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Issue 68, 2012
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Unusual room temperature CO2 uptake in a fluoro-functionalized MOF: insight from Raman spectroscopy and theoretical studies

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Abstract

We herein report an unusual CO2 adsorption behavior in a fluoro-functionalized MOF {[Zn(SiF6)(pyz)2]·2MeOH}n (1) with a 1D channel system, which is made up of pyrazine and SiF62− moieties. Surprisingly, desolvated 1 (1′) adsorbs higher amounts of CO2 at 298 K than at 195 K, which is in contrast to the usual trend. Combined Raman spectroscopic and theoretical studies reveal that slanted pyrazine rings in 1′ with an angle of 17.2° with respect to the (200) Zn(II)–Si plane at low temperature block the channel windows and thus reduce the uptake amount.

Graphical abstract: Unusual room temperature CO2 uptake in a fluoro-functionalized MOF: insight from Raman spectroscopy and theoretical studies

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Publication details

The article was received on 14 Jun 2012, accepted on 29 Jun 2012 and first published on 29 Jun 2012


Article type: Communication
DOI: 10.1039/C2CC34276F
Citation: Chem. Commun., 2012,48, 8487-8489

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    Unusual room temperature CO2 uptake in a fluoro-functionalized MOF: insight from Raman spectroscopy and theoretical studies

    P. Kanoo, S. K. Reddy, G. Kumari, R. Haldar, C. Narayana, S. Balasubramanian and T. K. Maji, Chem. Commun., 2012, 48, 8487
    DOI: 10.1039/C2CC34276F

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