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Reticular Merohedric Twinning — The Crystal Structure of GdTe2−δ

✍ Scribed by Y. Wu; Th. Doert; P. Böttcher


Publisher
John Wiley and Sons
Year
2002
Tongue
German
Weight
51 KB
Volume
628
Category
Article
ISSN
0372-7874

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The crystal structure of -Na 2 Si 2 O 5 has been solved and re-5ned to an R index of 0.053 for 933 independent re6ections. The compound is monoclinic with space group P2 1 /n (a ‫؍‬ 8.393(2) A s , b ‫؍‬ 12.083(3) A s , c ‫؍‬ 4.843(1) A s , ‫؍‬ 90.37(3)3, V ‫؍‬ 491.1(1) A s 3 , M r ‫؍‬ 182.15 u, Z ‫؍

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The title compounds were synthesized and their crystal structures were determined by powder X-ray di4raction methods. Both phases are tetragonal and crystallize in space group P4/mmm, NdTe 2 O 5 Cl with cell constants a ‫؍‬ 4.0373(1), c ‫؍‬ 8.7912(3) A s , and GdTe 2 O 5 Cl a ‫؍‬ 3.9611(2), c ‫؍‬ 8.