Holding Open Micropores with Water: Hydrogen-Bonded Networks Supported by Hexaaquachromium(III) Cations
| Autor: | Joel Reid, V. Nicholas Vukotic, Patrick J. Dwyer, Hiroshi Kitagawa, George K. H. Shimizu, Dae-Woon Lim, Masaki Donoshita, Jared M. Taylor, Benjamin S. Gelfand, Stanislav L. Veinberg |
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| Rok vydání: | 2018 |
| Předmět: |
Hydrogen
010405 organic chemistry Chemistry Hydrogen bond General Chemical Engineering Biochemistry (medical) Supramolecular chemistry chemistry.chemical_element Cooperativity Sorption General Chemistry 010402 general chemistry 01 natural sciences Biochemistry 0104 chemical sciences Crystallography Octahedron Materials Chemistry Environmental Chemistry Metal aquo complex Porosity |
| Zdroj: | Chem. 4:868-878 |
| ISSN: | 2451-9294 |
| DOI: | 10.1016/j.chempr.2018.02.004 |
| Popis: | Summary To form any porous solid requires payment of an energetic penalty to create voids through either strong bonds or many weak interactions working in concert. Here, we present a porous solid that is composed, after pore activation, of 27 wt % water and sustained by charge-assisted hydrogen bonds between hexaaquachromium(III) cations and organophosphonate anions. The network forms a pillared layered motif including guest solvents, as confirmed crystallographically. Although aquo ligands are an integral part of the hydrogen-bonding network that sustains the pores, activation under high vacuum is possible, and the network demonstrates reversible CO 2 sorption. The stability of the network is attributed to the inertness of the octahedral d 3 Cr(III) center in combination with high degrees of complementarity and cooperativity of hydrogen bonds. The sub-nanometer pores are guest selective on the basis of size, shape, and chemical functionality. |
| Databáze: | OpenAIRE |
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