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.

中文翻译：

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溴化草酸氢盐与二质子化 1,4-二氮杂双环 [2.2.2] 辛烷平衡离子

摘要 分离出两种由双质子化的 1,4-二氮杂双环 [2.2.2] 辛烷 (DABCO) 分子作为阳离子，溴化物和草酸氢作为阴离子组成的新盐，并通过 X 射线衍射分析对其进行了结构表征。盐 [DABCOH2]{[HC2O4][Br]} (1) 在正交晶系中结晶，空间群 P212121，a = 9.0809(7), b = 9.5156(7), c = 12.3558(9) Å, V = 1067.67(14) Å3 和 Z = 4。盐 [DABCOH2]2{[HC2O4][Br]3}·H2O (2) 在正交晶系中结晶，空间群 Pnma，a = 26.6554(17)，b = 7.3711 (4), c = 10.7421(7) Å, V = 2110.6(2) Å3 和 Z = 4。该化合物由 [DABCOH2][HC2O4]2 (L 1 ) 和 ZnBr2 的乙醇溶液以 2 的摩尔比制备:1 和 1:1，分别。盐 1 和 2 表现出扩展的氢键网络，导致超分子拓扑。