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Abstract <p>Two new Fe(III) anionic complexes with 2,1,3-benzothiadiazole-5,6-dithiolate (btdt<sup>2–</sup>) isolated as crystalline (PyH)<sub>2</sub>[Fe(btdt)<sub>2</sub>]<sub>2</sub>·2C<sub>3</sub>H<sub>6</sub>O (<b>1</b>·2C<sub>3</sub>H<sub>6</sub>O) and (NBu<sub>4</sub>)<sub>2</sub>[Fe(btdt)<sub>2</sub>]<sub>2</sub>·3THF (<b>2</b>·3THF) solvates are synthesized and characterized by single crystal X-ray diffraction. The anionic unit of these complexes consists of [Fe(btdt)<sub>2</sub>]<sup>–</sup> moieties dimerized in <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10947_2025_3051_Article_IEq1.gif" Format="GIF" Height="21" Rendition="HTML" Resolution="72" Type="Linedraw" Width="93" /> </InlineMediaObject> <EquationSource Format="TEX">\([\text{Fe}{{(\text{btdt})}_{2}}]_{2}^{2-}\)</EquationSource> </InlineEquation> bridged through coordination of one sulfur atom of each of the (btdt)<sup>2–</sup>ligands. Finally, in <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="10947_2025_3051_Article_IEq1.gif" Format="GIF" Height="21" Rendition="HTML" Resolution="72" Type="Linedraw" Width="93" /> </InlineMediaObject> <EquationSource Format="TEX">\([\text{Fe}{{(\text{btdt})}_{2}}]_{2}^{2-}\)</EquationSource> </InlineEquation>, the iron atoms are in a square pyramidal environment of sulfur atoms. The absorption spectra of acetonitrile solutions of compounds <b>1</b> and <b>2</b> demonstrate broad bands with the maxima at 250&#xa0;nm, 404&#xa0;nm, 485&#xa0;nm, and 606&#xa0;nm covering the entire visible light region.</p>

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Synthesis and Structure of Fe(III) Complexes with 2,1,3-Benzothiadiazole-5,6-Dithiolate

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • P. A. Martynenko,
  • D. A. Bashirov,
  • T. S. Sukhikh,
  • S. N. Konchenko

摘要

Abstract

Two new Fe(III) anionic complexes with 2,1,3-benzothiadiazole-5,6-dithiolate (btdt2–) isolated as crystalline (PyH)2[Fe(btdt)2]2·2C3H6O (1·2C3H6O) and (NBu4)2[Fe(btdt)2]2·3THF (2·3THF) solvates are synthesized and characterized by single crystal X-ray diffraction. The anionic unit of these complexes consists of [Fe(btdt)2]– moieties dimerized in \([\text{Fe}{{(\text{btdt})}_{2}}]_{2}^{2-}\) bridged through coordination of one sulfur atom of each of the (btdt)2–ligands. Finally, in \([\text{Fe}{{(\text{btdt})}_{2}}]_{2}^{2-}\) , the iron atoms are in a square pyramidal environment of sulfur atoms. The absorption spectra of acetonitrile solutions of compounds 1 and 2 demonstrate broad bands with the maxima at 250 nm, 404 nm, 485 nm, and 606 nm covering the entire visible light region.