Synthesis, Crystal Structure and Thermal Stability of 1D Linear Silver(I) Coordination Polymers with 1,1,2,2-Tetra(pyrazol-1-yl)ethane

Abstract

Abstract:Two new linear silver(I) nitrate coordination polymers with bitopic ligand 1,1,2,2-tetra(pyrazol-1-yl)ethane were synthesized. Synthesized compounds were characterized by IR spectroscopy, elemental analysis, powder X-ray diffraction and thermal analysis. Silver coordination polymers demonstrated a yellow emission near 500 nm upon excitation at 360 nm. Crystal structures of coordination polymers were determined and structural peculiarities are discussed. In both of the structures, silver ions are connected via bridging ligand molecules to form polymeric chains with a five-atomic environment. The coordination environment of the central atom corresponds to a distorted trigonal bipyramid with two N atoms of different ligands in apical positions. The Ag-N bond distances vary in a wide range of 2.31-2.62 Å, giving strongly distorted metallacycles. Thermolysis of coordination polymers in reductive atmosphere (H 2 /He) leads to the formation of silver nanoparticles with a narrow size distribution.

Lanthanide Coordination Polymers as Luminescent Sensors for the Selective and Recyclable Detection of Acetone

“…They have attracted this attention not only because of their diverse architectures, but also because of their potential luminescent sensor applications for detecting cations [1,2], anions [3,4], small molecules [5], gases and vapors [6], biomolecules [7], temperature [8,9], and so on [10,11]. Compared with other luminescent sensors, Ln-CPs based luminescent sensing materials have been a rapidly developing area due to their outstanding merits such as high surface area, easily designed crystal structures, stable frameworks, and permanent porosity, as well as exposed active sites [12][13][14]. Recently, the zwitterionic type of organic ligands have drawn our attention [15,16], which simultaneously bear positive and negative charges with a certain separated distance on the coordination skeleton endowing special physical properties, for example, improved adsorption selectivity of gases or vapors [17].…”

“…Figure S3: PXRD patterns of 1 after detection of acetone (after five cycles reused). Figure S4: 1 H NMR (400 Hz, DMSO-d6) and 13 C NMR (100 Hz, DMSO-d6) spectra of H 2 LCl Ligand. Figure S5: The IR spectra of ligand H 2 LCl, complex 1, 2, and 3.…”

Synthesis, Crystal Structure, Luminescence and Magnetism of Three Novel Coordination Polymers Based on Flexible Multicarboxylate Zwitterionic Ligand

“…Thus, flexible multicarboxylate zwitterionic ligands can be induced to recognize the intrinsic geometric preferences of specific metal ions and to contribute to the structural and topological diversity of CPs. As well as those structural advantages mentioned above, as organic linkers in CPs, flexible multicarboxylate zwitterionic ligands have many other particular properties, which give their CPs potential application as functional materials in magnetism [11][12][13], optical properties [14][15][16], drug delivery [17,18], gas storage [19] and chemical separation [20,21]. Even though CPs have many values, controlling their frameworks is undoubtedly fundamental for determining the properties and applications of the crystalline materials.…”

Synthesis, Crystal Structure and Luminescent Properties of 2D Zinc Coordination Polymers Based on Bis(1,2,4-triazol-1-yl)methane and 1,3-Bis(1,2,4-triazol-1-yl)propane

“…Coordination polymers and metal-organic frameworks attract the unceasing attention of researchers due to their wide range of potential applications [1][2][3][4][5][6]. One of the universal approaches to the construction of metal-organic frameworks uses a combination of metal ions with aromatic dior polycarboxylate donors and rigid or flexible N-donor bitopic ligands [7,8].…”