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Rb2CdSiO4: Synthesis and Crystal Structure

✍ Scribed by Jens Hansing; Angela Möller

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
436 KB
Volume
162
Category
Article
ISSN
0022-4596

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✦ Synopsis

The new compound Rb 2 CdSiO 4 has been synthesized from Rb 2 CdO 2 and SiO 2 in the presence of excess Rb 2 O (typical molar ratio 1:1:2) under Ar atmosphere in a sealed Ag container at 3303 3C (40d). The twinned structure has been re5ned from X-ray single crystal data. Rb 2 CdSiO 4 was found to crystallize in the space group C222 1 (No. 20) with a ‫؍‬ 1142.6(2) pm, b ‫؍‬ 1102.3(1) pm, c ‫؍‬ 1672.5(2) pm. The lattice constants were re5ned from X-ray powder data. The crystal structure can be described as a stu4ed derivative of the -cristobalite modi5cation of SiO 2 .

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