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Abstract <p>The reaction of cobalt(II) trimethyl acetate (pivalate) [Co(Рiv)<sub>2</sub>]<sub><i>n</i></sub> (HРiv = HO<sub>2</sub>CCMe<sub>3</sub>) with 1,4-diaminobutane (Dab) in powder XRD acetonitrile affords 2D coordination polymer [Co(Piv)<sub>2</sub>(Dab)<sub>2</sub>]<sub><i>n</i></sub> (<b>I</b>) with a coproduct impurity, but the addition of one equivalent of 2,2'-bipyridine to the reaction mixture makes it possible to isolate a single-phase sample of compound <b>I</b> (according to the powder XRD X-ray diffraction (XRD) data) in a yield of 78%. The crystal structure of compound <b>I</b> is determined by XRD (CIF file CCDC no. 2404406): the cobalt(II) atoms in the distorted octahedral environment (CoN<sub>4</sub>O<sub>2</sub>) of two monodentate carboxylate groups and four bridging Dab molecules form a layered coordination polymer with the honeycomb topology <b>hcb</b>. The thermal behavior of compound <b>I</b> is studied by simultaneous thermal analysis: the thermal decomposition of compound <b>I</b> leads to the formation of organic salt (H<sub>2</sub>Dab)(Piv)<sub>2</sub>, cobalt(II) pivalate, and octahedral complex [Co<sub>8</sub>O<sub>2</sub>(Piv)<sub>12</sub>]. The products are identified by powder XRD and NMR spectroscopy.</p>

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New 2D Coordination Polymer of Cobalt(II) Pivalate with 1,4-Diaminobutane: Synthesis and Thermal Properties

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • V. A. Bushuev,
  • D. S. Yambulatov,
  • N. V. Gogoleva,
  • F. M. Dolgushin,
  • I. V. Skabitsky,
  • S. S. Shapovalov,
  • S. A. Nikolaevskii,
  • M. A. Kiskin,
  • I. L. Eremenko

摘要

Abstract

The reaction of cobalt(II) trimethyl acetate (pivalate) [Co(Рiv)2]n (HРiv = HO2CCMe3) with 1,4-diaminobutane (Dab) in powder XRD acetonitrile affords 2D coordination polymer [Co(Piv)2(Dab)2]n (I) with a coproduct impurity, but the addition of one equivalent of 2,2'-bipyridine to the reaction mixture makes it possible to isolate a single-phase sample of compound I (according to the powder XRD X-ray diffraction (XRD) data) in a yield of 78%. The crystal structure of compound I is determined by XRD (CIF file CCDC no. 2404406): the cobalt(II) atoms in the distorted octahedral environment (CoN4O2) of two monodentate carboxylate groups and four bridging Dab molecules form a layered coordination polymer with the honeycomb topology hcb. The thermal behavior of compound I is studied by simultaneous thermal analysis: the thermal decomposition of compound I leads to the formation of organic salt (H2Dab)(Piv)2, cobalt(II) pivalate, and octahedral complex [Co8O2(Piv)12]. The products are identified by powder XRD and NMR spectroscopy.