27Al NMR studies of the hydrolysis of aluminium(III) chloride in non-aqueous media
作者:Zbyněk Černý、Jı̆rı́ Macháček、Jı̆rı́ Fusek、Bohuslav Čásenský、Otomar Křiž、Dennis G. Tuck
DOI:10.1016/s0020-1693(00)00017-7
日期:2000.4
Abstract Solutions prepared by equibrating solid AlCl3 and benzene have been studied by 27Al NMR spectroscopy. Evidence of hydrolysis of AlCl3 is found, both under nominally anhydrous conditions and in the presence of added H2O. Results are also reported for systems containing added gaseous HCl. The deconvoluted spectra show signals from rapidly exchanging ionic species, identified as H[AlCl4] and
摘要利用27Al NMR光谱研究了固体AlCl3和苯平衡制得的溶液。在名义上无水的条件下和在添加的H2O存在下,都发现了AlCl3水解的证据。还报告了含有添加的气态HCl的系统的结果。解卷积光谱显示了来自快速交换的离子物种(标识为H [AlCl4]和H [AlCl3(OH)]以及基于Al2O2核的非离子物种(配方为[Cl2Al(OH)] 2)的信号,也假定。该物质在结构上与其他人在标称无水AlCl3和苯中进行的制备工作中报告的化合物有关。溶液中可能还含有Al2Cl6,被认为是非常宽泛的共振,相对于[Al(H2O)6] 3 + = 0,其化学位移估计约为98 ppm。