A photoluminescent dinuclear silver(I) complex exhibits C H···Ag close interactions and a new coordination mode of the pyridine-2,3-dicarboxylate (original) (raw)

2011, Inorganic Chemistry Communications

In this study, a novel dinuclear Ag(I)-pyridine-2,3-dicarboxylate complex with 1,3-diaminopropane ligand (pda), [Ag 2 (μ-2,3-pydc) 2 (Hpda) 2 ]⋅2H 2 O (H 2 2,3-pydc = pyridine-2,3-dicarboxylic acid), has been synthesized. The molecular structure of complex has been determined by the single crystal X-ray diffraction. The complex has been observed to crystallize in the triclinic space group P-1. The Ag(I) ion exhibits a distorted trigonal pyramidal geometry by two 2,3-pydc and one protonated monodentate Hpda ligands. The 2,3-pydc ligand acts as a tridentate bridging ligand with a new coordination mode between two Ag(I) centers through the pyridine N and carboxyl μ-O atoms, forming a 4-membered parallelogram Ag 2 O 2 ring. The most striking feature is that the structure contains both intra-and inter-molecular C\H···Ag hydrogen bonding interactions to form infinite 1D chains containing R 2 2 (8) rings.

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