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<p>Metallaromatics such as metallabenzene and its heteroatom-containing analogues have aroused interests both in experimental and theoretical studies. While various six-membered metallaaromatics have been explored, a general synthetic methodology is still undeveloped. Herein, we report the skeletal editing of five-membered metallacyclopentadiene involving the insertion of the sixth atoms (S, Se, N, C) into the Os–C bond, as a general approach for osmafluoranthene derivatives containing osmathiabenzene, osmaselenabenzene, osmapyridine, and osmabenzene units. These complexes show broad UV-Vis absorptions, and their aromaticity has been authenticated spectroscopically, structurally and computationally.</p>

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Ring expansion of osmacyclopentadiene affords diverse six-membered osmaaromatics

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月18日

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  • Yue Zhao,
  • Bingjie Fu,
  • Yang Li,
  • Di Liu,
  • Wei Bai

摘要

Metallaromatics such as metallabenzene and its heteroatom-containing analogues have aroused interests both in experimental and theoretical studies. While various six-membered metallaaromatics have been explored, a general synthetic methodology is still undeveloped. Herein, we report the skeletal editing of five-membered metallacyclopentadiene involving the insertion of the sixth atoms (S, Se, N, C) into the Os–C bond, as a general approach for osmafluoranthene derivatives containing osmathiabenzene, osmaselenabenzene, osmapyridine, and osmabenzene units. These complexes show broad UV-Vis absorptions, and their aromaticity has been authenticated spectroscopically, structurally and computationally.