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Abstract <p>The reactions of chromium(III) potassium sulfate with the potassium salt of cyclobutane-1,1-dicarboxylic acid (H<sub>2</sub>Cbdc), 1,10-phenanthroline (Phen), and <i>d</i>-metal (Fe<sup>II</sup>, Ni<sup>II</sup>, Zn<sup>II</sup>) sulfate yielded ionic compounds [M<sup>II</sup>(Phen)<sub>3</sub>][Cr<sup>III</sup>(Cbdc)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>][Cr<sup>III</sup>(Cbdc)<sub>2</sub>(Phen)]·<i>n</i>H<sub>2</sub>O (<b>I</b>: M = Fe, <i>n</i> = 9.5; <b>II</b>: M = Ni, <i>n</i>&#xa0;= 10; <b>III</b>: M = Zn, <i>n</i> = 9.1). The structures of <b>I</b>–<b>III</b> are formed by isolated [M<sup>II</sup>(Phen)<sub>3</sub>]<sup>2+</sup> cations containing a <i>d</i>-metal ion and chromium(III)-containing anions of two types, [Cr<sup>III</sup>(Cbdc)<sub>2</sub>(H<sub>2</sub>O)<sub>2</sub>]<sup>–</sup> and [Cr<sup>III</sup>(Cbdc)<sub>2</sub>(Phen)]<sup>–</sup>. A similar reaction with cadmium sulfate resulted in the formation of the trinuclear molecular complex [Cd<sup>II</sup>Cr<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(_{2}^{{{\text{III}}}}\)</EquationSource> <!--CoChem2560109Bazhina-m1--> </InlineEquation>(Cbdc)<sub>4</sub>(Phen)<sub>4</sub>]·7.5H<sub>2</sub>O (<b>IV</b>), in which two heteroleptic {Cr<sup>III</sup>(Cbdc)<sub>2</sub>(Phen)} blocks are bound to {Cd(Phen)<sub>2</sub>} moiety by bridging carboxylate groups. The crystal structures of compounds <b>I</b>–<b>IV</b> were determined by single crystal X-ray diffraction (CCDC nos. 2478737 (<b>I</b>), 2478738 (<b>II</b>), 2478739 (<b>III</b>), 2478740 (<b>IV</b>)).</p>

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Synthesis and Structure of New M(II)/Cr(III) Coordination Compounds (M = Fe, Ni, Zn, Cd) with Cyclobutane-1,1-dicarboxylate Anions and 1,10-Phenanthroline

  • 期刊论文

  • 发表日期：

    2025年9月1日

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  • E. S. Bazhina,
  • A. S. Mokicheva,
  • M. A. Shmelev,
  • M. A. Kiskin,
  • I. L. Eremenko

摘要

Abstract

The reactions of chromium(III) potassium sulfate with the potassium salt of cyclobutane-1,1-dicarboxylic acid (H2Cbdc), 1,10-phenanthroline (Phen), and d-metal (FeII, NiII, ZnII) sulfate yielded ionic compounds [MII(Phen)3][CrIII(Cbdc)2(H2O)2][CrIII(Cbdc)2(Phen)]·nH2O (I: M = Fe, n = 9.5; II: M = Ni, n = 10; III: M = Zn, n = 9.1). The structures of I–III are formed by isolated [MII(Phen)3]2+ cations containing a d-metal ion and chromium(III)-containing anions of two types, [CrIII(Cbdc)2(H2O)2]– and [CrIII(Cbdc)2(Phen)]–. A similar reaction with cadmium sulfate resulted in the formation of the trinuclear molecular complex [CdIICr \(_{2}^{{{\text{III}}}}\) (Cbdc)4(Phen)4]·7.5H2O (IV), in which two heteroleptic {CrIII(Cbdc)2(Phen)} blocks are bound to {Cd(Phen)2} moiety by bridging carboxylate groups. The crystal structures of compounds I–IV were determined by single crystal X-ray diffraction (CCDC nos. 2478737 (I), 2478738 (II), 2478739 (III), 2478740 (IV)).