163. The single crystal structure indicates that the four chlorines coordinated to the antimony atom forms a distorted triangle bipyramid configuration together with the lone electron pair on the Sb atom. The [SbCl4]- to 2-(3′-pyridyl)benzimidazole cation and Cl- by weak interaction forms the ionic crystal. It has been proved that the title compound has antibacterial activity. CCDC: 283824.展开更多
Salicylaldehyde O,O dimethyl phosphoramidothioic and their complexes of copper(Ⅱ),nicke(Ⅱ) and Zinc(Ⅱ) were synthesized and characterized by elemental analysis,electronic absorption spectrum,IR and molar conductivi...Salicylaldehyde O,O dimethyl phosphoramidothioic and their complexes of copper(Ⅱ),nicke(Ⅱ) and Zinc(Ⅱ) were synthesized and characterized by elemental analysis,electronic absorption spectrum,IR and molar conductivity.The schiffbase ligand was further ascertained by 1HNMR spectra.The composition coordination state and possible structures in these compounds were given.The tests of biological activity showed that synthesized complexes have scavenging effect on superoxide free radical similar SOD enzyme and these compounds are effective chemicals to kill tetranychus bimaculatus.展开更多
文摘In the paper we compare rutin with vitamin B2 in electrochemical investigation,electrochemcial parameters of adding DNA.It shows that both reduction and oxidation peak currents of rutin or vitamin B2 decrease with no change in the peak potentials,when DNA is added in rutin or vitamin B2 solution.An electrochemical inactive supramolecular complex DNA-Rt or DNA-VB2 was formed.The decrease in peak current was proportional to DNA concentration and can be used to determine DNA concentration.Change of peak current with the concentration of rutin or vitamin B2 is linear in sure range and can be used to determine rutin or vitamin B2concentration.A satisfactory result was obtained for the determination of rutin or vitamin B2 in tablet.
文摘L cysteic acid was synthesized from L cystine by indirect electroxidation method in this paper.High yield and purity of the product were obtained.The product structure was characterized by IR and 1HNMR, and its TGA curve was discussed as well.
文摘Twentyone N,N nitrobenzoyl substituted benzoylthiosemicarbazides were synthesized by addition reaction of nitrophenyl isothiocyanates with aroyl hydrazines and their structures were characterized by 1H NMR, 13 C NMR, IR and elemental analysis. The biological tests indicated that these compounds had antibacterial activity against B.subtilis , but no action on E.coli .
文摘Two of new Schiff bases,3-nitrobenzaldehyde salicyloyl hydrazone(C14H11N3O4),vanillic salicyloyl hydrazone(C15H14N2O4),were synthesized and characterized by the melting point,elemental analysis,UV,IR,MS and （）1H NMR.The results,based on indexing the cell parameters of XRD,showed that they belonged to orthorhombic system.And the result peoved that the Schiff bases had selective antibacterial property.
文摘A new ionic compound ｛[2-(3′-pyridyl)benzimidazoleH2]2+·[SbCl4]-·Cl-｝4 was synthesized by the hy- drothermal reaction of o-diaminobenzene, nicotinic acid with SbCl3 in 1∶1 HCl solution. The structure was charac- terized by chemical analysis, elemental analysis and IR patterns. The single crystal structure was determined by X-ray single crystal diffraction. It crystallizes in monoclinic system, space group P21/n with a=2.107 9(4) nm, b= 1.482 0(3) nm, c=2.113 4(4) nm, β=93.44(3)°, Z=4, V=6.590(2) nm3, Dc=2.001 g·cm-3, μ=2.480 mm-1, F(000)= 3840, R1=0.0468, wR2=0.1163. The single crystal structure indicates that the four chlorines coordinated to the antimony atom forms a distorted triangle bipyramid configuration together with the lone electron pair on the Sb atom. The [SbCl4]- to 2-(3′-pyridyl)benzimidazole cation and Cl- by weak interaction forms the ionic crystal. It has been proved that the title compound has antibacterial activity. CCDC: 283824.
文摘Salicylaldehyde O,O dimethyl phosphoramidothioic and their complexes of copper(Ⅱ),nicke(Ⅱ) and Zinc(Ⅱ) were synthesized and characterized by elemental analysis,electronic absorption spectrum,IR and molar conductivity.The schiffbase ligand was further ascertained by 1HNMR spectra.The composition coordination state and possible structures in these compounds were given.The tests of biological activity showed that synthesized complexes have scavenging effect on superoxide free radical similar SOD enzyme and these compounds are effective chemicals to kill tetranychus bimaculatus.
