Reversible Encapsulation of Xenon and CH2Cl2 in a Solid-State Molecular Organometallic Framework (Guest@SMOM)

Reversible encapsulation of CH2Cl2 or Xe in a non-porous solid-state molecular organometallic framework of [Rh(Cy2PCH2PCy2)(NBD)][BAr4F] occurs in single-crystal to single-crystal transformations. These processes are probed by solid-state NMR spectroscopy, including Xe-129 SSNMR. Non-covalent interactions with the -CF3 groups, and hydrophobic channels formed, of [BAr4F](-) anions are shown to be important, and thus have similarity to the transport of substrates and products to and from the active site in metalloenzymes.