• Title/Summary/Keyword: coordination polymer

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2D Coordination Polymer Derived Co3O4 Nanocrystals as High Performance Anode Material of Lithium-Ion Batteries

  • Wen, Hao;Shi, Changdong;Gao, Yuanrui;Rong, Hongren;Sha, Yanyong;Liu, Hongjiang;Liu, Qi
    • Nano
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    • v.13 no.12
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    • pp.1850139.1-1850139.10
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    • 2018
  • $Co_3O_4$ nanocrystals have been synthesized via an ordinary one-step calcination of a cobalt-based 2D coordination polymer [Co(tfbdc)(4,4'-bpy)$(H_2O)_2$]. As an anode material for lithium-ion batteries, the obtained $Co_3O_4$ nanocrystals exhibit high reversible capacity, excellent cyclic stability and better rate capability. The reversible capacity of the $Co_3O_4$ nanocrystals maintains $713mA\;h\;g^{-1}$ after 50 cycles at a current density of $50mA\;g^{-1}$. Our results confirm that searching for metal oxides nanomaterials used as anode materials of lithium ion batteries via the calcinations of 2D coordination polymer is a new route.

Coordination Polymers Consisting of Unusual Motifs. Synthesis and Properties of Silver(I) and Copper(II) Complexes of Triethanolaminetriisonicotinate

  • Noh, Tae-Hwan;Lee, Jung-Woon;Lee, Young-A;Lee, Ji-Eun;Lee, Shim-Sung;Jung, Ok-Sang
    • Bulletin of the Korean Chemical Society
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    • v.29 no.3
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    • pp.562-566
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    • 2008
  • Reaction of AgNO3 with triethanolaminetriisonicotinate (L) produces 1 D coordination polymer of [Ag3(L)2](NO3)3 and the same treatment of Cu(NO3)2 with L gives 1D coordination polymer of [Cu(L)2](NO3)2. The nonrigid triethanolaminetriisonicotinate acts as a m 3-bridged tridentate for [Ag3(L)2](NO3)3 and a m 2-bridged bidentate for [Cu(L)2](NO3)2 to produce unusual motifs. The NO3- anions can be smoothly exchanged by PF6- anions in an aqueous suspension without destruction of the skeletal structure.

1D-Coordination Polymer Formed by Structural Conversion of an Oxazolidine Ligand in Reaction with the Copper(II) Halides

  • Mardani, Zahra;Golsanamlou, Vali;Jabbarzadeh, Zahra;Moeini, Keyvan;Carpenter-Warren, Cameron;Slawin, Alexandra M.Z.;Woollins, J. Derek
    • Journal of the Korean Chemical Society
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    • v.62 no.5
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    • pp.372-376
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    • 2018
  • A 1D-coordination polymer of $1D-\{Cu({\mu}-picolinato)_2\}$ $\{Hakimi,\;2012\;\sharp73\}_n$ (1), was prepared by the reactions between 2-(2-(pyridin-2-yl)oxazolidin-3-yl)ethanol (AEPC) ligand and $CuCl_2$ or $CuBr_2$. The product was characterized by elemental analysis, UV-Vis, FT-IR spectroscopy and single-crystal X-ray diffraction. The X-ray analysis results revealed that the AEPC ligand, after reactions with the copper(II) chloride or bromide, gives the same product - $1D-\{Cu({\mu}-picolinato)_2\}_n$ (1). The coordination modes for various picolinate-based ligands were extracted from the Cambridge Structural Database (CSD). In the crystal structure of 1, the copper atom has a $CuN_2O_4$ environment and octahedral geometry, which is distorted by elongation of the axial bond lengths due to the Jahn-Teller effect.