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BY-NC-ND 3.0 license Open Access Published by De Gruyter June 2, 2014

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

  • Yan Yang EMAIL logo , Liu-Ting Yan , Xiao Li , Xian-Ming Chen , Rong-Huan Qin and Wen-Gui Duan

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.

Graphical Abstract

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

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

Received: 2011-6-22
Published Online: 2014-6-2
Published in Print: 2011-9-1

© 1946 – 2014: Verlag der Zeitschrift für Naturforschung

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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