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. Author manuscript; available in PMC: 2021 Jun 24.
Published in final edited form as: J Am Chem Soc. 2017 Jul 19;139(30):10526–10538. doi: 10.1021/jacs.7b05858

Figure 1.

Figure 1.

(a) Representative structure of the metal–organic framework Mg2(dobpdc). Green, red, gray, and white spheres represent Mg, O, C, and H atoms, respectively. The inset shows a single open MgII site appended with a diamine molecule. (b) Depiction of cooperative CO2 insertion into a row of MgII–diamine sites to form ammonium carbamate chains along the pore axis. The threshold conditions for cooperative adsorption can be tuned by modifying the diamine structure to adjust the strength of the metal–amine bond and the ammonium carbamate ion-pairing interaction.