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Low-Valent, Multiply Bonded, Trigonal-Planar Sb Complex: Rational Syntheses, Dual Acidic/Basic Properties, and

Minghuey Shieh1, Yu-Huei Li1, Chia-Hsien Lin1

  • 1Department of Chemistry, National Taiwan Normal University (NTNU), Taipei 116325, Taiwan, Republic of China.

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Summary
This summary is machine-generated.

This study introduces a novel low-valent antimony complex, [Sb{Cr(CO)5}3]-, exhibiting unique electronic and chemical properties. This complex demonstrates semiconducting behavior and dual acid/base characteristics, opening new avenues in materials science.

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Area of Science:

  • Organometallic Chemistry
  • Materials Science
  • Inorganic Chemistry

Background:

  • Low-valent main group element complexes are of significant interest.
  • Understanding the electronic structure and reactivity of such complexes is crucial for developing new materials.

Purpose of the Study:

  • To synthesize and characterize a novel trigonal-planar, multiply bonded antimony complex, [Sb{Cr(CO)5}3]- (1).
  • To investigate the electronic properties, reactivity, and potential applications of this complex.

Main Methods:

  • Synthesis via hydride abstraction.
  • Characterization using X-ray photoelectron spectroscopy (XPS) and X-ray absorption near-edge structure (XANES).
  • Computational studies including time-dependent density functional theory (TD-DFT).

Main Results:

  • Successful synthesis of the low-valent antimony complex [Sb{Cr(CO)5}3]- (1) with Sb in the 0 oxidation state.
  • Demonstrated dual acid/base properties and electrophilicity of the Sb center.
  • Observed semiconducting behavior with a low energy gap (1.13 eV) and electrical conductivity.
  • Identified through-space conduction pathways via intermolecular interactions in the crystal structure.

Conclusions:

  • The synthesized complex exhibits unique electronic and chemical properties, including semiconducting behavior.
  • The study highlights the potential of low-valent main group element complexes in materials science.
  • Further research into similar complexes could lead to novel electronic materials.