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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=97762
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Title
Synthesis and structure of a new polymorph Ba2 Cu Si2 O7.
Authors
Du Ji-Min; Zeng Hui-Yi; Song Li-Jun; Dong Zhen-Chao; Ma Hong-Wei; Guo Guo-Cong; Huang Jin-Shun
Reference
IC&volume=22&fpage=33&details=yes target=icsd_help>Jiegon Huaxue (2003)
22
, 33-36
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Compound
Ba2 Cu1 O7 Si2
- Dibarium copper disilicate - beta
[
AB2C2X7
] [
tP24
] [
f e3 c a
] [
Ca2MgSi2O7
]
Cell
8.284(2), 8.284(2), 5.313(3), 90, 90, 90
P4-21M (113)
V=364.6
Remarks
R=0.034300 : T =Ca2MgSi2O7 :
Atom (site) Oxid.
x, y, z, B, Occupancy
Ba1
(4e)
2
Cu1
(2a)
2
Si1
(4e)
4
O1
(2c)
-2
O2
(4e)
-2
O3
(8f)
-2
0.33
0.16
0.50
0.00
1
0.
0.
0.
0.01
1
0.13
0.36
0.97
0.00
1
0.
0.5
0.87
0.01
1
0.13
0.36
0.27
0.01
1
0.07
0.19
0.84
0.01
1
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