Guest-driven structural flexibility of 2D coordination polymers: Synthesis, structural characterizations, and gas sorption properties

We report the synthesis and single-crystal structures of two 2D coordination polymers, {[(NiLallyl)2(BuTC)]∙2DEF∙2H2O} (1) and {[(NiLallyl)2(BuTC)]∙3H2O} (2) (H4BuTC = 1,2,3,4-butanetetracarboxylic acid, [NiLallyl]2 + = [Ni(C14H30N6)]) which are self-assembled in two different kinds of solvent systems, and their interesting structural flexibility and the CO2 sorption behavior depending on guest molecules.