TY - JOUR
T1 - Structure and chemical bonding in K14Cd9Tl21, a compound containing both isolated Tl11/7- clusters and (∞)/2([Cd9Tl10/7-] metallic layers
AU - Tillard-Charbonnel, Monique
AU - Chahine, Abdelkrim
AU - Belin, Claude
AU - Rousseau, Roger
AU - Canadell, Enric
PY - 1997/5
Y1 - 1997/5
N2 - The compound K14Cd9Tl21 has been prepared by fusion of the elements in a tantalum reactor followed by slow cooling at the rate of 6 per hour to enable crystal growth. The X-ray crystal structure (hexagonal, P62m; a = 9.884(3),c= 17.173(5) Å; Z= 2) was refined to reliability factors of R1 = 5.09, wR2 = 11.64%. The anionic substructure contains both isolated clusters of Tl11/7- and a layered network based on Cd5Tl2 pentagonal bipyramids. The structure electron count relationship for the Tl11/7- cluster was analyzed in detail. The Cd9Tl10/7- layers are found to confer metallic properties to the material, and the bonding within such layers is found to be highly delocalized.
AB - The compound K14Cd9Tl21 has been prepared by fusion of the elements in a tantalum reactor followed by slow cooling at the rate of 6 per hour to enable crystal growth. The X-ray crystal structure (hexagonal, P62m; a = 9.884(3),c= 17.173(5) Å; Z= 2) was refined to reliability factors of R1 = 5.09, wR2 = 11.64%. The anionic substructure contains both isolated clusters of Tl11/7- and a layered network based on Cd5Tl2 pentagonal bipyramids. The structure electron count relationship for the Tl11/7- cluster was analyzed in detail. The Cd9Tl10/7- layers are found to confer metallic properties to the material, and the bonding within such layers is found to be highly delocalized.
KW - Zintl phases
KW - cadmium
KW - clusters
KW - layered compounds
KW - semiempirical calculations
KW - thallium
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U2 - 10.1002/chem.19970030520
DO - 10.1002/chem.19970030520
M3 - Article
AN - SCOPUS:0031011905
VL - 3
SP - 799
EP - 806
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
SN - 0947-6539
IS - 5
ER -