Spin-Crossover Modification through Selective CO2 Sorption

We present a spin-crossover FeII coordination polymer with no permanent channels that selectively sorbs CO2 over N2. The one-dimensional chains display internal voids of ∼9 Å diameter, each being capable to accept one molecule of CO2 at 1 bar and 273 K. X-ray diffraction provides direct structural e...

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Published inJournal of the American Chemical Society Vol. 135; no. 43; pp. 15986 - 15989
Main Authors Coronado, Eugenio, Giménez-Marqués, Mónica, Mínguez Espallargas, Guillermo, Rey, Fernando, Vitórica-Yrezábal, Iñigo J
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 30.10.2013
Subjects
carbon dioxide
coordination polymers
nitrogen
sorption
X-ray diffraction
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ISSN0002-7863
1520-5126
1520-5126
DOI10.1021/ja407135k

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Summary:We present a spin-crossover FeII coordination polymer with no permanent channels that selectively sorbs CO2 over N2. The one-dimensional chains display internal voids of ∼9 Å diameter, each being capable to accept one molecule of CO2 at 1 bar and 273 K. X-ray diffraction provides direct structural evidence of the location of the gas molecules and reveals the formation of OCO(δ–)···π interactions. This physisorption modifies the spin transition, producing a 9 K increase in T 1/2.
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ISSN:0002-7863
1520-5126
1520-5126
DOI:10.1021/ja407135k