Fig. 1. (a) The framework and pore structure of [M3(vtz)6] (black dashed lines: linkers of the dia topology, yellow sphere: cavity of the pore system, green cylinders: channels connecting adjacent cavities, orange spheres: pore-surface pockets, and light green cylinders: pocket entrances). (b)–(d) Structures of the pore-surface pockets of Zn, Mn and Cd, respectively, in a static point of view (entrances are highlighted by light-green spheres with aperture diameters in the unit of Å).
