{
  "abstract": "High-valent neutral copper(III) complexes are highly elusive species with strong Lewis acidic properties and high effective nuclear charge. Herein, an unprecedented copper(III) cyanide [Cu(CF3)2(CN)]4 stabilized in a tetrameric square-like scaffold with bridging cyanide ligands was isolated and fully characterized in the form of tetrahydrate [Cu(CF3)2(CN)(H2O)]4, including X-ray crystallography. This tetrameric scaffold is stable to Lewis bases, while the apical ligands easily undergo substitution to acetonitrile and cis-trans isomerization in the presence of acetone. Lewis acidity of copper(III) cyanides – hypothetical Cu(CF3)2(CN) and a tetrameric scaffold [Cu(CF3)2(CN)]4 – was evaluated by experimental and computational methods. Relevance of the [Cu(CF3)2(CN)(solv)]4 scaffold for carbon-carbon bond formation was demonstrated by spontaneous reductive elimination of CF3CN at room temperature in high yield, and trifluoromethylation of a boronic acid.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "name": "Vladimir Motornov",
      "orcid": "0000-0002-4951-8113"
    },
    {
      "name": "Niklas Limberg"
    },
    {
      "name": "Ahmet N. Toraman"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7zbgm2q0ssywv.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15010871/v1",
  "fulltext_url": null,
  "id": "7zbgm2q0ssywv",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010871/v1",
  "language": null,
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1605|Organometallic Complex Synthesis and Catalysis"
    ]
  ],
  "openalex": "W7223176401",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15010871/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/7zbgm2q0ssywv.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:26Z",
      "native_id": "10.26434/chemrxiv.15010871",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010871/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1605|Organometallic Complex Synthesis and Catalysis",
      "subfield": "organic"
    }
  ],
  "title": "High-Valent Copper(III) Cyanide Tetramer Stabilized by Trifluoromethyl Ligands and its Multifaceted Reactivity",
  "title_text": "High-Valent Copper(III) Cyanide Tetramer Stabilized by Trifluoromethyl Ligands and its Multifaceted Reactivity",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:26Z",
  "url": "https://research.draconitic.com/paper/7zbgm2q0ssywv",
  "venue": "ChemRxiv",
  "versions": []
}