Abstract
In this paper, we report two coordination polymers, [Cd(Medpq)(SO4) (H2O)2]n (1) and {[Mn(Medpq)(QUI)H2O] ⋅ H2O} n (2) (H2QUI = 2,3-pyridinedicarboxylic acid, Medpq = 2-methyldipyrido[3,2-f:2,3-h]quinoxaline) by hydrothermal processing and structural characterization by elemental analysis, thermogravimetric analysis and single-crystal X-ray diffraction. The coordination polymers 1 and 2 have 1D chains formed via coordination bonds, and unique two-dimensional supramolecular structures are further formed due to π- π stacking interactions. The results reveal that the coordination preferences of metal ions play a critical role in the framework construction of the two coordination polymers. Meanwhile, natural bond orbital (NBO) analysis was performed by the PBE0/LANL2DZ method in Gaussian 09 program. The calculated results show the obvious covalent interaction between the coordinated atoms and metal ions.
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CCDC 1442203 and1442204 contain the supplementary crystallographic data for the molecules reported in this paper. These data can be obtained free of charge from the Cambridge Crystallographic Data Centre via www.ccdc.cam.ac.uk/data_request/cif, fax: + 44 1223 336 033 or by e-mail: deposit@ccdc.cam.ac.uk. Selected bond lengths and angles, molecular orbitals figures, CIF and checkCIF files are available as electronic Supplementary Information for this paper at www.ias.ac.in/chemsci.
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HUANG, YJ., PAN, YR., DU, G. et al. Extended structures of two coordination polymers based on 1,10-phenanthroline derivatives: Preparation, structural characterization and properties. J Chem Sci 128, 459–465 (2016). https://doi.org/10.1007/s12039-016-1035-y
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DOI: https://doi.org/10.1007/s12039-016-1035-y