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<p>The synthesis, X-ray crystallographic, and spectroscopic studies of 2-benzoylthiophene ketone thiophene-2-carboxylic acid hydrazone (<i>bttcah</i>) is reported. The compound crystallized by slow evaporation from ethanol in a monoclinic space group P 2<sub>1</sub>/c with a = 9.2783(3) Å, b = 16.4236(6) Å, c = 9.8605(3) Å, β = 106.0017(12)° and <i>V</i> = 1444.35(8) Å<sup>3</sup> with <i>Z</i> = 4. The thienyl rings of <i>bttcah</i> are pseudo-planar with the hydrazone backbone, however, the phenyl ring is out of the plane of the hydrazone backbone by 108.96<sup>o</sup>. The packing of the molecules showed classical intermolecular hydrogen bonding between NH and C=O groups. In the <sup>1</sup>H NMR the NH was observed at 9.96 ppm, and in the FTIR spectrum, the ν<sub>NH</sub> and the ν<sub>C=O</sub> were observed at 3167&#xa0;cm<sup>–1</sup> and 1621&#xa0;cm<sup>–1</sup>, respectively.</p> Graphical Abstract <p></p>

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Synthesis, X-Ray Crystallographic and Spectroscopic Studies of 2-Benzoylthiopheneketone Thiophene-2-Carboxylic Acid Hydrazone (Bttcah)

  • 期刊论文

  • 发表日期：

    2026年3月13日

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  • Kirk Wilson,
  • Kerrie-Ann Wilson,
  • Mark A. W. Lawrence,
  • Colin D. McMillen,
  • Elizabeth Tonsel-White,
  • Alvin A. Holder

摘要

The synthesis, X-ray crystallographic, and spectroscopic studies of 2-benzoylthiophene ketone thiophene-2-carboxylic acid hydrazone (bttcah) is reported. The compound crystallized by slow evaporation from ethanol in a monoclinic space group P 21/c with a = 9.2783(3) Å, b = 16.4236(6) Å, c = 9.8605(3) Å, β = 106.0017(12)° and V = 1444.35(8) Å3 with Z = 4. The thienyl rings of bttcah are pseudo-planar with the hydrazone backbone, however, the phenyl ring is out of the plane of the hydrazone backbone by 108.96o. The packing of the molecules showed classical intermolecular hydrogen bonding between NH and C=O groups. In the 1H NMR the NH was observed at 9.96 ppm, and in the FTIR spectrum, the νNH and the νC=O were observed at 3167 cm–1 and 1621 cm–1, respectively.

Graphical Abstract