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  Home > JCE Print > Journal of Chemical Education > Issues > 1997  > November  >
In the Laboratory
The Microscale Laboratory
The Preparation of T1[BF4]
Francisco J. Arnáiz
Universidad de Burgos, Lab. de Química Inorgánica, 09001 Burgos, Spain
Cover
November 1997
Vol. 74 No. 11
p. 1332
Abstract
Thallium tetrafluoroborate is a useful reagent in chemistry labs for preparing tetrafluoroborate salts via abstraction of coordinated halide ions. Although many of these species can be isolated as perchlorates by reacting the appropriate parent halocompound with silver perchlorate, the explosive nature of many perchlorate salts prompted a search for substitutes. Tl[BF4], a good alternative to AgClO4, can be prepared by treating the metal or carbonate with aqueous tetrafluoroboric acid. However, the procedure outlined here, based on the reaction of thallium with hydrogen peroxide and tetrafluoroboric acid, is specially appropriate for teaching purposes.
More Information
*  Citation
 Arnaiz, Francisco J. J. Chem. Educ. 1997 74 1332.
*  Keywords
 Inorganic Chemistry, Microscale, and Inorganic Synthesis
*  History
 Created:
Last Updated:		 July 26, 1999
June 23, 2005
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