Two europium oxide/sulfide silicates, Eu2O（SiO4） （1） and Eu5S（SiO4）3 （2）, have been synthesized using high-temperature solid-state reactions. 1 crystallizes in the monoclinic space group P21/c with a = 9.1459...Two europium oxide/sulfide silicates, Eu2O（SiO4） （1） and Eu5S（SiO4）3 （2）, have been synthesized using high-temperature solid-state reactions. 1 crystallizes in the monoclinic space group P21/c with a = 9.1459（7）, b = 7.1280（5）, c = 6.7655（5） ？ and ？ = 107.611（2）, belonging to the Gd2O（SiO4） structure type; 2 crystallizes in space group P63/m of the hexagonal system with a = 9.786（4） and c = 6.789（3） , belonging to the apatite Ca5Cl（PO4）3 structure type. The structure chemistry of related RE2O（SiO4） and RE5S（SiO4）3 compounds is also discussed. The optical energy gap of 2 is determined to be 2.05 eV.展开更多
A series of novel anthranilic diamides with benzyl sulfide scaffold were synthesized,in which N-pyridylpyrazole moiety generally regarded as key pharmacophore was abandoned.The target compounds were characterized by ~...A series of novel anthranilic diamides with benzyl sulfide scaffold were synthesized,in which N-pyridylpyrazole moiety generally regarded as key pharmacophore was abandoned.The target compounds were characterized by ~1H NMR,^（13）C NMR,^（19）F NMR and HRMS.The preliminary bioassays indicated that half of the title compounds were endowed with good insecticidal activities against armyworm（Mythimna sepatara） at the concentration of 500 mg/L,Exhilaratingly,the synthesized compound 3a was also active against Tetranychus cinnabarinus at 100 mg/L.The difference in activities between the target compounds was influenced by the substituents,which provided some hints for further investigation on structure modifications.展开更多
基金supported by Yangzhou Engineering Technology Research Center of Petrochemical New Materials(YZM2015086)Yangzhou Science and Technology Bureau(YZ2016269)
文摘Two europium oxide/sulfide silicates, Eu2O（SiO4） （1） and Eu5S（SiO4）3 （2）, have been synthesized using high-temperature solid-state reactions. 1 crystallizes in the monoclinic space group P21/c with a = 9.1459（7）, b = 7.1280（5）, c = 6.7655（5） ？ and ？ = 107.611（2）, belonging to the Gd2O（SiO4） structure type; 2 crystallizes in space group P63/m of the hexagonal system with a = 9.786（4） and c = 6.789（3） , belonging to the apatite Ca5Cl（PO4）3 structure type. The structure chemistry of related RE2O（SiO4） and RE5S（SiO4）3 compounds is also discussed. The optical energy gap of 2 is determined to be 2.05 eV.
基金supported by National Basic Research Program of China(973 Program,No.2010CB126100)National High Technology Research and Development Program of China (863 Program,No.2011AA10A207)supported by National Key Technology R&D Program of China(No. 2011BAE06B01)
文摘A series of novel anthranilic diamides with benzyl sulfide scaffold were synthesized,in which N-pyridylpyrazole moiety generally regarded as key pharmacophore was abandoned.The target compounds were characterized by ~1H NMR,^（13）C NMR,^（19）F NMR and HRMS.The preliminary bioassays indicated that half of the title compounds were endowed with good insecticidal activities against armyworm（Mythimna sepatara） at the concentration of 500 mg/L,Exhilaratingly,the synthesized compound 3a was also active against Tetranychus cinnabarinus at 100 mg/L.The difference in activities between the target compounds was influenced by the substituents,which provided some hints for further investigation on structure modifications.
