基于不同的杂环羧基,合成了两种化合物UO 2(C 16 H 7 N 4 O 4)2 ·2H 2 O(1)和UO 2(C 20 H 12 N 5 O 2)2(2)。配体2,3-吡嗪并[1,10]菲咯啉-2,3-二羧酸(H 2 L 1)和2,6-双(2-吡嗪基)吡啶-4-苯甲酸(HL 2)。通过元素分析,红外光谱,PXRD,热重分析和紫外可见光谱对这两种化合物进行了表征。单晶X射线衍射分析表明,化合物1和2均表现出2D片状结构。此外,化合物的荧光淬灭性质的研究1和2表明,发光强度为既减小1和2是特别明显与硝基芳香化合物浓度的增加,即使硝基芳族化合物是在非常低的浓度(对于1为15 ppm时,为2它是20 ppm),也可以检测到。实验结果表明在硝基芳族化合物存在下,初始荧光强度的高选择性猝灭。通过使用SV方程(I 0 / I)= K SV [A] + 1计算硝基芳香族化合物的淬灭常数,我们可以看到,淬灭剂2
基于不同的杂环羧基,合成了两种化合物UO 2(C 16 H 7 N 4 O 4)2 ·2H 2 O(1)和UO 2(C 20 H 12 N 5 O 2)2(2)。配体2,3-吡嗪并[1,10]菲咯啉-2,3-二羧酸(H 2 L 1)和2,6-双(2-吡嗪基)吡啶-4-苯甲酸(HL 2)。通过元素分析,红外光谱,PXRD,热重分析和紫外可见光谱对这两种化合物进行了表征。单晶X射线衍射分析表明,化合物1和2均表现出2D片状结构。此外,化合物的荧光淬灭性质的研究1和2表明,发光强度为既减小1和2是特别明显与硝基芳香化合物浓度的增加,即使硝基芳族化合物是在非常低的浓度(对于1为15 ppm时,为2它是20 ppm),也可以检测到。实验结果表明在硝基芳族化合物存在下,初始荧光强度的高选择性猝灭。通过使用SV方程(I 0 / I)= K SV [A] + 1计算硝基芳香族化合物的淬灭常数,我们可以看到,淬灭剂2
Ruthenium(II) Complexes of Carboxylated Terpyridines and Dipyrazinylpyridines
作者:Arta Stublla、Pierre G. Potvin
DOI:10.1002/ejic.201000122
日期:2010.7
specifically to assess the effects of carboxylation and of inserting a phenylene spacer between the tridentate portion and the carboxyl group. The dipyrazinylpyridinecomplexes had HOMO levels stabilized by approximately 1 eV relative to the terpyridine analogues, and showed positive-shifted electrochemical potentials and redshifted electronic absorptions. Phenylene spacers were found to act as electron-donating
相对于三联吡啶类似物,二吡嗪基吡啶配合物的 HOMO 能级稳定了大约 1 eV,并显示出正移的电化学势和红移的电子吸收。发现亚苯基间隔物充当给电子基团,并且最低能量的 UV/Vis 跃迁显示出配体内的特征。
Co and Cu crystalline frameworks built with nitrogen heterocycle polycarboxylic acids and their catalytic property towards the reduction of p-nitrophenol
heterocycle polycarboxylic acid ligands by solvothermal method. Both complexes were characterized by infrared and ultraviolet spectroscopy, powder X-ray diffraction analysis, and thermogravimetric analysis. The X-ray single crystal structural analysis shows that complex 1 is a one-dimensional double-chain supramolecular structure built by intermolecular hydrogen bonds. While complex2 is a three-dimensional framework
The various structures and photocatalysis properties constructed by nitrogen heterocycle carboxylate ligand
作者:Xiao-Xin Han、Xue Han、Ying Wang、Di Shang、Yong-Heng Xing、Feng-Ying Bai
DOI:10.1016/j.poly.2018.05.026
日期:2018.9
Three novel transition metal complexes, [Co(L)(Cl)(H2O)]center dot 3H(2)O (1), [Cu(L)(2)]center dot 5H(2)O (2) and [Ni(L)(2)]center dot 8H(2)O (3) were synthesized at hydrothermal conditions based on ligand (HL: 2,6-bis(2-pyrazinyl)pyridine-4-benzoic acid) and transition metal Co(II), Cu(I), Ni(II) salts. All the complexes were characterized by elemental analysis, IR spectroscopy, UV-Vis spectroscopy and powder X-ray diffraction (PXRD). The X-ray single crystal diffraction showed that complexes 1 and 2 are 2D planar structures and complex 3 is a 1D chain structure. In addition, we investigated the photocatalysis performance of the complexes 1-3, which degraded organic dyes methylene blue (MB) under UV-Vis irradiation. According to the experimental phenomenon, compared with the other complexes, complex 1 achieved a higher photocatalytic activity, after photocatalyzing for 80 min, the degradation rate of dye is as high as 96%. (C) 2018 Elsevier Ltd. All rights reserved.
Two uranyl heterocyclic carboxyl compounds with fluorescent properties as high sensitivity and selectivity optical detectors for nitroaromatics
detected. The experimental results suggest a high selective quenching of initial fluorescence intensity in the presence of nitroaromaticcompounds. And by calculating the quenching constants of the nitroaromatics using the SV equation (I0/I) = KSV[A] + 1, we can see the KSV values of the quencher 2,4,6-trinitrophenol are both largest for the two compounds, and the values are 1.6 × 106 and 8.5 × 105 for
基于不同的杂环羧基,合成了两种化合物UO 2(C 16 H 7 N 4 O 4)2 ·2H 2 O(1)和UO 2(C 20 H 12 N 5 O 2)2(2)。配体2,3-吡嗪并[1,10]菲咯啉-2,3-二羧酸(H 2 L 1)和2,6-双(2-吡嗪基)吡啶-4-苯甲酸(HL 2)。通过元素分析,红外光谱,PXRD,热重分析和紫外可见光谱对这两种化合物进行了表征。单晶X射线衍射分析表明,化合物1和2均表现出2D片状结构。此外,化合物的荧光淬灭性质的研究1和2表明,发光强度为既减小1和2是特别明显与硝基芳香化合物浓度的增加,即使硝基芳族化合物是在非常低的浓度(对于1为15 ppm时,为2它是20 ppm),也可以检测到。实验结果表明在硝基芳族化合物存在下,初始荧光强度的高选择性猝灭。通过使用SV方程(I 0 / I)= K SV [A] + 1计算硝基芳香族化合物的淬灭常数,我们可以看到,淬灭剂2
The effect of ligand/ metal-ligand ratio on the structural architectures of five different 1D zinc(II) coordination polymers with pyridyl derivative ligands
作者:Juan Song、Miao Wu、Yun-Long Zhou、Ling-Xia Jin、Yan-Hong Gao、Hui-Ping Dai
DOI:10.1016/j.molstruc.2024.137955
日期:2024.7
structurally characterized. Single crystal X-ray analysis revealed that compound shows one-dimensionalwavechainstructure, compound to show one-dimensional ladder chainstructure, one-dimensional V-shaped chainstructure, one-dimensional linear chainstructure and one-dimensional A-shaped chainstructure, respectively. The structure differences of – show that ligand including auxiliary ligand and metal-ligand