A novel microporous hydrogen-bonding framework constructed with tetrathiafulvalene tetracarboxylate ligand: Synthesis, structure and magnetic properties

A novel microporous complex [Co2(μ2-OH2)2(H2O)8][H2(TC-TTF)]2 · 2H2O [H4(TC-TTF) = tetra(carboxyl)tetrathiafulvalene] was self-assembled from H4(TC-TTF) and CoCl2 · 6H2O. The complex forms a 3D supramolecular network through hydrogen-bonding and S···S interactions and shows an 1D microporous open channel along the a axis (3.5 × 4.7 Å). Variable-temperature magnetic susceptibility measurement at 1.8–300 K reveals weak ferromagnetic coupling between CoII ions.