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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 4.

Figure 4.

Representative structures of CO2-inserted diamine-appended Zn2(dobpdc) frameworks as determined by single-crystal X-ray diffraction. Left: First coordination spheres for the ZnII centers in Zn2(dobpdc)(m-2-m–CO2)1.5, Zn2(dobpdc)(e-2-e)(e-2-e–CO2), and Zn2(dobpdc)(i-2)(i-2–CO2) at 195 K and the dominant conformation of Zn2(dobpdc)(e-2–CO2)1.5 at 100 K. Right: A portion of the ammonium carbamate chains along the pore axis of the material for Zn2(dobpdc)(e-2-e–CO2) and Zn2(dobpdc)(e-2–CO2)1.5. For clarity, all structures are depicted in space group P3221. Light blue, blue, red, gray, and white spheres represent Zn, N, O, C, and H atoms, respectively.