En route to coordination chemistry under confined conditions in a porous capsule: Pr3+ with different coordination shells

Abstract

The highly charged nanocontainer capsule of the type {pentagon}₁₂{linker}₃₀ ≡ {(Mo)Mo₅O₂₁(H₂O)₆}₁₂{Mo₂O₄ (SO₄)}₃₀ with 20 nanosized pores and channels allows the entrance of cations like Pr³⁺: the latter are positioned at two different sites and have two different coordination shells, corresponding to a coordination chemistry under confined conditions; a fascinating aspect is that capsule encapsulated water shells fixed by hydrogen bonds act formally as polydentate ligands.