A novel one-dimensional chain complex [Zn(dafo)2(H2O)2](NO3)2 was synthesized. It has been characterized by IR, UV, TGA, Elemental analysis and X-ray diffraction analysis. The crystal belongs to triclinic system, P1 s...A novel one-dimensional chain complex [Zn(dafo)2(H2O)2](NO3)2 was synthesized. It has been characterized by IR, UV, TGA, Elemental analysis and X-ray diffraction analysis. The crystal belongs to triclinic system, P1 space group. The Crystallographic data are: a = 0.702 7(14) nm, b = 0.828 95(17) nm, c = 10.225(2) nm, α = 95.02(3)°, β = 91.45(3)°, γ = 99.85(3)°. The crystal structure data indicate that the Zn(Ⅱ) ion was coordinated with the four nitrogen atoms of two dafo and two oxygen atoms of two coordination water molecules, respectively. The complex has a one-dimensional chain structure, which is formed by hydrogen bonds.展开更多
The interaction between β-K 4H 3 [SiW 9O 37(CpTi) 3]·11H 2O and DNA was investigated by agarose gel electrophoresis. The results suggest that β-K 4H 3[SiW 9O 37(CpTi) 3]·11H 2O can degrade the genomic DNA....The interaction between β-K 4H 3 [SiW 9O 37(CpTi) 3]·11H 2O and DNA was investigated by agarose gel electrophoresis. The results suggest that β-K 4H 3[SiW 9O 37(CpTi) 3]·11H 2O can degrade the genomic DNA. The treatment of plasmid DNA with β-K 4H 3 [SiW 9O 37(CpTi) 3]·11H 2O resulted in a fast moving band in front of the three normal conformations(super coiled DNA, linear DNA and relaxed circular DNA) in agarose gel electrophoresis . These results indicate that this chemical material may have the ability to specifically cleavage DNA or to alter conformation of DNA molecules.展开更多
Additive reactions of Ni[(C 4H 9O) 2PS 2] 2 with ethylamine,diethylamine and triethylamine were studied by spectrophotometric methods in ethanol at several tempertures.With ethylamine,the adduct formation of NiL 2...Additive reactions of Ni[(C 4H 9O) 2PS 2] 2 with ethylamine,diethylamine and triethylamine were studied by spectrophotometric methods in ethanol at several tempertures.With ethylamine,the adduct formation of NiL 2·B and NiL 2·B 2 was established.For diethylamine and triethylamine,being of their steric hindrance effect,the formation of NiL 2·B only was concluded.Their additive equilibrium constants(lg β n)and additive molecular number(n) were discussed.Thermodynamic parameters △ r H m and △ r S m were found by the least square method.The additive equilibrium constants in the range 278 0～303 0K were described by empirical equation.展开更多
文摘A novel one-dimensional chain complex [Zn(dafo)2(H2O)2](NO3)2 was synthesized. It has been characterized by IR, UV, TGA, Elemental analysis and X-ray diffraction analysis. The crystal belongs to triclinic system, P1 space group. The Crystallographic data are: a = 0.702 7(14) nm, b = 0.828 95(17) nm, c = 10.225(2) nm, α = 95.02(3)°, β = 91.45(3)°, γ = 99.85(3)°. The crystal structure data indicate that the Zn(Ⅱ) ion was coordinated with the four nitrogen atoms of two dafo and two oxygen atoms of two coordination water molecules, respectively. The complex has a one-dimensional chain structure, which is formed by hydrogen bonds.
文摘The interaction between β-K 4H 3 [SiW 9O 37(CpTi) 3]·11H 2O and DNA was investigated by agarose gel electrophoresis. The results suggest that β-K 4H 3[SiW 9O 37(CpTi) 3]·11H 2O can degrade the genomic DNA. The treatment of plasmid DNA with β-K 4H 3 [SiW 9O 37(CpTi) 3]·11H 2O resulted in a fast moving band in front of the three normal conformations(super coiled DNA, linear DNA and relaxed circular DNA) in agarose gel electrophoresis . These results indicate that this chemical material may have the ability to specifically cleavage DNA or to alter conformation of DNA molecules.
文摘Additive reactions of Ni[(C 4H 9O) 2PS 2] 2 with ethylamine,diethylamine and triethylamine were studied by spectrophotometric methods in ethanol at several tempertures.With ethylamine,the adduct formation of NiL 2·B and NiL 2·B 2 was established.For diethylamine and triethylamine,being of their steric hindrance effect,the formation of NiL 2·B only was concluded.Their additive equilibrium constants(lg β n)and additive molecular number(n) were discussed.Thermodynamic parameters △ r H m and △ r S m were found by the least square method.The additive equilibrium constants in the range 278 0～303 0K were described by empirical equation.
