[Co(H2O)6]2+ and H3O+ encapsulated in a unique 3D anionic Co(ii) framework with hydrophilic hexagonal and circular channels†
Abstract
A new metal–organic framework, [Co(H2O)6·(H3O)]·3[Co2(L)(H2O)2]·0.5H2O (1), has been constructed from Co2 clusters and a biphenyl-pentacarboxylate ligand with open hydrophilic channels. Uniquely, [Co(H2O)6]2+ and H3O+ as guest cations coexist in the channels. The magnetic study indicates that the title compound shows a significantly antiferromagnetic interaction.