10.1016_0022-4596(81)90181-x.pdf - 260 ABSTRACTS OF FORTHCOMING Etude Cristallochimique Comparee et Conductivite CACHAU-HERREILLAT A NORBERT M MAURIN

10.1016_0022-4596(81)90181-x.pdf - 260 ABSTRACTS OF...

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260 ABSTRACTS OF FORTHCOMING ARTICLES Etude Cristallochimique Comparee et Conductivite Ionique des Deux Varietes Li,Te,O, o( et B. D. CACHAU-HERREILLAT, A. NORBERT, M. MAURIN, AND E. PHILIPPOT,* Laboratoire de Chimie Minerale C, ERA 314, Chimie des Materiaux, Universite des Sciences et Techniques du Languedoc, Place Eugene Bataillon, 34060 Montpellier Cedex, France. Li,Te,O, (Y is monoclinic, space group P2,/n with a = 10.355(3), b = 4.702(l), c = 10.860(3) A, /3 = 110.13(l)“, and Z = 4. LizTezOSP is orthorhombic, space group Pnaa with a = 5.194(l), b = 8.170(2), c = 24.165(5) A, and Z = 8. The structure refinements were performed to final R values of 0.026 and 0.039 for Li2TeS05 a and p, respectively. The bidimensional network of these two crystal structures is characterized by sheets of Te,OB cycles for LieTe20J (Y and TeloOlz cycles for Li,Te,O&. The difference between these two crystal structures is based upon the distribution of the terminal Te-0 bonds of TelOs groups of the Li+ cations and of the lone pairs, E, of tellurium IV atoms. The results of electric conductivity measurements on homogenous ceramic disks are reported.
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