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

IF 1.1 3区化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR

Russian Journal of Coordination Chemistry Pub Date : 2025-05-26 DOI:10.1134/S1070328424601456

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

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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.

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新型1,4-二氨基丁烷钴（II）私人酸酯配位聚合物的合成及热性能

在粉末XRD乙腈中，钴（II）三甲基乙酸酯（戊酸酯）[Co（Рiv）2]n （HРiv = HO2CCMe3）与1,4-二氨基丁烷（Dab）反应得到2D配位聚合物[Co(Piv)2(Dab)2]n (I)与副产物杂质，但在反应混合物中加入一个当量的2,2'-联吡啶，可以分离出化合物I的单相样品（根据粉末XRD x射线衍射（XRD）数据），收率为78%。化合物I的晶体结构由XRD （CIF文件CCDC no.）测定。2404406)：两个单齿羧酸基团和四个桥接Dab分子在扭曲的八面体环境（CoN4O2）中的钴（II）原子形成具有蜂窝状拓扑结构hcb的层状配位聚合物。通过同步热分析研究了化合物I的热行为：化合物I的热分解生成有机盐（H2Dab）（Piv）2、钴（II）私酸盐和八面体配合物[Co8O2(Piv)12]。通过粉末XRD和NMR对产物进行了鉴定。

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来源期刊

Russian Journal of Coordination Chemistry 化学-无机化学与核化学

CiteScore

2.40

自引率

15.80%

发文量

审稿时长

7.2 months

期刊介绍： Russian Journal of Coordination Chemistry is a journal that publishes reviews, original papers, and short communications on all aspects of theoretical and experimental coordination chemistry. Modern coordination chemistry is an interdisciplinary science that makes a bridge between inorganic, organic, physical, analytical, and biological chemistry.