{
  "annotation_id": "ab949e21-daff-499a-9110-daaba8d49e21",
  "date_created": "2026-03-02T18:01:11.171000Z",
  "date_modified": "2026-03-02T18:01:11.171000Z",
  "file_hash": "cad6a5610a7f800ac42610fa6e28366f690bb702e0f00d7b4674a29f37203af1",
  "private": false,
  "record": {
    "abstract": "A new stable pyrrolidine functionalized fullerene derivative, C69H10N2O2, has\nbeen synthesized, purified by high performance liquid chromatography, and\ncharacterized by MALDI mass spectrometry, ultraviolet-visible spectroscopy,\nFourier transform infrared, 1H and 13C nuclear magnetic resonance. The magnetic\nproperties of the analogous endohedral species have been studied by both\ncontinuous wave (CW) and pulsed EPR. CW-EPR spectra indicated an anisotropic\nhyperfine interaction and a permanent zero-field-splitting (ZFS). Both CW and\npulsed EPR showed the ZFS parameter Deff to be around 17 MHz. Pulsed EPR\nrevealed a biexponential decay in both T1 and T2, yielding a molecular tumbling\ncorrelation time of 31.4 +/- 2.5 ps.",
    "arxiv_id": "physics/0609090",
    "authors": [
      "Jinying Zhang",
      "John J. L. Morton",
      "Mark R. Sambrook",
      "Kyriakos Porfyrakis",
      "Arzhang Ardavan",
      "G. Andrew D. Briggs"
    ],
    "categories": [
      "physics.chem-ph"
    ],
    "doi": "10.1016/j.cplett.2006.10.116",
    "title": "The effects of a pyrrolidine functional group on the magnetic properties   of N@C60",
    "url": "https://arxiv.org/abs/physics/0609090"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5b030dbb-5703-4c24-b947-3b90a798f04b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}