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
Zürcher and R. Nesper
"Cationic channels with partial anion
occupation in the Zintl phases Ba2Mg12Ge7.33
Z. Anorg.Allg.Chem., 2002, 628/7,1581-1589
Keywords: Zintl phases, Zintl anions, Supercations, Germanides,
Crystal structures, ELF (electron localization function)
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),
Structure, and Properties of Solids"
Swiss National Science Foundation Nr. 20-66717.01
IHP - European - Network
Localization Function - ELF
(Editor: Frank R. Wagner)