{
  "abstract": "A new icosahedral superatom UH$_{12}$ is reported and analyzed using post-Hartree-Fock multiconfigurational methods. A RASSCF/CASPT2/RASSI/SINGLE_ANISO workflow is employed to determine the electronic energy levels and magnetic properties. Superatomic characteristics, such as orbital topologies and shell filling order, are discussed. The high hydrogen-to-uranium ratio and potential for optically stimulated decomposition make UH$_{12}$ worth investigation in the context of hydrogen storage. The electric-dipole transition oscillator strengths of the molecule vanish, while its lowest electronic transitions fall in the THz and infrared ranges. The lowest septet manifold exhibits crystal-field splitting into a 1+3+3 pattern, as expected from icosahedral symmetry. In turn, the interlevel gaps within these crystal-field triplets are 30-150 GHz (1-5 cm$^{-1}$). The molecule is magnetically isotropic at low fields, while its levels exhibit higher-order Zeeman anisotropy that becomes significant around 2 Tesla. These properties suggest potential relevance for quantum computing, quantum communication, and quantum memory, including qubit- and qudit-based architectures.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.01863",
  "author_total": 2,
  "authors": [
    {
      "name": "Andrii Shyichuk"
    },
    {
      "name": "Eugeniusz Zych"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7aa4fvybwhghh.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.01863",
  "fulltext_url": null,
  "id": "7aa4fvybwhghh",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.01863",
  "language": null,
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.chem-ph"
    ],
    [
      "openalex",
      "1604|Radioactive element chemistry and processing"
    ]
  ],
  "openalex": "W7207553058",
  "pdf_url": "https://arxiv.org/pdf/2609.01863",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7aa4fvybwhghh.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:16Z",
      "native_id": "2609.01863",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.01863"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "arxiv:physics.chem-ph",
      "subfield": "physical"
    }
  ],
  "title": "Dodecahydrogen uranium: an icosahedral f-electron superatom with 26-electron shell structure",
  "title_text": "Dodecahydrogen uranium: an icosahedral f-electron superatom with 26-electron shell structure",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:16Z",
  "url": "https://research.draconitic.com/paper/7aa4fvybwhghh",
  "venue": "arXiv",
  "versions": []
}