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Abstract <p>Four cobalt complexes with cucurbit[6]uril (CB[6]), [Co(H<sub>2</sub>O)<sub>6</sub>](Bdc)·CB[6]·14.5H<sub>2</sub>O (<b>I</b>), 2(H<sub>2</sub>NMe<sub>2</sub>)<sub>2</sub>[CoCl<sub>4</sub>]·CB[6]·12H<sub>2</sub>O (<b>II</b>), [{Co(H<sub>2</sub>O)<sub>4</sub>Cl}<sub>4</sub>(CB[6])]Cl<sub>4</sub>·9H<sub>2</sub>O (<b>III</b>), and [Co(H<sub>2</sub>O)<sub>6</sub>]-[Co(H<sub>2</sub>O)<sub>5</sub>(Dmf)][CoCl<sub>4</sub>]<sub>2</sub>·CB[6]·6H<sub>2</sub>O (<b>IV</b>), were prepared by evaporation of the reaction solution containing cobalt chloride and cucurbit[6]uril (CB[6]). According to X-ray diffraction data, compound <b>I</b> is formed by packing of cationic cobalt aqua complexes, terephthalate anions, and CB[6] molecules linked together by hydrogen bonds with crystallization water molecules into a supramolecular cage. The structure of compound <b>II</b> represents a packing of CB[6] molecules, dimethylammonium cations, and anionic cobalt chloro complexes. Compound <b>III</b> contains tetranuclear cationic cobalt chloro aqua complexes with CB[6], with chloride anions acting as counter-ions. The crystal structure of <b>IV</b> is a packing of cationic cobalt aqua complexes, anionic cobalt chloro complexes, and CB[6] molecules linked by hydrogen bonds with crystallization water molecules into a supramolecular cage. The resulting compounds are characterized by IR spectra and elemental analysis data.</p>

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Synthesis and Crystal Structure of Cobalt Complexes with Cucurbit[6]uril

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • I. V. Andrienko,
  • D. G. Samsonenko,
  • E. A. Kovalenko

摘要

Abstract

Four cobalt complexes with cucurbit[6]uril (CB[6]), [Co(H2O)6](Bdc)·CB[6]·14.5H2O (I), 2(H2NMe2)2[CoCl4]·CB[6]·12H2O (II), [{Co(H2O)4Cl}4(CB[6])]Cl4·9H2O (III), and [Co(H2O)6]-[Co(H2O)5(Dmf)][CoCl4]2·CB[6]·6H2O (IV), were prepared by evaporation of the reaction solution containing cobalt chloride and cucurbit[6]uril (CB[6]). According to X-ray diffraction data, compound I is formed by packing of cationic cobalt aqua complexes, terephthalate anions, and CB[6] molecules linked together by hydrogen bonds with crystallization water molecules into a supramolecular cage. The structure of compound II represents a packing of CB[6] molecules, dimethylammonium cations, and anionic cobalt chloro complexes. Compound III contains tetranuclear cationic cobalt chloro aqua complexes with CB[6], with chloride anions acting as counter-ions. The crystal structure of IV is a packing of cationic cobalt aqua complexes, anionic cobalt chloro complexes, and CB[6] molecules linked by hydrogen bonds with crystallization water molecules into a supramolecular cage. The resulting compounds are characterized by IR spectra and elemental analysis data.