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. 2020 Aug 10;142(36):15386–15395. doi: 10.1021/jacs.0c06329

Figure 2.

Figure 2

(a) PCN-226 is formed by the linkage of infinite zigzag zirconium chains and TCPP. The infinite zigzag zirconium chains have the composition [ZrO(−COO)2]∞, with Zr atoms being hepta-coordinated. (b) The connection of PCN-226 showing a new topology, ztt, with Schlafli symbol {4·82}{42·6·82·10} for the net. (c) The crystal structure of PCN-226 viewed along the b-axis showing the pore opening 7.2 Å × 4.8 Å and (d) the crystal structure viewed along the c-axis showing the 5.4 Å × 4.2 Å opening pores. Cyan capped octahedral, Zr; red spheres, O; black spheres, C, blue spheres, N; orange spheres, Cu.