Abstract
A new complex, [Y2(pda) (C2O4)0.5(H2O)3.5](subscript ∞) (1) (pda=pyridine-2,4-dicarboxylate), is hydrothermal synthesized from the reaction of Y(NO3)3•6H2O, pdaH2, and 4,4'-bipyridine. Compound 1 is fully characterized by FT-infrared and single crystal X-ray diffraction. X-ray structure analyses show that both polymers contain bridging oxalate (C2O4^(-2)) ligands, which might have been formed by the reductive coupling of CO2 molecules released from the pda ligands through the C-C bond cleavage. The 2-D coordination polymers were assembled into 3-D networks via O-H…O hydrogen bond and π-π stacking interactions.
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