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Zintl phases contain polynuclear semimetal anions which exhibit an extraordinary structural variety with zero-, one-, two-, or three dimensional linkages. They exhibit ionic as well as covalent interactions and are between classical valence compounds and intermetallic phases. In a traditional understanding they are semiconductors, however according to novel investigations they may also be low dimensional metals. In any case, all valence electrons can be assigned to the polyanionic centers, the bonding of which follows valence rules which apply for localized bonding.
Selected publications: F. Zürcher and R. Nesper "Cationic channels with partial anion occupation in the Zintl phases Ba₂Mg₁₂Ge_7.33 and Ba₆Mg_17.4Li_2.6Ge₁₂O_0.64" Z. Anorg.Allg.Chem., 2002, 628/7,1581-1589 Keywords: Zintl phases, Zintl anions, Supercations, Germanides, Crystal structures, ELF (electron localization function) abstract \| full text F. Zürcher, S. Wengert, R. Nesper Crystal structure of barium dimagnesium dilithium disilicide, BaMg₂Li₂Si₂, and of barium dimagnesium dilithium digermanide, BaLi₂Mg₂Ge₂. Z. Kristallogr. - New Cryst. Struc. 2001, 216(4), 503-504 Funding: "Synthesis, Structure, and Properties of Solids" Swiss National Science Foundation Nr. 20-66717.01 "Nano Cage Materials" IHP - European - Network Links: Electron Localization Function - ELF ELF-homepage (Editor: Frank R. Wagner)