network with the coexistence of polycatenation and interdigitation. JOU-16 exhibits a fascinating self-catenated three-dimensional framework with a new point symbol of (44·610·8)(65·8)(66). JOU-17 displays a novel 1D + 3D + 3D → 3D entangled framework with features of both polycatenation and polythreading. In addition, the electrochemical properties of these compounds have also been studied.
三种新型纠缠配位聚合物(CPs),即[Cu 4(BPB)5(HPW 12 O 40)2 ]·2H 2 O(JOU-15),[Cu 3(BPB)3 PW 12 O 40 ](JOU -16)和[Cu 3(BPBP)3 PW 12 O 40 ](JOU-17)已通过在水热条件下将柔性N-给体配体和Keggin型多金属氧酸盐与铜离子结合而成功合成。结构表征表明,JOU-15具有不寻常的1D + 1D→2D纠缠网络,并同时具有多级连接和叉指。JOU-16展示了一个引人入胜的自分类三维框架,其新符号为(4 4 ·6 10 ·8)(6 5 ·8)(6 6)。JOU-17展示了一个新颖的1D + 3D + 3D→3D纠缠框架,具有聚类和多线程功能。另外,还研究了这些化合物的电化学性质。
Tiara[<i>n</i>]uril: A Glycoluril-Based Macrocyclic Host with Cationic Walls
作者:Pradeep Kumar Chandrakumar、Rajni Dhiman、Clifford E. Woodward、Hasti Iranmanesh、Jonathon E. Beves、Anthony I. Day
DOI:10.1021/acs.joc.8b02913
日期:2019.4.5
The synthesis of new cationic macrocyclic host molecules is described. These macrocycles are comprised of glycoluril oligomers linked to two pyrazolium groups, which form part of a cationic wall facing into their cavities. A number of derivatives have been prepared with an objective to increasing the cavity size, and each new product has been fully characterized. Preliminary investigations of pKas
描述了新的阳离子大环主体分子的合成。这些大环由连接两个吡唑基的甘脲低聚物组成,两个吡唑基形成面对它们的腔的阳离子壁的一部分。为了增加型腔的尺寸,已经制备了许多衍生物,并且每种新产品都已得到充分表征。对Me 10 Tu [3] 2+的p K a s的初步研究和L-谷氨酰胺的相互作用表明,结合具有H键供体基团的阴离子分子的潜力。
GB1061120
申请人:——
公开号:——
公开(公告)日:——
Pro-porous Coordination Polymers of the 1,4-Bis((3,5-dimethyl-1<i>H</i>-pyrazol-4-yl)-methyl)benzene Ligand with Late Transition Metals
Solvothermal reactions of the flexible, pyrazole-based 1,4-bis((3,5-dimethyl-1H-pyrazol-4-yl)methyl)benzene ligand (H2BDMPX) with late transition metal ions allowed the isolation of the four coordination compounds M-x(BDMPX) (x = 1 for M = Zn, 1; Co, 2; Cd, 3; x = 2 for M = Cu, 4). The investigation of the thermal behavior assessed the high thermal robustness of these materials, which are stable in air at least up to 300 degrees C, with the Cd(II) derivative starting to decompose only around 500 degrees C. As retrieved by ab initio X-ray powder diffraction, the isomorphous compounds 1-3 possess a dense 3-D network featuring rhombic motifs hinged about rigid and parallel chains of tetrahedral MN4 chromophores. As demonstrated by thermodiffractometric measurements, temperature increase triggers framework flexibility. The latter is at work also when N-2 adsorption is assayed at 77 K:1 and 2 show permanent porosity, with BET and Langmuir specific surface areas of 515, 667 m(2)/g and 209, 384 m(2)/g, respectively. 1 and 2 thus represent an intriguing example of "porosity without pores", their pro-porous nature being explained in terms of the flexibility of the rhombic motifs, stimulated by the gas probe and facilitated by the nature of the ligand.