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A robust viologen and Mn-based porous coordination polymer with two types of Lewis acid sites providing high affinity for H 2 O, CO 2 and NH 3

2017; Royal Society of Chemistry; Volume: 46; Issue: 45 Linguagem: Inglês

10.1039/c7dt03541a

1477-9234

Antonin Leblanc, Nicolas Mercier, Magali Allain, Marie‐Claire Dul, Guy Weber, Nicolas Geoffroy, Jean‐Pierre Bellat, Igor Bezverkhyy,

Supramolecular Chemistry and Complexes

A novel porous coordination polymer [Mn(pc3)(H2O)2]·xH2O (3 < x < 4) is synthesized in water at pH = 7 using the anionic viologen-carboxylate ligand 4,4'-bipyridinium,1,1'-bis-(2,4-dicarboxyphenyl) (pc32-). Dehydration of the material results in the formation of open pores containing two types of accessible Lewis acid sites: exposed Mn2+ cations and N+ atoms of viologen units. Due to this property the PCP shows high affinity and capacity in the adsorption of H2O, CO2 and NH3. Despite the presence of strong adsorption sites this material is stable in liquid water and in gaseous NH3.