{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,15]],"date-time":"2026-07-15T09:12:45Z","timestamp":1784106765536,"version":"3.55.0"},"reference-count":30,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2008,6,4]],"date-time":"2008-06-04T00:00:00Z","timestamp":1212537600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Slovak Grant Agencies","award":["APVT-51-008104, VEGA 2\/7077\/27"],"award-info":[{"award-number":["APVT-51-008104, VEGA 2\/7077\/27"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Magnetic Reson in Chemistry"],"published-print":{"date-parts":[[2008,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Phosphorus is one of the predominant impurities in the Hall\u2013Heroult process for industrial aluminium production. The nature of the dissolved phosphorus species in the Na<jats:sub>3<\/jats:sub>AlF<jats:sub>6<\/jats:sub>\uf8ffAlPO<jats:sub>4<\/jats:sub> system has been investigated by <jats:bold><jats:italic>in situ<\/jats:italic><\/jats:bold> high\u2010temperature (HT) <jats:sup>19<\/jats:sup>F, <jats:sup>23<\/jats:sup>Na, <jats:sup>27<\/jats:sup>Al, <jats:sup>17<\/jats:sup>O, and <jats:sup>31<\/jats:sup>P NMR. The combination of these experiments enables to define the presence of PO<jats:sub>4<\/jats:sub><jats:sup>3\u2212<\/jats:sup>, AlF<jats:sub>5<\/jats:sub><jats:sup>2\u2212<\/jats:sup> and (AlF<jats:sub>4<\/jats:sub>\uf8ffO\uf8ffPO<jats:sub>3<\/jats:sub>)<jats:sup>4\u2212<\/jats:sup> anions in the melt, and then the formation of Al\uf8ffO\uf8ffP bonding. Melts solidified at different cooling rates were characterised using various solid\u2010state NMR techniques including multiple quantum magic angle spinning (MQMAS), rotational echo double resonance (REDOR) and heteronuclear single quantum correlation (HSQC). The glass obtained by the rapid quenching of the hypereutectic melt has been carefully described in order to better understand the structure of the melt. Copyright \u00a9 2008 John Wiley &amp; Sons, Ltd.<\/jats:p>","DOI":"10.1002\/mrc.2248","type":"journal-article","created":{"date-parts":[[2008,6,4]],"date-time":"2008-06-04T07:19:50Z","timestamp":1212563990000},"page":"803-810","source":"Crossref","is-referenced-by-count":15,"title":["Multi\u2010nuclear magnetic resonance study of Na<sub>3<\/sub>AlF<sub>6<\/sub>\uf8ffAlPO<sub>4<\/sub> molten and solidified mixtures"],"prefix":"10.1002","volume":"46","author":[{"given":"M.","family":"Keppert","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"Rakhmatullin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"F.","family":"Simko","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael","family":"Deschamps","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G. 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