Journal
POLYHEDRON
Volume 121, Issue -, Pages 252-263Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.poly.2016.10.016
Keywords
Hydrothermal reaction; 2-(Pyridine-4-yl)-(1H)-benzoimidazole; Aromatic carboxylic acid; Luminescence; Crystal structure
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Funding
- Project of Shandong Province Higher Educational Science and Technology Program [J09LB03]
- Shandong Distinguished Middle-aged Young Scientist Encouragement and Reward Foundation [BS2011CL034]
- National Undergraduate Training Program for Innovation and Entrepreneurship of Qilu University of Technology
- Program for the Scientific Research Innovation Team in Colleges and Universities of Shandong Province
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Three new metal coordination complexes, namely [Co(IPA)(4PBI)]center dot H2O (1), [Cd(IPA)(4PBI)(H2O)] (2) and [Cd(TPA)(4PBI)(H2O)1 (3) [4PBI = 2-(pyridine-4-yl)-(1H)-benzoimidazole, IPA = isophthalate and TPA = terephthalate], were obtained under hydrothermal conditions by reacting cobalt and cadmium salts with 4PBI and IPA or TPA. Complexes 1-3 were structurally characterized by X-ray single-crystal diffraction, EA, IR and PXRD. All of these complexes display low dimensional features with one-dimensional (1D) motifs. Complex 1 is a 1D tape-like structure containing bi-nuclear units, which is further extended into a 3D supramolecular architecture through intermolecular hydrogen bonds and stacking interactions. Complex 2 shows a 1D structural motif, which is further assembled into a 3D supramolecular architecture by hydrogen bonds and packing interactions. Complex 3 is also a 1D chain. Through intermolecular hydrogen bonds and pi center dot center dot center dot pi packing interactions, a 3D supramolecular network is also generated for 3. The luminescent properties of complexes 2 and 3 were investigated in the solid state at room temperature. Additionally, thermogravimetric analysis (TGA) of 1-3 has been discussed in details. (C) 2016 Elsevier Ltd. All rights reserved.
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