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Abstract <p>The study addresses the complex formation reactions between iron(II) and benzimidazole (L) derivatives (L<sup>1</sup> = C<sub>13</sub>N<sub>3</sub>H<sub>11</sub>, L<sup>2</sup> = C<sub>15</sub>N<sub>3</sub>H<sub>13</sub>) in the presence of boron cluster anion salts [B<sub><i>n</i></sub>H<sub><i>n</i></sub>]<sup>2–</sup> (<i>n</i> = 10, 12). The prepared complexes [FeL<sub>3</sub>][B<sub><i>n</i></sub>H<sub><i>n</i></sub>] were characterized by elemental analysis and IR spectroscopy. The structure of [<InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11173_2025_1751_Article_IEq1.gif" Format="GIF" Height="21" Rendition="HTML" Resolution="72" Type="Linedraw" Width="34" /> </InlineMediaObject> <EquationSource Format="TEX">\({\text{FeL}}_{{\text{3}}}^{{\text{1}}}\)</EquationSource> <!--CoChem2560048Avdeeva-m1--> </InlineEquation>][B<sub>10</sub>H<sub>10</sub>] was established by single crystal X-ray diffraction (CCDC no. 2432134). The distorted octahedral environment of the Fe atom is formed by the imidazole and pyridine nitrogen atoms of the three ligand molecules. In the crystal, the <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11173_2025_1751_Article_IEq2.gif" Format="GIF" Height="26" Rendition="HTML" Resolution="72" Type="Linedraw" Width="62" /> </InlineMediaObject> <EquationSource Format="TEX">\({{{\text{[FeL}}_{{\text{3}}}^{{\text{1}}}{\text{]}}}^{{{\text{2 + }}}}}\)</EquationSource> <!--CoChem2560048Avdeeva-m2--> </InlineEquation> complex has a meridional configuration. The Fe–N bond lengths for the imidazole nitrogen atoms are in the 1.954(8)–1.980(6) Å range, while for the pyridine nitrogen atoms, this range is 1.977(7)–2.011(8) Å.</p>

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Synthesis and Structure of Iron(II) Complexes with 1-Methyl-2-pyridin-2-yl-1H- and 1-Methyl-2-phenyliminomethyl-1H-benzimidazoles and Boron Cluster Anions [BnHn]2– (n = 10, 12)

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • V. V. Avdeeva,
  • A. S. Kubasov,
  • S. E. Nikiforova,
  • O. N. Belousova,
  • E. A. Malinina,
  • N. T. Kuznetsov

摘要

Abstract

The study addresses the complex formation reactions between iron(II) and benzimidazole (L) derivatives (L1 = C13N3H11, L2 = C15N3H13) in the presence of boron cluster anion salts [BnHn]2– (n = 10, 12). The prepared complexes [FeL3][BnHn] were characterized by elemental analysis and IR spectroscopy. The structure of [ \({\text{FeL}}_{{\text{3}}}^{{\text{1}}}\) ][B10H10] was established by single crystal X-ray diffraction (CCDC no. 2432134). The distorted octahedral environment of the Fe atom is formed by the imidazole and pyridine nitrogen atoms of the three ligand molecules. In the crystal, the \({{{\text{[FeL}}_{{\text{3}}}^{{\text{1}}}{\text{]}}}^{{{\text{2 + }}}}}\) complex has a meridional configuration. The Fe–N bond lengths for the imidazole nitrogen atoms are in the 1.954(8)–1.980(6) Å range, while for the pyridine nitrogen atoms, this range is 1.977(7)–2.011(8) Å.