Toward the Design of Porous Organic Solids: Modular Honeycomb Grids Sustained by Anions of Trimesic Acid

Abstract

The trigonal symmetry of trimesic acid (1,3,5-benzenetricarboxylic acid) [H3TMA] is exploited in the generation of honeycomb grid solids that eschew interpenetration. The structures of [N,N-dicyclohexylammonium]3[TMA]· xMeOH and [N,N-dimethylammonium]12[H3TMA] · [H2TMA−]3 · [HTMA2−]3·[TMA3−] reveal, relative to H3TMA, expanded and contracted honeycomb grids having internal cavities with effective diameters of 12.7 and 10.4 Å, respectively.