New Examples of Metal Coordination Architectures of 3,3′,4,4′-Biphenyltetracarboxylic Acid – Syntheses, Crystal Structures, and Physical Properties
New Examples of Metal Coordination Architectures of 3,3′,4,4′-Biphenyltetracarboxylic Acid – Syntheses, Crystal Structures, and Physical Properties
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DOI：
10.1002/zaac.200800354
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
Guang-Xiang Liu;Kunpeng Zhu;Hong Chen;Rong-Yi Huang;X. Ren
中科院分区：
文献类型：
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作者：
Guang-Xiang Liu;Kunpeng Zhu;Hong Chen;Rong-Yi Huang;X. Ren
四种新的金属有机骨架[Cu（2，2 ′-bipy）2（ox）（H2O）2]·（H2bptc）（1）、[Cu（bptc）0.5（phen）（H2O）]·H2O（2）、Co2（bptc）（bmb）1.5（3）和[Cd2（bptc）（bmb）]·3H2O（4）（H4 bptc = 3，3 ′，4，4 ′-联苯四甲酸，ox =草酸盐，phen = 1，10-菲咯啉，2，2 ′-bipy = 2，2 ′-联吡啶和bmb = 4，4 ′-双（（1H-咪唑-1-基）甲基）联苯），通过相应的金属盐与H4 bptc及含氮辅助配体反应，得到了一系列配合物，其结构经X射线单晶衍射测定。结果表明，1具有由离散离子实体组成的0-D结构，而2具有1-D梯形结构。此外，1和2分别存在π-π堆积和分子间氢键作用，形成三维超分子结构.在3-4中，分别用bptc羧酸酯基团的两种不同配位模式形成起伏的2-D金属-bptc层结构，其通过bmb进一步延伸成3-D结构。研究了化合物1和3的磁性。研究了4的光致发光性质。此外，非线性光学测量表明，4显示二次谐波产生（SHG）响应的0.7倍，尿素。
Four new metal-organic frameworks [Cu2(2,2′-bipy)2(ox)(H2O)2]·(H2bptc) (1), [Cu(bptc)0.5(phen)(H2O)]·H2O (2), Co2(bptc)(bmb)1.5 (3) and [Cd2(bptc) (bmb)]·3H2O (4) (H4bptc = 3,3′,4,4′-biphenyltetracarboxylic acid, ox = oxalate, phen = 1,10-phenanthroline, 2,2′-bipy = 2,2′-bipyridine and bmb = 4,4′-bis((1H-imidazol-1-yl)methyl)biphenyl), were obtained by reactions of the corresponding metal salts with H4bptc and N-containing auxiliary ligands and their structures were determined by single-crystal X-ray diffraction. The results reveal that 1 has a 0-D structure consisting of discrete ionic entities, while 2 features a 1-D ladder structure. Additionally, there exist π-π stacking and intermolecular hydrogen-bonding interactions in 1 and 2, respectively, forming 3-D supramolecular structures. In 3-4, undulating 2-D metal-bptc layer structures are formed with two different coordination modes of bptc carboxylate groups, respectively, which are further extended by bmb into 3-D structures. Magnetic properties of 1 and 3 have been studied. The photoluminescence property of 4 has also been investigated. Moreover, nonlinear optical measurements showed that 4 displayed a second-harmonic-generation (SHG) response of 0.7 times of that for urea.