Journal article

Publication year: 1993

Pages: 228-236

Journal: Journal of Inorganic and General Chemistry

Volume number: 619

Issue number: 2

ISSN: 0044-2313

DOI Link: https://doi.org/10.1002/zaac.19936190203

Publisher: Wiley

Abstract: 
The thermal decompositon of the hexagonal La2CeTaO6Cl3 led to a mixed-valent product La2Cex3+Ce1-x4+TaO6Cl3-x with a complicated monoclinic structure. The detailed inspection shows two subunits A and B, which form the monoclinic unit cell by a ABAB sequence. The subunit A is almost identical to the hexagonal cell of the starting material while subunit B has additional Ln- and Cl-positions. For this reason, the main structure features of the monoclinic compound and the starting material are related, which is clearly seen in the electron microscopy investigations. As might be expected from the relationship between the subunits A and B one can observe defects in the monoclinic compound arising from the various possibilities of combining these building elements. We also found structure defects in the hexagonal starting material, which are caused by the presence of the subunit B.

Harvard Citation style: FIEDLER, K., MERTIN, W. and GRUEHN, R. (1993) HIGH-RESOLUTION ELECTRON-MICROSCOPY INVESTIGATIONS OF LA2CETAO6CL3 AND ITS THERMAL-DECOMPOSITION PRODUCT LA2CE-X(3+)CE-1-X(4+)TAO6CL3-X, Zeitschrift für anorganische und allgemeine Chemie = Journal of Inorganic and General Chemistry, 619(2), pp. 228-236. https://doi.org/10.1002/zaac.19936190203

APA Citation style: FIEDLER, K., MERTIN, W., & GRUEHN, R. (1993). HIGH-RESOLUTION ELECTRON-MICROSCOPY INVESTIGATIONS OF LA2CETAO6CL3 AND ITS THERMAL-DECOMPOSITION PRODUCT LA2CE-X(3+)CE-1-X(4+)TAO6CL3-X. Zeitschrift für anorganische und allgemeine Chemie = Journal of Inorganic and General Chemistry. 619(2), 228-236. https://doi.org/10.1002/zaac.19936190203