Abstract
The three-dimensional metal–organic framework compound prepared from Cs+ and the organic linker 4,5-dicyano-1,2-phenylene)bis(phosphonic acid is based on an irregular CsO8N2 coordination center comprising a single monodentate hydronium O-atom donor, together with multiple bridging links to the two phosphonate O-atom donors and to the two nitrile N-atom donors.
