Synthesis and Crystal Structure of a Green Photoluminescent 1D Cobalt(II) Coordination Polymer Constructed from 2,2' Bibenzimidazole

Autor:	Xiao Li, Rong-Huan Qin, Wen-Gui Duan, Liu-Ting Yan, Xian-Ming Chen, Yan Yang
Rok vydání:	2011
Předmět:	Crystallography chemistry.chemical_compound Octahedron Chemistry Coordination polymer Hydrogen bond Supramolecular chemistry Stacking chemistry.chemical_element Imidazole General Chemistry Crystal structure Cobalt
Zdroj:	Zeitschrift für Naturforschung B. 66:889-893
ISSN:	1865-7117 0932-0776
DOI:	10.1515/znb-2011-0904
Popis:	Hydrothermal reaction of Co(NO3)2 ·6H2O with H2bibm and H4cta at 120 ◦C yielded a novel 1D Co(II) coordination polymer, [Co(H2bibm)(cta)]n · nH2O (1) [H2bibm = 2,2`-bibenzimidazole, cta = citrate], in which distorted CoN2O4 octahedra are linked by the cta ligands in a tetradentate bridging mode to construct a zigzag chain with Co...·Co distances of 7.510(1) A° . A 2D supramolecular network is formed by π-π stacking with a face-to-face distance of 3.55 °A between the imidazole rings of the 2,2`-bibenzimidazole ligands and interchain O-H· · ·O and N-H· · ·O hydrogen bond interactions. Complex 1 displays strong green fluorescence emissions at 538 nm in th+e solid state upon photoexcitation at 395 nm at room temperature.
Databáze:	OpenAIRE
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