Crystal Structure, Thermal Stability and Luminescence of Coordination Polymer [Cd(BBP)(p-PDOA)]n

✍ Scribed by Yan Yang; Ming-Hua Zeng; Shu-Hua Zhang; Hong Liang

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 97 KB
• Volume: 25
• Category: Article
• ISSN: 0256-7660
• DOI: 10.1002/cjoc.200790209

✦ Synopsis

Hydrothermal reaction of Cd(NO 3 ) 2 •4H 2 O with bbp and p-PDOAH 2 at 140 ℃ yielded a novel 1D cadmium(II) coordination polymer, [Cd(bbp)(p-PDOA)] n (bbp＝2,6-bis(benzimidazol-2-yl)pyridine, p-PDOA＝p-phenylenedioxydiacetate dianion), in which CdN 3 O 4 pentagonal bipyramids were linked by p-PDOA ligands in a bis-bidentate mode to construct a zigzag chain with the adjacent Cd…Cd distance of 1.14(1) nm. There exists a 2D supramolecular network linked by π-π stacking with a face-to-face distance of 0.35(1) nm between the 2,6-bis(benzimidazol-2-yl) pyridine ligands and hydrogen-bonding interactions (0.27(4) nm). A 3D supramolecular network was further constructed by these non-covalent interactions between the zippers. The TG/DTG showed that its chain skeleton was thermally stable up to 389 ℃ and the blue fluorescent emission of the complex was determined at 428 nm in a solid state with its long decay lifetime of 7.24 ns.