Bromide hydrogen oxalate salts with the diprotonated 1,4-diazabicyclo[2.2.2]octane counterion
Author:
Ndiaye Mamadou1, Diop Mouhamadou Birame2, Samb Abdoulaye1, Diop Libasse2, Oliver Allen G.3, Plasseraud Laurent4
Affiliation:
1. Département de Chimie, Faculté des Sciences et Techniques , Laboratoire des Produits Naturels (L.P.N), Université Cheikh Anta Diop , Dakar , Senegal 2. Département de Chimie, Faculté des Sciences et Techniques , Laboratoire de Chimie Minérale et Analytique, Université Cheikh Anta Diop , Dakar , Senegal 3. Department of Chemistry and Biochemistry , University of Notre Dame , South Bend , IN 46557-5670 , USA 4. Faculté des Sciences , ICMUB UMR CNRS 6302, Université de Bourgogne Franche-Comté , F-21000 Dijon , France
Abstract
Abstract
Two new salts composed of the diprotonated 1,4-diazabicyclo[2.2.2]octane (DABCO) molecule as the cations and bromide and hydrogen oxalate as the anions have been isolated and structurally characterized by X-ray diffraction analysis. The salt [DABCOH2]{[HC2O4][Br]} (1) crystallizes in the orthorhombic system, space group P212121 with a = 9.0809(7), b = 9.5156(7), c = 12.3558(9) Å, V = 1067.67(14) Å3 and Z = 4. The salt [DABCOH2]2{[HC2O4][Br]3}·H2O (2) crystallizes in the orthorhombic system, space group Pnma with a = 26.6554(17), b = 7.3711(4), c = 10.7421(7) Å, V = 2110.6(2) Å3 and Z = 4. The compounds were prepared from ethanolic solutions of [DABCOH2][HC2O4]2 (L
1
) and ZnBr2 in molar ratios of 2:1 and 1:1, respectively. The salts 1 and 2 exhibit extended hydrogen bonding networks leading to supramolecular topologies.
Publisher
Walter de Gruyter GmbH
Subject
General Chemistry
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