Picking up 30 CO2 Molecules by a Porous Metal Oxide Capsule Based on the Same Number of Receptors

30 receptors in waiting position: In the porous (pentagon)(12)(linker)(30)-type molybdenum oxide capsule (see picture), the 30 positively charged linkers (five unsaturated shown for illustration in green, the others contain CO(3)(2-) ligands) can act as receptors for neutral and negatively charged ligands. Bubbling CO(2) into the solution containing the acetate-type capsules leads to the upload of CO(2) based on 30 coordinated CO(3)(2-) ligands.