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Synthesis and Characterization of Three New Zipper-like Lanthanide [Ln = TmIII, NdIII, CeIII] Coordination Polymers Containing 1,3-Benzenedicarboxylate and 2-Phenyl-1H-1,3,7,8-tetraazacyclopenta[l]phenanthrene Ligands

Authors

  • Xiang-Cheng Wang,

    1. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
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  • Chun-Bo Liu,

    1. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
    2. Key Laboratory of Preparation and, Applications of Environmental Friendly Materials, Chinese Ministry of Education, Siping 136000, P. R. China
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  • Jing Chen,

    1. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
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  • Xiu-Ying Li,

    1. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
    2. Key Laboratory of Preparation and, Applications of Environmental Friendly Materials, Chinese Ministry of Education, Siping 136000, P. R. China
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  • Prof. Dr. Guang-Bo Che,

    1. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
    2. Key Laboratory of Preparation and, Applications of Environmental Friendly Materials, Chinese Ministry of Education, Siping 136000, P. R. China
    3. College of Environmental Engineering, Jilin Normal University, Siping 136000, P. R. China
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  • Prof. Dr. Yong-Sheng Yan

    Corresponding author
    1. School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
    • School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, P. R. China
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  • Supporting information for this article is available on the WWW under http://dx.doi.org/10.1002/zaac.201000386 or from the author.

Abstract

Reaction of the ligands 2-phenyl-1H-1,3,7,8-tetraazacyclopenta[l]phenanthrene (PTCP) and benzene-1,3-dicarboxylic acid (m-H2BDC) with Ln2O3 under hydrothermal conditions lead to three isomorphous coordination polymers [Ln2(PTCP)2(m-BDC)3·H2O]n (Ln = Tm, 1; Nd, 2; Ce, 3). The coordination polymers crystallize in monoclinic, space group P21/m with a = 9.8340(2), b = 17.9140(4), c = 15.6050(3) Å, β = 100.51(3)° for 1, with a = 9.8423(3), b = 18.3562(4), c = 15.6209(3) Å, β = 102.138(3)° for 2, and with a = 9.8620(2), b = 18.4960(4), c = 15.6530(3) Å, β = 102.42(3)° for 3, respectively. The metal ions (Ln3+) are located in an octacoordinated environment and the dinuclear [Ln2O12N4] units act as octahedral secondary building units (SBU), which are bridged in two coordination modes by six m-BDC ligands to form a three-strand-like chain. These chains are decorated by PTCP ligands and form unique three zipper-like structures, which are further assembled into three-dimensional supramolecular nets by π···π stacking interactions. Additionally, hydrogen bonds are observed in the structures. Furthermore, compounds 13 were studied by IR spectrocopy and thermogravimetric analyses.

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