{
  "abstract": "Aqueous reactions of nickel(II) nitrate, propane-1,3-di-amine, and either naphthalene-1,5-di-sulfonic acid or disodium naphthalene-2,6-di-sulfonate produced crystals of trans-di-aqua-bis-(propane-1,3-di-amine-κ2N,N')nickel(II) naphthalene-1,5-di-sulfonate, (I), and trans-di-aqua-bis-(propane-1,3-di-amine-κ2N,N')nickel(II) naphthalene-2,6-di-sulfonate, (II), both [Ni(C3H10N2)2(H2O)2](C10H6O6S2), in high yields. (I) crystallizes in the monoclinic space group P21/c while (II) crystallizes in the triclinic space group P1. In both structures, the cation and anion rest on centers of inversion. The nickel cations display trans octa-hedral coordination of two water mol-ecules and two bidentate propane-1,3-di-amine mol-ecules with Ni-O/N bond distances in the ranges 2.0960 (9)-2.1205 (7) Å (I) and 2.1110 (7)-2.1181 (9) Å (II). The packing in both structures features alternating layers of complex cations and naphthalene-disulfonate anions held together by O-H⋯O and N-H⋯O hydrogen bonds between the water and amine groups of the ligands and the sulfonate groups of the anions. These are the first metal salts of naphthalene-1,5-di-sulfonate and naphthalene-2,6-di-sulfonate that contain propane-1,3-di-amine. The packing in (I) and (II) is compared to each other and to those found in other nickel salts of the anions.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Chemistry and Biochemistry Central Michigan University,Mount Pleasant Michigan 48859 USA.",
    "Department of Chemistry and Biochemistry, University of Toledo, Toledo, Ohio 43606, USA."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 2,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Philip J Squattrito"
    },
    {
      "affs": [
        1
      ],
      "name": "Christopher G Gianopoulos",
      "orcid": "0000-0002-8083-6400"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/326e4b49bjzgk.bib",
  "cited_by": 0,
  "doi": "10.1107/s2056989026010236",
  "fulltext_url": "https://europepmc.org/articles/PMC13741352",
  "id": "326e4b49bjzgk",
  "issns": [
    "2056-9890"
  ],
  "landing_url": "https://europepmc.org/article/MED/42997408",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1604|Crystal structures of chemical compounds"
    ]
  ],
  "openalex": "W7221165964",
  "pdf_url": "https://europepmc.org/articles/PMC13741352?pdf=render",
  "pmcid": "PMC13741352",
  "pmid": "42997408",
  "published": "2026-10-09",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/326e4b49bjzgk.ris",
  "sources": [
    {
      "first_seen": "2026-11-09T15:20:41Z",
      "native_id": "MED:42997408",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42997408"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1604|Crystal structures of chemical compounds",
      "subfield": "inorganic"
    }
  ],
  "title": "Syntheses and structures of trans-di-aqua-bis(propane-1,3-di-amine-κ²N,N')nickel(II) salts of two isomeric naphthalene-disulfonates.",
  "title_text": "Syntheses and structures of trans-di-aqua-bis(propane-1,3-di-amine-κ²N,N')nickel(II) salts of two isomeric naphthalene-disulfonates.",
  "type": "peer-reviewed",
  "updated_at": "2026-11-09T15:20:41Z",
  "url": "https://research.draconitic.com/paper/326e4b49bjzgk",
  "venue": "Acta crystallographica. Section E, Crystallographic communications",
  "versions": []
}