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Preparation and Characterization of Rare Earth Rhenium Oxides Ln6ReO12, Ln=Ho, Er, Tm, Yb, Lu

✍ Scribed by T Hartmann; H Ehrenberg; G Miehe; G Wltschek; H Fuess


Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
151 KB
Volume
148
Category
Article
ISSN
0022-4596

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✦ Synopsis


Compounds of the series Ln 6 ReO 12 , Ln‫؍‬Ho, Er, Tm, Yb, and Lu, have been prepared by subsolidus reaction and are isotypic with Ln 6 MoO 12 , Ln 6 WO 12 , and Ln 6 UO 12 , crystallizing in space group R3 with Z‫3؍‬ for the R-centered setting. The magnetic moment per rhenium ion in Lu 6 ReO 12 is 0.74(1) B , and Yb 6 ReO 12 orders antiferromagnetically below 2.15(10) K.


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The crystal structure of the known compounds Ln 5 Re 2 O 12 (Ln = Y, Gd, DyΒ±Lu) and the new isotypic terbium rhenate Tb 5 Re 2 O 12 was determined from X-ray data of a twinned crystal of Ho 5 Re 2 O 12 : B2/m, a = 1236.5(4) pm, b = 748.2(2) pm, c = 563.8(1) pm, c = 107.73(3)Β°, Z = 2, R = 0.034 for 3