{
  "abstract": "An angle-based geometry index for the direct comparison of 8-coordinate molecular complexes is presented herein. The method was designed as a readily accessible tool to evaluate experimental coordination complexes via the degree of distortion between the three most common interconvertible 8-vertex polyhedra for molecular compounds: square antiprism, biaugmented triangular prism, and dodecahedron. Analogous to the well-established geometric analysis methods for 4- and 5-coordinate compounds (τ4 and τ5, respectively), τ8 assesses the geometry of an 8-coordinate compound based on the angles around the metal center formed through ligand coordination contrasting with other methods utilizing the angles between polyhedral faces. This is an alternative and complementary approach to evaluating the central metal geometries of 8-coordinate compounds, designed to bolster the growing field of high-coordinate metal complex chemistry and provide a readily implemented framework for comparative analysis.",
  "abstract_shown": true,
  "affiliations": [
    "Chemical Sciences Division",
    "Lawrence Berkeley National Laboratory",
    "Physical and Life Sciences Directorate",
    "Lawrence Livermore National Laboratory",
    "Department of Chemistry",
    "University of Connecticut",
    "Department of Nuclear Engineering and Department of Chemistry",
    "University of California, Berkeley"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "affs": [
        0,
        1,
        2,
        3
      ],
      "name": "Appie Peterson"
    },
    {
      "affs": [
        0,
        1,
        2,
        3
      ],
      "name": "S. Olivia Gunther"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "David K. Shuh"
    },
    {
      "affs": [
        0,
        1,
        4,
        5
      ],
      "name": "Gaël Ung"
    },
    {
      "affs": [
        0,
        1,
        6,
        7
      ],
      "name": "Rebecca J. Abergel",
      "orcid": "0000-0002-3906-8761"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e8j4m7jetfj6v.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15009510/v1",
  "fulltext_url": null,
  "id": "e8j4m7jetfj6v",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009510/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",
      "1604|Crystal structures of chemical compounds"
    ]
  ],
  "openalex": "W7214620956",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15009510/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-27",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/e8j4m7jetfj6v.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:21Z",
      "native_id": "10.26434/chemrxiv.15009510",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15009510/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1604|Crystal structures of chemical compounds",
      "subfield": "inorganic"
    }
  ],
  "title": "τ8: an Angle-Based Geometry Index for 8-Coordinate Complexes",
  "title_text": "τ8: an Angle-Based Geometry Index for 8-Coordinate Complexes",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:21Z",
  "url": "https://research.draconitic.com/paper/e8j4m7jetfj6v",
  "venue": "ChemRxiv",
  "versions": []
}