Synthesis and Characterization of the New Rare-Earth/Transition-Metal Oxysulfides La6Ti2S8O5 and La4Ti3S4O8
โ Scribed by Jason A. Cody; James A. Ibers
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 379 KB
- Volume
- 114
- Category
- Article
- ISSN
- 0022-4596
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Two new titanium oxychlorosul5de compounds, Bi 0.
The new compounds La 4 Ti 2 O 4 Se 5 and La 6 Ti 3 O 5 Se 9 have been obtained from stoichiometric reactions of La, Ti, TiO 2 , and Se in fused-silica tubes at 1223 K. Potassium halide 6uxes were used to promote the crystallization. The compounds have been characterized by single-crystal X-ray di4ra
a new structure type in a cell of dimensions a โซุโฌ 5.667(1), b โซุโฌ 15.666(3), c โซุโฌ 17.534(3) A > with four formula units in space group D 28 2h -Imma of the orthorhombic system at T โซุโฌ 153 K. The structure comprises [Cu 2 S 2 ] anti6uorite-like and [La 10 S 2 O 8 ] 6uorite-like layers, and these t