The title compound 2-（5-（4-chlorophenyl）-1-phenyl-4,5-dihydro-1H-pyrazol-3-yl）- pyridine（C20H16ClN3, Mr = 333.81） has been synthesized and its crystal structure was determined by single-crystal X-ray diffraction...The title compound 2-（5-（4-chlorophenyl）-1-phenyl-4,5-dihydro-1H-pyrazol-3-yl）- pyridine（C20H16ClN3, Mr = 333.81） has been synthesized and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P21/n with a = 10.9925（12）, b = 11.0378（12）, c = 14.2751（18） , β = 98.074（11）°, V = 1714.9（3）3, Z = 4, Dc = 1.293 g/cm3, μ（MoKα） = 0.228 mm-1, F（000） = 696, the final R = 0.0521 and wR = 0.1349 for 3495 observed reflections with I 〉 2σ（I）. Intermolecular C–H...π interactions and π-π stacking interactions stabilize the crystal structure. The binding study by fluorescence spectroscope titration showed that the title compound can selectively recognize Fe3＋ in THF solution with fluorescence quenching.展开更多
A new clip molecule 1 based on diethoxycarbonyl glycoluril, C46H34ChN4O8, has been synthesized and characterized by single-crystal X-ray diffraction. The crystal belongs to triclinic, space group P1 with a = 11.3674（...A new clip molecule 1 based on diethoxycarbonyl glycoluril, C46H34ChN4O8, has been synthesized and characterized by single-crystal X-ray diffraction. The crystal belongs to triclinic, space group P1 with a = 11.3674（8）, b = 11.3674（8）, c = 16.9704（12） A, a = 70.0690（10）, β= 72.2310（10）, y = 78.0880（10）°, V= 1993.2（2） A3, Z = 2, Dc = 1.521 g/cm3, μ（MoKa） = 0.361 mml, F（000） = 940, the final R = 0.0422 and wR = 0.1144 for 22997 observed reflections with 1 〉 2o（I）. The crystal structural analysis shows that C-H……O and C-H……Cl hydrogen bonds, C-H-……π, C-CI……π supramolecular interactions, andπ-π packing interaction stabilized the whole crystal structure. The binding study by fluorescence spectroscope titration showed that the title molecule can selectively recognize Fe3＋ with fluorescence quenching.展开更多
H3PW12O40/TiO2-SiO2 was synthesized by impregnation method which significantly improved the catalytic activity under simulated natural light. The prop- erties of the samples were characterized by Fourier trans- form i...H3PW12O40/TiO2-SiO2 was synthesized by impregnation method which significantly improved the catalytic activity under simulated natural light. The prop- erties of the samples were characterized by Fourier trans- form infrared spectra （FTIR）, X-ray powder diffraction pattern （XRD）, Scanning electron micrographs （SEM）, and Zeta potential. Degradation of methyl violet was used as a probe reaction to explore the influencing factors on the photodegradation reaction. The results show that the opti- mal conditions are as follows： initial concentration of methyl violet of 10 mg·L^-1, pH of 3.0, catalyst dosage of 2.9 g·L^-1, and light irradiation time of 2.5 h. Under these conditions, the degradation rate of methyl violet is 95.4 %. The reaction on photodegradation for methyl violet can be expressed as the first-order kinetic model, and the possible mechanism for the photocatalysis under simulated natural light is suggested. After used continuously for five times, the catalyst keeps the inherent photocatalytic activity for degradation of dyes. The photodegradation of methyl orange, methyl red, naphthol green B, and methylene blue was also tested, and the degradation rate of dyes can reach 81%-100%.展开更多
基金supported by the Hubei Province Education Ministry Foundation of China(No.D20112507)the Science Technology Foundation for Creative Research Group of HBDE(No.T201311)
文摘The title compound 2-（5-（4-chlorophenyl）-1-phenyl-4,5-dihydro-1H-pyrazol-3-yl）- pyridine（C20H16ClN3, Mr = 333.81） has been synthesized and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to monoclinic, space group P21/n with a = 10.9925（12）, b = 11.0378（12）, c = 14.2751（18） , β = 98.074（11）°, V = 1714.9（3）3, Z = 4, Dc = 1.293 g/cm3, μ（MoKα） = 0.228 mm-1, F（000） = 696, the final R = 0.0521 and wR = 0.1349 for 3495 observed reflections with I 〉 2σ（I）. Intermolecular C–H...π interactions and π-π stacking interactions stabilize the crystal structure. The binding study by fluorescence spectroscope titration showed that the title compound can selectively recognize Fe3＋ in THF solution with fluorescence quenching.
基金supported by the Hubei Province Education Ministry Foundation of China(No.D20112507)the Science Technology Foundation for Creative Research Group of HBDE(No.T201311)
文摘A new clip molecule 1 based on diethoxycarbonyl glycoluril, C46H34ChN4O8, has been synthesized and characterized by single-crystal X-ray diffraction. The crystal belongs to triclinic, space group P1 with a = 11.3674（8）, b = 11.3674（8）, c = 16.9704（12） A, a = 70.0690（10）, β= 72.2310（10）, y = 78.0880（10）°, V= 1993.2（2） A3, Z = 2, Dc = 1.521 g/cm3, μ（MoKa） = 0.361 mml, F（000） = 940, the final R = 0.0422 and wR = 0.1144 for 22997 observed reflections with 1 〉 2o（I）. The crystal structural analysis shows that C-H……O and C-H……Cl hydrogen bonds, C-H-……π, C-CI……π supramolecular interactions, andπ-π packing interaction stabilized the whole crystal structure. The binding study by fluorescence spectroscope titration showed that the title molecule can selectively recognize Fe3＋ with fluorescence quenching.
基金financially supported by the Hubei Key Laboratory of Pollutant Analysis & Reuse Technology (No.KL2013M08)
文摘H3PW12O40/TiO2-SiO2 was synthesized by impregnation method which significantly improved the catalytic activity under simulated natural light. The prop- erties of the samples were characterized by Fourier trans- form infrared spectra （FTIR）, X-ray powder diffraction pattern （XRD）, Scanning electron micrographs （SEM）, and Zeta potential. Degradation of methyl violet was used as a probe reaction to explore the influencing factors on the photodegradation reaction. The results show that the opti- mal conditions are as follows： initial concentration of methyl violet of 10 mg·L^-1, pH of 3.0, catalyst dosage of 2.9 g·L^-1, and light irradiation time of 2.5 h. Under these conditions, the degradation rate of methyl violet is 95.4 %. The reaction on photodegradation for methyl violet can be expressed as the first-order kinetic model, and the possible mechanism for the photocatalysis under simulated natural light is suggested. After used continuously for five times, the catalyst keeps the inherent photocatalytic activity for degradation of dyes. The photodegradation of methyl orange, methyl red, naphthol green B, and methylene blue was also tested, and the degradation rate of dyes can reach 81%-100%.
