A two-dimensional photoluminescent cadmium(II) coordination polymer containing a new coordination mode of pyridine-2,3-dicarboxylate: Synthesis, structure and molecular simulations for gas storage and separation applications

作者：Semerci Fatih; Yesilel Okan Zafer^*; Soylu Mustafa Serkan; Keskin Seda; Buyukgungor Orhan

来源：Polyhedron, 2013, 50(1): 314-320.

DOI：10.1016/j.poly.2012.10.009

• Pyridine-2,3-dicarboxylate complex
• Coordination polymer
• Cadmium(II) complex
• Photoluminescence
• Crystal structure

A novel two-dimensional (2D) coordination polymer, [Cd(mu-pydc)(2-meim)](n) (1) (pydc = pyridine-2,3-dicarboxylate, 2-meim = 2-methylimidazole) was synthesized and characterized by spectral methods (FT-IR and photoluminescence), elemental analysis, thermal analysis (TG, DTG and DTA) and single crystal X-ray diffraction techniques. Complex 1 displays a 2D layer structure through the linkage of bridging carboxyl oxygen and pyridine nitrogen atoms of the pydc ligand. Each Cd(II) center exhibits a distorted octahedral coordination environment with four carboxylate oxygen atoms and two nitrogen atoms from the pydc and 2-meim ligands. In 1, the pydc ligand exhibits a new coordination mode. The distances of adjacent Cd(II) atoms are 3.679 and 7.742 angstrom. The 2D layers are further linked by C-H.. .pi and pi...pi stacking to construct a 3D supramolecular structure. In order to assess the potential of 1 in gas storage and gas separation applications, molecular simulations were performed. Furthermore, 1 exhibits blue photoluminescence in the solid state at room temperature.

• 出版日期2013-2-13