DataVXCrystal Growth & DesignPaper
journal article·2019-12-04

Precisely Tuning the Coordination Modes of the 2-Methyl-1H-imidazole-4,5-dicarboxylic Acid Ligand, Affording a Series of Metal–Organic Compounds with Diverse Structures and Properties

Fei Li, Xin Zhang, Ming-Ling Sun, Yayong Sun, Jian Lu, Xin-Yi Cao, Ye-Yan Qin, Yuan-Gen Yao

Crystal Growth & Design· Volume 19· Issue 12
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Source abstract

Abstract

Five new coordination polymers, [Cd2(Hmidc)2(bpp)]·2H2O (1), [Zn3(midc)2(bpp)(H2O)2]·2H2O (2), [Me2NH2]2[Zn3(midc)2(HCOO)2] (3), [Mg(Hmidc)(H2O)2]·H2O (4), and [Co(Hmidc)(bpp)] (5) (bpp = 1,3-bis(4-pyridyl) propane, H3midc = 2-methyl-1H-imidazole-4,5-dicarboxylic acid), were synthesized. Compounds 1–3 feature 3D pillar-layered networks with different topologies, in which the H3midc ligand coordinantes with Zn2+/Cd2+ to form a layer and bpp or HCOO– bridges the adjacent layers as a pillar. In compound 4, however, unanticipated 1D chains connect with each other through hydrogen bonds, resulting in a 3D supramolecular framework. Compound 5 displays a wavelike chain form. The UV–vis absorption spectra and the calculations of density of states demonstrate that the emission spectra of compounds 1–4 result from ligand-centered charge transition. The solid-state luminescence quantum yield of compound 3 reaches up to 20.69%. In addition, compound 1 has a preferable gas adsorption selectivity of CO2 over CH4 and N2 in natural gas at low pressure.
Source: openalex_inverted_index · Quality: baseline

Research context

Polymers

OpenAlex topics: Metal-Organic Frameworks: Synthesis and Applications · Covalent Organic Framework Applications · Crystallography and molecular interactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People’s Republic of China

University of Chinese Academy of Sciences, 100049 Beijing, People’s Republic of China

State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People’s Republic of China

Funding

Natural Science Foundation of Guizhou Province · Ministry of Science and Technology of the People's Republic of China · Natural Science Foundation of Fujian Province · National Natural Science Foundation of China · Chinese Academy of Sciences · Science and Technology Service Network Initiative

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