Enhanced adsorption of small gas molecules in metal (Cu2+, Pd2+, Pt2+) complexes induced by ligand fluorination

Abstract

Fully fluorinated coordination complexes, [M(L)₂] (M = Cu²⁺, Pd²⁺, Pt²⁺ and L = bis(pentafluorobenzoyl)methanido), show two types of guest recognition events: 1 : 1 selective recognition of CO₂ and metal ion-selective adsorption of small gas molecules such as N₂, O₂, H₂, NO, and CH₄, while the corresponding non-fluorinated complexes show no guest encapsulation.