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
The title compound [Co(en) 2(H 2O) 2] 2· [Mo Ⅴ 4Mo Ⅵ 4V Ⅳ 8O 40 (AsO 4)] was synthesized by hydrothermal method and its structure was determined with single crystal X ray analysis. The cluster anion is a tetra...The title compound [Co(en) 2(H 2O) 2] 2· [Mo Ⅴ 4Mo Ⅵ 4V Ⅳ 8O 40 (AsO 4)] was synthesized by hydrothermal method and its structure was determined with single crystal X ray analysis. The cluster anion is a tetracapped Keggin polyanion, which contains different coordinated cations. The crystal is monoclinic, space group C2/c with a =1.458 3(2) nm, b =2.174 07(13) nm, c =1.893 2(2) nm, β =91.532°, V =6.000 2(10) nm 3, Z =2, D c=1.452 g/cm 3, R =0.035 9, R w=0.079 8, S =1.092.展开更多
基金partly supported by National Natural Science Foundation of China (No.21171075/ B010303, 21103073/B030201, 21306067/B060903)Science & Technology Supporting Program of Jiangsu Province (BE2013090)Innovation project for graduate student research of Jiangsu Province (CXZZ13_06)
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The title compound [Co(en) 2(H 2O) 2] 2· [Mo Ⅴ 4Mo Ⅵ 4V Ⅳ 8O 40 (AsO 4)] was synthesized by hydrothermal method and its structure was determined with single crystal X ray analysis. The cluster anion is a tetracapped Keggin polyanion, which contains different coordinated cations. The crystal is monoclinic, space group C2/c with a =1.458 3(2) nm, b =2.174 07(13) nm, c =1.893 2(2) nm, β =91.532°, V =6.000 2(10) nm 3, Z =2, D c=1.452 g/cm 3, R =0.035 9, R w=0.079 8, S =1.092.
