Crystal Structure of Coordination Cobalt(ii) and Zinc(ii) Polymers With 1,4-DIAZABICYCLO[2.2.2]OCTANE N,n′-Dioxide

Flexible Co(II)-and Ni(II)-Based Cationic 2D Metal–Organic Frameworks Based on a Charge-Neutral (O,O)-Donor Bridge

“…Expanding the family of alicyclic N,N -dioxide-based MOFs towards magnetic and catalytically active transition metal ions, such as Co(II) and Ni(II), could result in new types of functional and dynamic materials. So far, only two cobalt- [46] and no nickel-based odabco structures have been reported, to the best of our knowledge. Herein, we report the synthesis, crystal structures, and characterization of two new metal-organic frameworks with the formulae [M(DMF) 2 (odabco) 2 ](ClO 4 ) 2 •dioxane, where M 2+ = Co 2+ (1) and Ni 2+ (2), DMF = N,N-dimethylformamide.…”

“…1,4-Diazabicyclo[2.2.2]octane N,N -dioxide (odabco) is easily synthesized from the corresponding tertiary amine dabco [42]. Previous studies have revealed that odabco does not suffer from steric hindrance [43], being able to hexa-coordinate different transition metal ions [44][45][46][47] in spite of its bulky alicyclic core. Further, the odabco alicyclic bridge possesses a very high degree of flexibility due to its several inversion, rotation and torsion modes, resulting in very high structural diversity [45,48,49], possible breathing, and ferroelectricity [50][51][52] in the relevant structures.…”