@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00956466v1> a dcat:Dataset ;
    dct:description """
              Single crystals of the potassium salt (K<sub>5</sub>, H<sub>3</sub>O) [SiV<sub>3</sub>W<sub>9</sub>O<sub>40</sub>H]* <i>x</i>H<sub>2</sub>O of the vanadium tri-substituted α-Keggin dodecatungstosilicate were prepared and analyzed by vibrational, EPR and <sup>51</sup>V NMR spectroscopy. Varying the synthesis conditions allows crystallization of partially reduced anions. The crystal structure was determined for both oxidized (V<sup>5+</sup>) and partially reduced (V<sup>4+/5+</sup>) potassium salts. Single crystal X-ray diffraction data and solid state <sup>51</sup>V-NMR spectra confirm the occurrence of a single vanadium site in a cubic structure due to rotational disorder of the Keggin ion. Partially reduced compounds crystallize within the same structure as fully oxidized ones. EPR experiments confirm strong interaction of V<sup>4+</sup> with two V<sup>5+</sup> ions, in accordance with insertion of a V<sub>3</sub> subunit into the lacunary Keggin ion as designed in the synthesis method. The 3D-edifice is composed of K<sup>+</sup>/H<sub>2</sub>O counter-sublattice with evidence of tunable water occupancy.
            """ ;
    dct:identifier "hal-00956466" ;
    dct:issued "2026-05-06T03:02:33.020591"^^xsd:dateTime ;
    dct:language "en" ;
    dct:modified "2026-05-06T03:02:33.020595"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Keggin (K<sub>5</sub>, H<sub>3</sub>O)[SiV<sub>3</sub>W<sub>9</sub>O<sub>40</sub>H]* <i>x</i>H<sub>2</sub>O: Characterization and crystal structure" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
    dcat:distribution <https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00956466v1/resource/e0dcedf8-d7c6-49bb-91e8-0424acca2e7d> ;
    dcat:keyword "51v-nmr",
        "chimtheochemical-sciencestheoretical-andor-physical-chemistry",
        "epr",
        "infoeu-reposemanticsarticle",
        "journal-articles",
        "keggin-ion",
        "single-crystal-structure" ;
    dcat:landingPage <ISSN:%200022-4596> .

<ISSN:%200022-4596> a foaf:Document .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00956466v1/resource/e0dcedf8-d7c6-49bb-91e8-0424acca2e7d> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2026-05-06T03:02:33.032822"^^xsd:dateTime ;
    dct:modified "2026-05-06T03:02:32.997406"^^xsd:dateTime ;
    dct:title "Keggin (K<sub>5</sub>, H<sub>3</sub>O)[SiV<sub>3</sub>W<sub>9</sub>O<sub>40</sub>H]* <i>x</i>H<sub>2</sub>O: Characterization and crystal structure" ;
    dcat:accessURL <https://hal.science/hal-00956466> .

<https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> a foaf:Agent ;
    foaf:name "test_moissonnage_selune" .