排序方式: 共有93条查询结果,搜索用时 15 毫秒
91.
Ling Y Chen ZX Zhai FP Zhou YM Weng LH Zhao DY 《Chemical communications (Cambridge, England)》2011,47(25):7197-7199
A three-dimensional (3D) metal-organic framework {[Zn(2)(HBDC)(2)(dmtrz)(2)]·guest}(n) with pcu net has been solvothermally synthesized, which shows selective adsorption of linear and monobranched hexane isomers over a dibranched one. 相似文献
92.
An environmentally benign and efficient process for the preparation of 3-(substituted methylthio)-4-phenyl-5- (3,4,5-trimethoxyphenyl)-4H-1,2,4-triazole was achieved by the reaction of 4-phenyl-5-(3,4,5-trimethoxyphenyl)- 4H- 1,2,4-triazole-3-thiol with different halides in aqueous media mediated by indium trichloride in high yields. 相似文献
93.
Cp3Ln与邻氨基苯甲酰胺在甲苯中反应,之后在HMPA和甲苯中结晶,以中等到高收率得到四核稀土有机配合物[CpLn(μ-η2:η2-NHC6H4CONH)(μ3-η1:η1:η2-NHC6H4CONH)LnCp(HMPA)}2(Ln=Yb,1a;Er,1b;Y,1c)。化合物1与4倍物质的量的PhNCO在甲苯中反应形成1,3-喹唑啉二氧基(Quo)双负离子稀土配合物[Cp2Ln(μ3-η2:η2:η1-Quo)]3Ln(HMPA)2(Ln=Yb,2a;Er,2b;Y,2c),表明化合物1中的Ln-NHAr键和ArCONH-Ln键能与异氰酸酯分子发生连续加成/胺消除反应,形成1,3-喹唑啉二氧基骨架。但化合物1a~1c与iPrN=C=NiPr反应,仅得到ArNH基单加成产物{Cp2Ln[μ-η3:η1-iPrNC(NHiPr)NC6H4CONH]}3Ln(HMPA)3 (Ln=Yb,3a;Er,3b;Y,3c)。而Cp3Ln与邻氨基苯甲酰胺和iPrN=C=NiPr在甲苯中进行"一锅"反应,则形成双核配合物{CpLn[μ-η3:η2-NHCOC6H4NC(NHiPr)NiPr]}2(Ln=Yb,4a;Er,4b;Y,4c)。值得注意的是,HMPA能够诱导配合物4发生配体重排反应,转化成化合物3。 相似文献