An unusual self-catenated cationic metal-organic framework for the selective adsorption of anionic dyes

Abstract Based on a tripodal N, O-donor ligand, an unusual self-catenated cationic metal-organic framework [Zn 2 (cdc)(tmpo) 2 ]·2NO 3 ·5DMF (H 2 cdc = 1,4‑cyclohexanedicarboxylic acid and tmpo = tris[4‑(2′‑methylimidazol‑yl)phenyl]phosphine oxide) has been synthesized and structurally characterized. This compound exhibits selective adsorption of anionic dyes.