Abstract
The crystal structures of ligand precursor bis(imidazolium) salts 1,1′-methylenebis(3-tert-butylimidazolium) dibromide monohydrate, C15H26N4
+·2Br−·H2O or [
tBuNHC2Me][Br]2·H2O, 1,1′-(ethane-1,2-diyl)bis(3-tert-butylimidazolium) dibromide dihydrate, C16H28N4
+·2Br−·2H2O or [
tBuNHC2Et][Br]2·2H2O, 1,1′-methylenebis[3-(2,4,6-trimethylphenyl)imidazolium] dibromide dihydrate, C25H30N4
2+·2Br−·2H2O or [MesNHC2Me][Br]2·2H2O, and 1,1′-(ethane-1,2-diyl)bis[3-(2,4,6-trimethylphenyl)imidazolium] dibromide tetrahydrate, C26H32N4
2+·2Br−·4H2O or [MesNHC2Et][Br]2·4H2O, are reported. At 293 K, [
tBuNHC2Me][Br]2·H2O crystallizes in the P21/c space group, while [
tBuNHC2Et][Br]2·2H2O crystallizes in the P21/n space group at 100 K. At 112 K, [MesNHC2Me][Br]2·2H2O crystallizes in the orthorhombic space group Pccn while [MesNHC2Et][Br]2·4H2O crystallizes in the P21/c space group at 100 K. Bond distances and angles within the imidazolium rings are generally comparable among the four structures. All four bis(imidazolium) salts co-crystallize with one to four molecules of water.
Funder
National Science Foundation, Directorate for Mathematical and Physical Sciences
National Science Foundation, Directorate for Education and Human Resources
U.S. Department of Defense, U.S. Army
National Institutes of Health, National Institute of General Medical Sciences
Publisher
International Union of Crystallography (IUCr)
Subject
Condensed Matter Physics,General Materials Science,General Chemistry
Cited by
1 articles.
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1. Crystal structure of 1-(2,6-diisopropylphenyl)-1H-imidazole;Acta Crystallographica Section E Crystallographic Communications;2023-10-26