Highly Dynamic and Tunable Behavior of 1D Coordination Polymers Based on the Bispidine Ligand

: Ligands L1 and L2 have been designed, synthesized, and used to build for the first time bispidine-based coordination polymers (CPs) in combination with MnII . The novel CPs have been structurally characterized by single-crystal (SC) and powder X-ray diffraction (P-XRD) techniques, showing that they are composed of 1D ribbon-like chains that adopt various arrangements depending on the trapped solvent species. These materials show highly dynamic behavior as they undergo heterogeneous solid/liquid and solid/vapor multiple solvent exchange processes, comprising crystalline-amorphous-crystalline, selective adsorption and SC-to-SC transformations, where major structural reorganization of the 1D ribbons are observed. By tuning inter-ribbon interactions through expansion of the ligand's accessible surface, the dynamic behavior can be effectively modulated.