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Towards Clathrates: Frozen States of Hydration of tert ‐Butylamine
Author(s) -
Dobrzycki Łukasz,
Taraszewska Paulina,
Boese Roland,
Cyrański Michał K.,
Cirkel Sebastian A.
Publication year - 2015
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201412331
Subject(s) - clathrate hydrate , hydrate , ice ih , chemistry , crystallization , dilution , molecule , crystallography , hydrogen , crystal structure , atmospheric temperature range , crystal (programming language) , water of crystallization , inorganic chemistry , thermodynamics , organic chemistry , physics , computer science , programming language
The dilution of tert‐butylamine (tBA) with water and subsequent cooling leads to a large series of different crystalline hydrates by an in situ IR laser melting‐zone procedure. The crystal structures were determined for tBA⋅n H 2 O, with n=0, ${{ 1/4 }}$ , 1, 7 ${{ 1/4 }}$ , 7 ${{ 3/4 }}$ , 9 ${{ 3/4 }}$ , 11, and 17. For the two lower hydrates (n= ${{ 1/4 }}$ , 1), one‐ and two‐dimensional hydrogen‐bonded networks are formed, respectively. The higher hydrates (n>1) exhibit a clathrate‐like three‐dimensional water framework with the tBA molecules as part of, or sitting inside, the cages. In all cases, tBA is hydrogen‐bonded to the H 2 O framework. In the intermediate range (1
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