{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,26]],"date-time":"2026-08-26T09:26:44Z","timestamp":1787736404031,"version":"build-2784847793"},"reference-count":30,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2017,1,18]],"date-time":"2017-01-18T00:00:00Z","timestamp":1484697600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Angew Chem Int Ed"],"published-print":{"date-parts":[[2017,2,20]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>A new clathrate type has been discovered in the Ba\/Cu\/Zn\/P system. The crystal structure of the Ba<jats:sub>8<\/jats:sub><jats:italic>M<\/jats:italic><jats:sub>24<\/jats:sub>P<jats:sub>28+<jats:italic>\u03b4<\/jats:italic><\/jats:sub> (<jats:italic>M<\/jats:italic>=Cu\/Zn) clathrate is composed of the pentagonal dodecahedra common to clathrates along with a unique 22\u2010vertex polyhedron with two hexagonal faces capped by additional partially occupied phosphorus sites. This is the first example of a clathrate compound where the framework atoms are not in tetrahedral or trigonal\u2010pyramidal coordination. In Ba<jats:sub>8<\/jats:sub><jats:italic>M<\/jats:italic><jats:sub>24<\/jats:sub>P<jats:sub>28+<jats:italic>\u03b4<\/jats:italic><\/jats:sub> a majority of the framework atoms are five\u2010 and six\u2010coordinated, a feature more common to electron\u2010rich intermetallics. The crystal structure of this new clathrate was determined by a combination of X\u2010ray and neutron diffraction and was confirmed with solid\u2010state <jats:sup>31<\/jats:sup>P\u2005NMR spectroscopy. Based on chemical bonding analysis, the driving force for the formation of this new clathrate is the excess of electrons generated by a high concentration of Zn atoms in the framework. The rattling of guest atoms in the large cages results in a very low thermal conductivity, a unique feature of the clathrate family of compounds.<\/jats:p>","DOI":"10.1002\/anie.201611510","type":"journal-article","created":{"date-parts":[[2017,1,18]],"date-time":"2017-01-18T09:07:05Z","timestamp":1484730425000},"page":"2418-2422","source":"Crossref","is-referenced-by-count":34,"title":["Breaking the Tetra\u2010Coordinated Framework Rule: New Clathrate Ba<sub>8<\/sub><i>M<\/i><sub>24<\/sub>P<sub>28+<i>\u03b4<\/i><\/sub> (<i>M<\/i>=Cu\/Zn)"],"prefix":"10.1002","volume":"56","author":[{"given":"Juli\u2010Anna","family":"Dolyniuk","sequence":"first","affiliation":[{"name":"Department of Chemistry The University of California, Davis  One Shields Avenue Davis CA 95616 USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julia V.","family":"Zaikina","sequence":"additional","affiliation":[{"name":"Department of Chemistry The University of California, Davis  One Shields Avenue 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