The novel europium complex Eu3（dpa dioxide）4·（CF3COO）5·H2O （dpa dioxide = di-2-pyridylamine N,N＇-dioxide） was prepared by the reaction of Eu（CF3CO2）3 with Dpa dioxide in acetonitrile under 95 ℃ and...The novel europium complex Eu3（dpa dioxide）4·（CF3COO）5·H2O （dpa dioxide = di-2-pyridylamine N,N＇-dioxide） was prepared by the reaction of Eu（CF3CO2）3 with Dpa dioxide in acetonitrile under 95 ℃ and determined by X-ray single-crystal diffraction. The crystal belongs to monoclinic system, space group C2/c with a = 41.632（8）, b = 14.662（3）, c = 23.300（4）A,β= 100.862（5）°, Z = 8, D = 1.775 g/cm^3, V = 13968（4）A^3, F（000） = 7232, the final R = 0.0464 and wR = 0.1168. In this tri-nuclear complex, each europium（Ⅲ） is nine-coordinated to adopt an unequal sphere geometry.展开更多
The syntheis of diphenyletylane with xylol and styrene as reactants and solid superacid SO42-/TiO2 doped rare-earth metal ion La3+ as a catalyst was reported.The results showed that the optimal conditions were using 1...The syntheis of diphenyletylane with xylol and styrene as reactants and solid superacid SO42-/TiO2 doped rare-earth metal ion La3+ as a catalyst was reported.The results showed that the optimal conditions were using 1% of catalyst with the molar ration of xylol to styrene being 7.5:1,at temperature of 140℃ for 3 h;The yield of diphenylethylane under such conditions was about 97.5%.展开更多
基金This work was supported by the Natural Science Foundation of Jiangxi Province (No. 0320026 and 0520036)
文摘The novel europium complex Eu3（dpa dioxide）4·（CF3COO）5·H2O （dpa dioxide = di-2-pyridylamine N,N＇-dioxide） was prepared by the reaction of Eu（CF3CO2）3 with Dpa dioxide in acetonitrile under 95 ℃ and determined by X-ray single-crystal diffraction. The crystal belongs to monoclinic system, space group C2/c with a = 41.632（8）, b = 14.662（3）, c = 23.300（4）A,β= 100.862（5）°, Z = 8, D = 1.775 g/cm^3, V = 13968（4）A^3, F（000） = 7232, the final R = 0.0464 and wR = 0.1168. In this tri-nuclear complex, each europium（Ⅲ） is nine-coordinated to adopt an unequal sphere geometry.
文摘The syntheis of diphenyletylane with xylol and styrene as reactants and solid superacid SO42-/TiO2 doped rare-earth metal ion La3+ as a catalyst was reported.The results showed that the optimal conditions were using 1% of catalyst with the molar ration of xylol to styrene being 7.5:1,at temperature of 140℃ for 3 h;The yield of diphenylethylane under such conditions was about 97.5%.
