Opening the Third Century of Polyhalide Chemistry: Thermally Stable Complex with "Trapped" Dichlorine.
Andrey N UsoltsevSergey A AdoninBoris A KolesovAlexander S NovikovVladimir P FedinMaxim N SokolovPublished in: Chemistry (Weinheim an der Bergstrasse, Germany) (2020)
Unlike polyhalides of heavier halogens, polychlorides still remain exotic curiosities. Herein, we report preparation and investigation of complexes Cat2 {[TeCl6 ](Cl2 )} (cat=1-methylpyridinium (1) and tetramethylammonium (2)) where dichlorine units are "trapped" by chlorotellurate(IV) anions via a system of non-covalent Cl⋅⋅⋅Cl interactions. Complex 2 reveals a record thermal stability (>100 °C) for inclusion compounds with Cl2 , indications that such compounds can be used as solid Cl2 source.