| 用119Sn、121Sb及13C NMR研究无水SnCl4、SbCl5与Lewis碱的相互作用 |
| STUDY ON LEWIS ACID-BASE INTERACTION OF ANHYDROUS SnCl4 AND SbCl5 WITH COMMON SOLVENTS BY Sn-119,Sb-121 AND C-13 NMR SPECTROSCOPY |
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| 摘要: 无水SnCl4及SbCl5是典型的Lewis酸,是有机反应中常用的催化剂。它们的溶剂化热效应早已受到人们的关注,然而用NMR方法来研究它们的溶剂化作用至今未见报道。本工作用119Sn、121Sb及(13)C NMR考察了典型Lewis酸无水SnCl4、SnCl5与二十几种Lewis碱的相互作用,直接证实了Lewis酸碱反应为电子的授受过程。 |
| 关键词: Sn-119 NMR Sb-121 NMR C-13 NMR 无水 SnCl4 无水 SbCl5 Lewis 碱 溶剂化作用 |
| 基金项目: 国家自然科学基金 |
| Abstract: Sn-119,Sb-121 and C-13 NMR study of Lewis acid-base interaction of anhydrous SnCl4and SbCl5with some common solvents is reported. In non-Lewis base solvents, Sn-119 and Sb-121 signals remain unchanged as in neat liquids.In Lewis base solutions, SnCl4 and SnCl, accept electrons from the solvent donor,and Sn-119 and Sb-121 signals all shift to high field significantly. Some slow exchanging C-13 spectra have been obtained,when coordinated solvent molecules donate electrons to the acceptor, C-13 signals shift to low field. C-13 spectrum of DMF solution of SbCl5 shows evidently that the donating atom is nitrogen and the two methyl signals coincide in coordinated species. |
| Keywords: Sn-119 NMR Sb-121 NMR C-13 NMR anbydrous SnCl4 anbydrous SnCl5 ledwis base solvation |
| 投稿时间：1988-01-05 |
| 摘要点击次数: 1537 |
| 全文下载次数: 1325 |
| 毛希安,徐广智.用119Sn、121Sb及13C NMR研究无水SnCl4、SbCl5与Lewis碱的相互作用[J].无机化学学报,1990,6(1):95-98. |
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