Guest controlled coordination framework: syntheses, crystal structures and thermal properties of two three-dimensional structures of [Ce2(adipate)3(OH2)4]·6H2O and [Ce2(adipate)3(OH2)4]·4H2O·(adipic acid)

Syntheses, crystal structures and thermal properties of two three-dimensional structures of [Ce2(adipate)3(OH2)4]·6H2O (1) and [Ce2(adipate)3(OH2)4]·4H2O·(adipic acid) (2) were reported. Single-crystal structures show that the central cerium(III) atom in 1 is ennea-coordinated by two bidentate adipate ligands, three monodentate adipate ligands and two water molecules; while the central cerium(III) atom in 2 is 10-coordinated by three bidentate adipate ligands, two monodentate adipate ligands and two coordinated water molecules. The difference between 1 and 2 was discussed based on the crystal structures, which shows that guest molecule can adjust pore-size of coordination polymers.