Self-assembled construction of a sheet-type coordination polymer bearing cationic M2L4 cages: creation of channel-like space for removal of ClO4− and NO3− from aqueous solutions

Abstract

Treatment of CuCl₂ with a bis-benzimidazole-type ligand, p-bbiteb, afforded a new 2D coordination polymer bearing cationic Cu₂L₄ cages on the sheet framework. The regular arrangement of the cages created channel-like space for anions. The compound removed ClO₄⁻ and NO₃⁻ from aqueous solutions by exchange with Cl⁻ in the channels.