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Issue 45, 2011
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Increasing nuclearity of secondary building units in porous cobalt(ii) metal–organic frameworks: Variation in structure and H2 adsorption

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Abstract

Reaction of Co(NO3)2·6H2O with H2L [H2L = pyridine-4-(phenyl-3′,5′-dicarboxylic acid)] under different reaction conditions gives three closely-related metal–organic framework polymers, {[Co2(L)2(DMF)]·n(solv)} (1), {[Co(L)]·2DMF} (2) and {[Co3(L)3(DMF)0.5(H2O)1.5n(solv)} (3). Variation in reaction conditions thus has a decisive impact on the materials isolated, producing frameworks based upon either binuclear (1, 2) or trinuclear (3) cobalt cluster nodes. Analysis of their crystal structures shows that all three contain considerable solvent-accessible volumes, an indication of porosity that is confirmed for desolvated 1 and 3, which can store up to 2.75 and 2.33 wt% of H2 at 78 K and 20 bar, respectively.

Graphical abstract: Increasing nuclearity of secondary building units in porous cobalt(ii) metal–organic frameworks: Variation in structure and H2 adsorption

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Supplementary files

Article information


Submitted
12 May 2011
Accepted
07 Sep 2011
First published
25 Oct 2011

Dalton Trans., 2011,40, 12342-12349
Article type
Paper

Increasing nuclearity of secondary building units in porous cobalt(II) metal–organic frameworks: Variation in structure and H2 adsorption

J. Jia, H. S. Athwal, A. J. Blake, N. R. Champness, P. Hubberstey and M. Schröder, Dalton Trans., 2011, 40, 12342
DOI: 10.1039/C1DT10901D

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