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CC=Collection Code: [AB2X4]=ANX Form: [cF56]=Pearson: [e d a]=Wyckoff Symbol: [Al2MgO4]=Structure Type:
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CC=62356 Help
TitleCrystal structure of keivyite Yb2 (Si2 O7).
AuthorsYakubovich, O.V.;Simonov, M.A.;Voloshin, A.V.;Pakhomovskii, Ya.A.
ReferenceIC&volume=291&fpage=863&details=yes target=icsd_help>Doklady Akademii Nauk SSSR (1986) 291, 863-867
Link XRef SCOPUS Google
CompoundO7 Si2 Yb2 - [Keivyite (Yb)] Diytterbium disilicate [A2B2X7] [mS22] [j i2 g d] []
Cell4.715(1), 8.870(3), 6.805(3), 90., 102.01(3), 90.
A12/M1 (12) V=278.37
RemarksR=0.040400 : P =37-458 : M =Keivyite (Yb) :

Atom (site) Oxid. x, y, z, B, Occupancy
Yb1(4g)3
Si1(4i)4
O1(2d)-2
O2(4i)-2
O3(8j)-2
00.800.501
0.410.50.7101
0.50.50.501
0.710.50.8801
0.220.650.7301
Atom (site) Oxid. B11, B22, B33, B12, B13, B23
Yb1(4g)3
Si1(4i)4
O1(2d)-2
O2(4i)-2
O3(8j)-2
0.640.610.6100.130
0.670.730.9(00.380
1.6(2.1(0.6(00.3(0
1.0(0.7(1.2(00.4(0
1.3(0.8(1.4(0.3(0.6(0.1(

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