• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Syntheses, crystal structures, photoluminescent/magnetic properties of four new coordination polymers based on 2,3 ',4,5 '-biphenyltetracarboxylic acid
【24h】

Syntheses, crystal structures, photoluminescent/magnetic properties of four new coordination polymers based on 2,3 ',4,5 '-biphenyltetracarboxylic acid

机译：基于2,3'，4,5'-联苯四甲酸的四种新型配位聚合物的合成，晶体结构，光致发光/磁性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Hydrothermal reactions of 2,3',4,5'-biphenyltetracarboxylic acid (H(4)bptc) with divalent copper, cobalt and nickel salts afford four novel coordination polymers, namely, {[Cu-2.5(mu(3)-OH-)(bptc(4-))(4,4'-bpy)(H2O)]center dot 1.5H(2)O}(n) (1), {[Cu-2(bptc(4-))(H2O)(4)]center dot 4H(2)O}(n) (2), {[Co-1.5(Hbptc(3-))(1,4-bib)(0.5)(H2O)(5)]center dot 2H(2)O}(n) (3), and {[Ni-2(bptc(4-))(1,4-bib)(1.5)(H2O)(5)]center dot 5H(2)O}(n) (4), in the presence of ancillary ligands (4,4'-bpy = 4,4'-bipyridine, 1,4-bib = 1,4-bis(1-imidazolyl)benzene). Their structures were determined by single-crystal X-ray diffraction analyses and further characterized by IR spectra, elemental analyses, powder X-ray diffraction (PXRD), and thermogravimetric (TG) analyses. Complex 1 exhibits a 3D framework with one-dimensional channels along the [111] direction, which can be defined as a (4,10)-connected deh1 net with the point Schlafli symbol of {3.4 (5)}(2){3 (4).4 (12).5 (10.)6 (14).7 (3).8 (2)}. Compound 2 contains two interpenetrated 3D networks, each of which can be viewed as a (4,4)-connected mog moganite network with the point Schlafli symbol of {4.6 (4).8}(2){4 (2).6 (2).8 (2)}. In Complex 3, both the Hbptc(3-) and the 1,4-bib show mu(2) coordination mode, the former of which links two Co-2 cations to form a 1D anionic chain and the latter of which links two Co1 cations to generate a 1D cationic chain. Interestingly, the 1D anionic chains are assembled through abundant strong hydrogen bonds to generate a 3D supermolecular structure with large one-dimensional channels occupied by the 1D cationic chains along the c axis. Complex 4 consists of two interpenetrated 3D networks, each of which can be simplified as a novel (3,4,4)-connected framework with the point Schlafli symbol of {4.6.8}{4.6 (3).8 (2)}{6 (4).8.10}. In addition, the magnetic properties for 1, 2 and the photoluminescent properties for 3, 4 were investigated. The magnetic results show that there exist antiferromagnetic interactions between Cu(II) ions in 1 and 2.
机译：2,3'，4,5'-联苯四甲酸（H（4）bptc）与二价铜，钴和镍盐的水热反应可得到四种新型配位聚合物，即{[Cu-2.5（mu（3）-OH -）（bptc（4-））（4,4'-bpy）（H2O）]中心点1.5H（2）O}（n）（1），{[Cu-2（bptc（4-））（ H2O）（4）]中心点4H（2）O}（n）（2），{[Co-1.5（Hbptc（3-））（1,4-bib）（0.5）（H2O）（5）]中心点2H（2）O}（n）（3）和{[Ni-2（bptc（4-））（1,4-bib）（1.5）（H2O）（5）]中心点5H（2 } O}（n）（4），在辅助配体存在下（4,4'-bpy = 4,4'-联吡啶，1,4-bib = 1,4-双（1-咪唑基）苯）。它们的结构通过单晶X射线衍射分析确定，并进一步通过红外光谱，元素分析，粉末X射线衍射（PXRD）和热重（TG）分析进行表征。复合体1展示了一个3D框架，该框架具有沿[111]方向的一维通道，可以将其定义为一个连接（4,10）的deh1网，其点Schlafli符号为{3.4（5）}（2）{3 （4）.4（12）.5（10.）6（14）.7（3）.8（2）}。化合物2包含两个互穿的3D网络，每个网络都可以看作是连接（4,4）的Mog锰铁矿网络，其点Schlafli符号为{4.6（4）.8}（2）{4（2）.6） （2）.8（2）}。在复合物3中，Hbptc（3-）和1,4-bib均显示mu（2）配位模式，前者将两个Co-2阳离子连接形成一维阴离子链，而后者将两个Co1阳离子连接。阳离子生成一维阳离子链。有趣的是，一维阴离子链通过丰富的强氢键进行组装，以生成一维3D超分子结构，其中一维阳离子链沿c轴占据一维通道。复合体4由两个互穿的3D网络组成，每个网络都可以简化为一个新颖的（3,4,4）连接的框架，其点Schlafli符号为{4.6.8} {4.6（3）.8（2）} {6（4）.8.10}。另外，研究了1、2的磁性和3、4的光致发光性质。磁性结果表明1和2中的Cu（II）离子之间存在反铁磁相互作用。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号