Extended Data Fig. 2: Structures of MOF-404 and MOF-405.

Single crystal structures of MOF-404 (a) and MOF-405 (c), and their corresponding linkers 1D-L1 (b) and 1D-L2 (d). B₃O₃ and pyridyl rings are colored pink. Blue polyhedra represent Zr. Grey, red, and pink spheres represent C/N, O, and B atoms, respectively.