Ligand-tuned metal coordination polymers constructed by the linear Cd3(COO)6/8 clusters: Preparations, structures, topologies and gas adsorptive properties

• Five metal coordination polymers (MCPs) were synthesized.
• The organic ligands tuned the structures and topologies of the five MCPs.
• Five MCPs feature three different type nets: 4×4 sheet, bcg or bcu.

Reactions of Cd(NO3)2 and the different aromatic ditopic acids, five metal coordination polymers (MCPs) have been synthesized and characterized. The structural studies show the MCPs constructed from the linear trinuclear Cd3(COO)6/8 secondary building units (SBUs). Owing to the different connect fashions of the SBUs, five MCPs feature non-porous or microporous framework, as well as three different type topologies respectively: 4 × 4 sheet, bcg or bcu net.

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