A new Schiff base, 2 hydroxy 1 napthaldehyde 2 amino thiazole(HNATS) and its Cu(Ⅱ) complex was synthesized. The complex[Cu(Ⅱ) (HNATS) 2] could exhibit an efficient peroxitase like catalytic activity, and catalyze th...A new Schiff base, 2 hydroxy 1 napthaldehyde 2 amino thiazole(HNATS) and its Cu(Ⅱ) complex was synthesized. The complex[Cu(Ⅱ) (HNATS) 2] could exhibit an efficient peroxitase like catalytic activity, and catalyze the coupling reaction of 2,4 dichlorophenol and 4 amino antipyrine with hydrogen peroxide. The effect of SDS on the catalytic activity of mimetic enzyme was studied. Based on the reaction, the determination of O ·- 2 by this new spectrophotometric method was developed. The proposed method was used to determine SOD activity of garlic, scallion and onion with satisfactory results.展开更多
New oscillating reactions catalyzed by a bistetraazacrocyclic nickel (Ⅱ) complex Ni2L(ClO4), where L is bis(11,13 dimethyl 1,4,7,10 tetraza 10,13 cyclotridecadien 12 ylidene), in acidic bromate medium have been studi...New oscillating reactions catalyzed by a bistetraazacrocyclic nickel (Ⅱ) complex Ni2L(ClO4), where L is bis(11,13 dimethyl 1,4,7,10 tetraza 10,13 cyclotridecadien 12 ylidene), in acidic bromate medium have been studied. We obtained the concentration ranges of main reactant within which the oscillations were observed in the system. We discussed the influence of temperature, Vc ,Br-, Ag+, Hg2+, acetonitrile or acrylamide on the oscillations. The results indicated that Br-played an important role in the control reaction progress and free radical might be involved in the reaction process. We recorded the oscillation trajectories of this system. It was different from classical BZ reaction and some other tetraazamacrocyclic complexes catalyzed system.展开更多
A Series of mono and di-nuclear Zn Ni complexes with 5 - chlorosalicylaldehyde -ethylenediamine Schiff base have been synthesized. Theirs compositions and structures were characterized by the elemental analysis.UV.IR ...A Series of mono and di-nuclear Zn Ni complexes with 5 - chlorosalicylaldehyde -ethylenediamine Schiff base have been synthesized. Theirs compositions and structures were characterized by the elemental analysis.UV.IR spectra and 1H NMR. The Dismutation to O2 free radical has also been investigated.展开更多
An amphipathic Schiff base complex with Cu(Ⅱ) was synthesized from p-cresol a nd dodecanoyl chloride with total yield of 36 8%. The structure and amphipathic property of the ligand and Cu complex have been invest iga...An amphipathic Schiff base complex with Cu(Ⅱ) was synthesized from p-cresol a nd dodecanoyl chloride with total yield of 36 8%. The structure and amphipathic property of the ligand and Cu complex have been invest igated. The oxidation of benzyl alcohol catalyzed by the complex in alkali solution gave benzaldehyde in yield of 57 8%.展开更多
基金supported by the National Natural Science Foundation of China(No.21973086,No.22203083)the Ministry of Science and Technology of China(No.2021YFA1200103)the Fundamental Research Funds for the Central Universities(No.WK2060000018)。
文摘A new Schiff base, 2 hydroxy 1 napthaldehyde 2 amino thiazole(HNATS) and its Cu(Ⅱ) complex was synthesized. The complex[Cu(Ⅱ) (HNATS) 2] could exhibit an efficient peroxitase like catalytic activity, and catalyze the coupling reaction of 2,4 dichlorophenol and 4 amino antipyrine with hydrogen peroxide. The effect of SDS on the catalytic activity of mimetic enzyme was studied. Based on the reaction, the determination of O ·- 2 by this new spectrophotometric method was developed. The proposed method was used to determine SOD activity of garlic, scallion and onion with satisfactory results.
文摘New oscillating reactions catalyzed by a bistetraazacrocyclic nickel (Ⅱ) complex Ni2L(ClO4), where L is bis(11,13 dimethyl 1,4,7,10 tetraza 10,13 cyclotridecadien 12 ylidene), in acidic bromate medium have been studied. We obtained the concentration ranges of main reactant within which the oscillations were observed in the system. We discussed the influence of temperature, Vc ,Br-, Ag+, Hg2+, acetonitrile or acrylamide on the oscillations. The results indicated that Br-played an important role in the control reaction progress and free radical might be involved in the reaction process. We recorded the oscillation trajectories of this system. It was different from classical BZ reaction and some other tetraazamacrocyclic complexes catalyzed system.
文摘A Series of mono and di-nuclear Zn Ni complexes with 5 - chlorosalicylaldehyde -ethylenediamine Schiff base have been synthesized. Theirs compositions and structures were characterized by the elemental analysis.UV.IR spectra and 1H NMR. The Dismutation to O2 free radical has also been investigated.
文摘An amphipathic Schiff base complex with Cu(Ⅱ) was synthesized from p-cresol a nd dodecanoyl chloride with total yield of 36 8%. The structure and amphipathic property of the ligand and Cu complex have been invest igated. The oxidation of benzyl alcohol catalyzed by the complex in alkali solution gave benzaldehyde in yield of 57 8%.
