Structural determination of a 1-D metal–organic framework with adsorbed oxygen molecules at 10 K: possibility of surface motion transfer of confined guest

Abstract

Single-crystal X-ray analysis at 10 K revealed adsorbed oxygen within the ultramicropores of a single crystal gas adsorbent, rhodium(II) benzoate-pyrazine. This indicates that the oxygen molecules were captured on the necks of infinite channels by the intermolecular interaction between the guest O₂ and the benzoate moieties on the inner host surface and the guest probably diffuses through the narrow necks driven by surface local motion.