Guest encapsulations in non-porous crystals of fully fluorinated dinuclear metal complexes with the M2O2 core (M = Fe3+, Co2+, Ni2+)

Abstract

Two different coordination types of fully fluorinated dinuclear metal complexes, [Fe₂L₄(OMe)₂] and [M₂L₄(OH₂)₂] (M = Co²⁺, Ni²⁺ and HL = bis(pentafluorobenzoyl)methane), were obtained. All of the complexes form non-porous crystals, which act as hosts for the adsorption of various benzene derivatives, e.g., benzene, toluene, p-xylene, anisole, and small gas molecules, e.g., CO₂, O₂, and NO. The complex of iron selectively adsorbs NO in high amounts and the complex of cobalt is found to store adsorbed O₂.