Supramolecular Architectures Constructed from Piperazine and Substituted Benzoic Acids
作者:Zi-yun Chen、Meng-xia Peng
DOI:10.1007/s10870-010-9852-1
日期:2011.2
Piperazine (pip) were reacted with benzoic acid (Hba) and different substituted benzoic acid, such as o-chlorobenzoic acid (Hocba), m-chlorobenzoic acid (Hmcba), p-chlorobenzoic acid (Hpcba), o-aminobenzoic acid (Hoaba), p-aminobenzoic acid (Hpaba), affording a series of compounds [H2pip][ba]2 (1), [H2pip][ocba]2 (2), [H2pip][mcba]2 (3), [H2pip][pcba]2 (4), [H2pip][oaba]2 (5), and [H2pip][paba]2 (6). Extensive N–H···O hydrogen bonds are found in 1–6, featuring different hydrogen-bonding motifs. Compounds 1–4 have two-dimensional layers stabilized by strong N–H···O hydrogen bonds, while compounds 5 and 6 exhibit one-dimensional ribbons formed by N–H···O hydrogen bonds. Moreover, in compound 6, the existence of water molecules extends the one-dimensional ribbons into a three-dimensional supramolecular structure via hydrogen bonds. CCDC: 672374, (1); 672375, (2); 672376, (3); 672377, (4); 672378, (5); 672379, (6). The molecular self-assembly of piperazine (pip) with benzoic acid (Hba), o-chlorobenzoic acid (Hocba), m-chlorobenzoic acid (Hmcba), p-chlorobenzoic acid (Hpcba), o-aminobenzoic acid (Hoaba), and p-aminobenzoic acid (Hpaba) results in six new supramolecular networks 1-6, respectively.
哌嗪(pip)与苯甲酸(Hba)和不同取代的苯甲酸,如邻氯苯甲酸(Hocba)、间氯苯甲酸(Hmcba)、对氯苯甲酸(Hpcba)、邻氨基苯甲酸(Hoaba)反应)、对氨基苯甲酸 (Hpaba),得到一系列化合物 [H2pip][ba]2 (1)、[H2pip][ocba]2 (2)、[H2pip][mcba]2 (3)、[H2pip] ][pcba]2 (4)、[H2pip][oaba]2 (5) 和 [H2pip][paba]2 (6)。 1-6 中发现了广泛的 N-H···O 氢键,具有不同的氢键基序。化合物1-4具有由强N-H·O氢键稳定的二维层,而化合物5和6则表现出由N-H·O氢键形成的一维带。此外,在化合物6中,水分子的存在通过氢键将一维带延伸成三维超分子结构。中央结算公司:672374,(1); 672375, (2); 672376, (3); 672377, (4); 672378, (5); 672379,(6)。哌嗪 (pip) 与苯甲酸 (Hba)、邻氯苯甲酸 (Hocba)、间氯苯甲酸 (Hmcba)、对氯苯甲酸 (Hpcba)、邻氨基苯甲酸 (Hoaba) 和对氨基苯甲酸 (Hpaba) 分别产生六个新的超分子网络 1-6。