A calixarene based metal organic material, calixMOM, that binds potassium cationsElectronic supplementary information (ESI) available: Crystal data (CIF); IR, TGA, PXRD data; structure figures; pore size distribution; and tables with figures showing catalysis results. CCDC 936351 and 936352. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c3cc44687e

A porous calixarene-based metal organic material, calixMOM-1, has been prepared by using a custom designed tetradentate thiacalixarene which links manganese molecular building blocks. Potassium ions were introduced into the cavity of the thiacalixarene to afford calixMOM-2. Gas sorption properties of both compounds were studied. A porous calixarene-based metal organic material, calixMOM-1, that binds to potassium ions and exhibits strong affinity towards CO 2 is reported.