{
  "abstract": "Development of air- and thermally stable organic radicals remains challenging due to the highly transient nature of the free radicals. Herein, we present a strategy for isolating a highly stable N-heterocyclic carbenes (NHCs) stabilized cyclic (amino)(aryl)nitrenium (CAArN) radical. This is the first example of a CAArN radical isolated in the solid state, and its identity has been confirmed by single-crystal X-ray diffraction and various spectroscopic studies. These CAArN radical exhibits remarkable stability towards air, water, strong acidic/alkaline conditions, aqueous buffers, and high temperature (~412 °C). The radical residing on two distinct redoxactive motifs exhibits unique temperature-dependent bistability in solution, as evidenced by VT-EPR and VT-UV-vis spectral studies. Polar solvents have played a crucial role in stabilizing the imidazolium motif, thereby facilitating the radical bistability. Further, by employing KC8, selective reduction of the NHC-moiety bonded to the CAArN radical was achieved to yield Thiele’s type hybrid diradicaloid.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 1,
  "authors": [
    {
      "name": "Geetharani K",
      "orcid": "0000-0003-2064-1297"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/f8qsn0jzr5k7a.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15010441/v1",
  "fulltext_url": null,
  "id": "f8qsn0jzr5k7a",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010441/v1",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1605|N-Heterocyclic Carbenes in Organic and Inorganic Chemistry"
    ]
  ],
  "openalex": "W7221810335",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15010441/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-14",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/f8qsn0jzr5k7a.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:24Z",
      "native_id": "10.26434/chemrxiv.15010441",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010441/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1605|N-Heterocyclic Carbenes in Organic and Inorganic Chemistry",
      "subfield": "organic"
    }
  ],
  "title": "A Highly Stable Cyclic (Amino)(Aryl)Nitrenium Radical Dication Exhibiting Temperature-Dependent Radical Bistability Maruti Suryavansi,a Manas Khatua,b,d Bappaditya Goswami,c Apurba Kumar Pal,a Subhas Samanta,*d and K. Geetharani*",
  "title_text": "A Highly Stable Cyclic (Amino)(Aryl)Nitrenium Radical Dication Exhibiting Temperature-Dependent Radical Bistability Maruti Suryavansi,a Manas Khatua,b,d Bappaditya Goswami,c Apurba Kumar Pal,a Subhas Samanta,*d and K. Geetharani*",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:24Z",
  "url": "https://research.draconitic.com/paper/f8qsn0jzr5k7a",
  "venue": "ChemRxiv",
  "versions": []
}