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[NMe 4 ][I 4 Br 5 ]: A new Iodobromide from an Ionic Liquid with Halogen–Halogen Interactions
Author(s) -
Mann Lisa,
Voßnacker Patrick,
Müller Carsten,
Riedel Sebastian
Publication year - 2017
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201604392
Subject(s) - halogen , ionic liquid , ionic bonding , chemistry , inorganic chemistry , organic chemistry , ion , alkyl , catalysis
Tetramethylammonium tetraiodopentabromide [NMe 4 ][I 4 Br 5 ] was the first iodobromide to be synthesized and crystallized in an ionic liquid as well as in dichloromethane. The new iodobromides show different structure motives yet are unknown from other nonahalides and can be better described as [(I 2 Br 3 ) − ⋅2 IBr]. The additional IBr units are connected by halogen–halogen interactions on the central V‐shaped [I 2 Br 3 ] − . The characterization was performed by Raman spectroscopy and single crystal X‐ray structure determination. Conductivity measurements, thermogravimetric analysis and quantum‐chemical calculations completed the structural discussion.