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[求助]
求砷酸鐵的晶格常數(shù)
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金蟲 (正式寫手)
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*data for ICSD #170673 CopyRight ?2008 by Fachinformationszentrum Karlsruhe, and the U.S. Secretary of Commerce on behalf of the United States. All rights reserved. Coll Code 170673 Rec Date 2006/04/01 Mod Date 2007/04/01 Chem Name Iron Arsenate(V) Structured Fe (As O4) Sum As1 Fe1 O4 ANX ABX4 D(calc) 4.1 Title Thermal transformation of (N H4) (Fe (As O4) F) into the new textural porous orthorhombic Fe (As O4) phase. Crystal structures, thermal behavior, spectroscopic and magnetic properties Author(s) Bazan, B.;Mesa, J.L.;Pizarro, J.L.;Rodriguez-Fernandez, J.;Sanchez- Marcos, J.;Roig, A.;Molins, E.;Arriortua, M.I.;Rojo, T. Reference Chemistry of Materials (1,1989- (2004), 16(25), 5249-5259 Unit Cell 13.468(2) 6.5255(11) 10.7678(18) 90 90 90 Vol 946.33 Z 12 Space Group I m a m SG Number 74 Cryst Sys orthorhombic Pearson oI72 Wyckoff j2 i h f2 e d R Value .0221 Red Cell I 6.525 9.218 9.218 71.470 69.271 69.271 473.166 Trans Red 0.000 -1.000 0.000 / 0.500 -0.500 -0.500 / 0.500 -0.500 0.500 Comments The structure has been assigned a PDF number (calculated powder diffraction data): 01-073-3586 X-ray diffraction from single crystal Atom # OX SITE x y z SOF H As 1 +5 8 f 0.17659(3) 0.5 0.0 1 0 As 2 +5 4 e 0 0.18076(10) 0.75 1 0 Fe 1 +3 8 f 0.11382(4) 0 0.0 1 0 Fe 2 +3 4 d 0.25 0.25 0.75 1 0 O 1 -2 16 j 0.23451(16) 0.0406(3) 0.61442(17) 1 0 O 2 -2 16 j 0.10980(15) 0.2944(4) 0.4684(2) 1 0 O 3 -2 8 i 0.1051(2) 0.3128(5) 0.75 1 0 O 4 -2 8 h 0 0.0260(5) 0.6228(2) 1 0 Lbl Type U11 U22 U33 U12 U13 U23 As1 As5+ 0.0057(2) 0.0058(3) 0.0070(2) 0 0 -0.00084(14) As2 As5+ 0.0034(3) 0.0063(4) 0.0028(3) 0 0 0 Fe1 Fe3+ 0.0047(3) 0.0079(4) 0.0068(3) 0 0 0.0017(2) Fe2 Fe3+ 0.0063(4) 0.0072(5) 0.0034(4) -0.0008(3) 0 0 O1 O2- 0.0074(10) 0.0100(12) 0.0067(9) 0.0000(9) -0.0005(8) -0.0028(8) O2 O2- 0.0112(12) 0.0090(14) 0.0161(10) -0.0020(9) -0.0019(8) -0.0006(9) O3 O2- 0.0063(16) 0.0088(18) 0.0116(14) -0.0038(13) 0 0 O4 O2- 0.0078(14) 0.0089(18) 0.0041(12) 0 0 -0.0033(11) *end for ICSD #170673 |
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