Size‐Selective Sorption of Small Organic Molecules in One‐Dimensional Channels of an Ionic Crystalline Organic–Inorganic Hybrid Compound Stabilized by π–π Interactions

Abstract

The design and syntheses of porous materials such as zeolites and metal-organic frameworks (MOFs) are areas of intense research because of their unique properties in gas storage, separation, and heterogeneous catalysis.[1] Crystalline microporous zeolites show shape-selective adsorption properties because the sizes of the channel apertures formed by the covalently bonded [TO 4 ] (T= Si, Al, P, Ti, etc.) and/or [MO 6 ] (M = V, Mn, Mo, etc.) units can be controlled.

Crystal structure of diaqua(μ2-1,1′-biphenyl-4,4′-diylbis(1H-imidazole)-κ2 N:N′)tetrakis(3-carboxy-5-ethylpyridine-2-carboxylato-κ2 N,O)dizinc(II), C54H50N8O18Zn2

“…As an important branch in the eld of supramolecular chemistry and crystal engineering, supramolecular coordination polymeric networks have stimulated the interests of chemists over the past few decades for their high impact in the domain such as catalysis, molecule storage, ion-exchange, separations, magnetism, and photoactive materials [1][2][3][4][5][6]. It is well known that coordination ability of the organic ligands is among the very key factors for the assembly of topologically new MOFs with improved functional properties as well as N-containing auxiliary ligands can modify the structures and properties of the resulting metal-organic complexes [7,8].…”

Crystal structure of poly[diaqua-4-carboxylatephenylacetate-κ2O,O'-1,2- di-(4-pyridyl-κN)-ethane-nickel(II) 0.33 hydrate, Ni(C9H6O4)(C12H10N2)(H2O)2·(H2O)0.33, C21H20.66N2NiO6.33

“…Inorganic-organic hybrid coordination polymeric frameworks have been widely studied, due to their potential application in the fields of magnetism, fluorescence, catalysis etc [1][2][3][4][5][6]. It is well known that organic ligands play crucial roles in the design and construction of desirable frameworks.…”

Highly Selective Sorption of Small Polar Molecules by a Nonporous Ionic Crystal of a Lacunary Keggin-type Heteropoly Anion and Alkali Metal Cations

“…1,2,12 Ionic crystals of polyoxometalates are nanostructured materials that are capable of selectively absorbing molecules. [13][14][15][16][17][18][19][20][21][22] These polyoxometalates can absorb molecules into the solid bulk via strong interactions between the absorbed molecules and constituent cations and/or anions. O, pyridine), and alkali-metal cations exhibit selective-sorption properties; that is, they discriminate the molecules depending on the size, polarity, and hydrophobicity/hydrophilicity.…”

“…O, pyridine), and alkali-metal cations exhibit selective-sorption properties; that is, they discriminate the molecules depending on the size, polarity, and hydrophobicity/hydrophilicity. [13][14][15][16][17][18][19][20] The absorption properties are finely controlled by adjusting the charge of the polyoxometalates and the organic moiety of the macrocations. For example, K 3 [Cr 3 O(OOCH) 6 solution with vigorous stirring.…”