ZnCl2与浓HCl按一定配比混合,生成了一种组成酸性极强复杂的溶液(Lucas试剂)。这种溶液的氯离子浓度极高,能将6个C以下的二级醇和三级醇转化为相应的卤代烃(从溶液中析出就是浑浊)。其机理为经典的碳正离子取代过程。 9楼2008-01-30 17:29 回复 天津的小虎森 无机化学 1 ...a o 10楼2008-01-30 ...
合成路线如下:NaOHNHHClZn三、主要试剂及参数:1、实验试剂(附录1尽具体)原料名称规格用量熔点摩尔数摩尔比FeClAR7gmp.315冰醋酸AR7.5mlmp.16.6安息香1.25尿素CP0.35mp.110.6氢氧化钠20%3mlmp.318.4乙醇50%5mlmp.-117.3盐酸10%适量mp.-114.8氨水适量mp.-77ZnSO47H2O3mlmp.1002、实验仪器:圆底烧瓶,循环水真空泵,...
Clean and rapid analytical separation of microgram quantities of Ge(IV), Sn(II), Pb(II) and Zn(II), Cd(II), Hg(II) from their mixed solution has been made possible by ascending thin-layer chromatography using the solvent systems: (a)Isobutyl alcohol: Conc. HCl: Et-Me ketone and (b...
NMR measurements and the Job plot suggest that tridentate coordination of 2 to Zn2+ results in an octahedral complex with Zn(2)2 stoichiometry. Additionally, with the appropriate alcohol protecting groups, the 1,3-bis(2-pyridylimino)-4,7-dihydroxyisoindole motif can serve as a fluorescence ...