{
  "annotation_id": "b0a026b6-f730-4d9d-b395-c02a7a4d6bfc",
  "date_created": "2026-03-02T18:01:00.065000Z",
  "date_modified": "2026-03-02T18:01:00.065000Z",
  "file_hash": "9d029b246476e0ed32e3eabd8e7a09e3fe7da571bf8e082a6f8905dd2dbf7b5b",
  "private": false,
  "record": {
    "abstract": "A sigma-pi separation analysis of the energies in Al4Li4 reveals that the\nsystem is more pi-antiaromatic than the sigma-aromaticity in it. This is true\nalso for C4H4 and Ga4Li4. Unlike C4H4 that has a very large component of\npi-antiaromaticity, for these all-metal clusters, these energy scales are\ncomparable though pi-antiaromaticity is the major driving force for the\ndistortion of the these molecules from the square (sigma-aromatic) structure to\nthe rectangular (pi-antiaromatic) architecture. For the dianion Al4Li42-, the\nsigma-equalization prevails over the pi-distortion in Al4Li4 and for the\ndication Al4Li42+, pi-equalization is the driving force for the square\nsymmetric structure.",
    "arxiv_id": "physics/0507037",
    "authors": [
      "Ayan Datta",
      "Swapan K. Pati"
    ],
    "categories": [
      "physics.chem-ph"
    ],
    "title": "Rationalization of pi(sigma) anti(aromaticity) in all metal molecular   clusters",
    "url": "https://arxiv.org/abs/physics/0507037"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ccb62fb7-5f1b-4236-9abf-d139669deb7b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}