{
  "abstract": "The incommensurately modulated structures of two related organic hydroxy-channel compounds [( R )-1-(1,3-dihydroxypropan-2-yl)-3-(octan-2-yl)urea, 1 ; 1-(1,3-dihydroxypropan-2-yl)-3-octylurea, 2 ] have been determined and compared to the structure of a non-modulated reference compound [( R )-bis-3-(octan-2-yl)urea, 3 ] lacking hydroxy-channel forming groups. The origin of the modulation is explored through the competition between strong orthogonal urea–urea and hydroxy–hydroxy interactions, though this competition may not be a prerequisite for modulation. Notably, the modulation in these two compounds is unusually pronounced, as shown by the first-order satellite reflections exhibiting intensities comparable to those of the main reflections. This observation is contextualized by comparing the relative intensity differences between main and satellite reflections in a benchmark set of 117 modulated structures. Additionally, an alternative graphical method is introduced to visualize structural modulation within the basic unit cell. This method combines a conventional ball-and-stick representation of the average structure with Lissajous curves that map the spatial modulation onto the unit cell. The curves are color-coded according to the modulation t -parameter, enabling immediate visualization of in-phase and out-of-phase individual modulation displacements.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 9,
  "authors": [
    {
      "name": "Arie van der Lee"
    },
    {
      "name": "Ioan Stroia"
    },
    {
      "name": "Li-Bo Huang"
    },
    {
      "name": "Erol Licsandru"
    },
    {
      "name": "Istvan Kocsis"
    },
    {
      "name": "Mihail Deleanu"
    },
    {
      "name": "Christian Hübschle"
    },
    {
      "name": "Mihail Barboiu"
    },
    {
      "name": "Olivier Pérez"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0vvk8dph77tw1.bib",
  "cited_by": 0,
  "doi": "10.1107/s2052520626004932",
  "fulltext_url": null,
  "id": "0vvk8dph77tw1",
  "issns": [
    "2052-5206",
    "2052-5206"
  ],
  "landing_url": "https://hal.umontpellier.fr/hal-05756485v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "openalex",
      "1604|Crystal structures of chemical compounds"
    ]
  ],
  "openalex": "W7164196116",
  "pdf_url": "https://hal.umontpellier.fr/hal-05756485/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-06-10",
  "publisher": "International Union of Crystallography / Wiley",
  "ris": "https://research.draconitic.com/paper/0vvk8dph77tw1.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:36Z",
      "native_id": "hal-05756485",
      "source": "hal",
      "url": "https://hal.umontpellier.fr/hal-05756485v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1604|Crystal structures of chemical compounds",
      "subfield": "inorganic"
    }
  ],
  "title": "Deciphering unusually large modulations in two related organic hydroxy channel structures",
  "title_text": "Deciphering unusually large modulations in two related organic hydroxy channel structures",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:36Z",
  "url": "https://research.draconitic.com/paper/0vvk8dph77tw1",
  "venue": "Acta Crystallographica Section B : Structural Science, Crystal Engineering and Materials [2014-...]",
  "versions": []
}