Supramolecular Isomerism in Coordination Polymers: Conformational Freedom of Ligands in [Co(NO3)2(1,2-bis(4-pyridyl)ethane)1.5]n


  • This work was supported the NSERC (Canada) and the Environmental Science and Technology Alliance of Canada. We thank Prof. Simon G. Bott for helpful discussions on the term supramolecular isomerism


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Bilayers or open-framework ladder structure? Which supramolecular isomer is formed from Co(NO3)2 and the nonrigid spacer 1,2-bis(2-pyridyl)ethane depends on the crystallization conditions. The open-framework coordination polymer contains large, square cavities of 10 × 10 Å. A section of the bilayer motif is shown on the right.