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田園聽雨6572新蟲 (小有名氣)
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[求助]
知道晶胞參數(shù),求原子坐標(biāo)
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畫晶體結(jié)構(gòu)圖示,知道空間群結(jié)構(gòu)及晶胞參數(shù),如何知道原子位置坐標(biāo)?求指點。! 分子式:WOx 空間群:P4/nmm(No.129) Z=2 a=b=5.31,c=3.93 α=β=γ=90. |
至尊木蟲 (職業(yè)作家)

銀蟲 (正式寫手)
新蟲 (小有名氣)
鐵桿木蟲 (職業(yè)作家)
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*data for ICSD #88367 Coll Code 88367 Rec Date 2001/07/16 Mod Date 2006/04/01 Chem Name Tungsten Oxide Structured W O3 Sum O3 W1 ANX AX3 D(calc) 6.96 Title Transition to a new tetragonal phase of W O3 : crystal structure and distortion parameters Author(s) Locherer, K.R.;Swainson, I.P.;Salje, E.K.H. Reference Journal of Physics: Condensed Matter (1999), 11, 4143-4156 Unit Cell 5.3031(4) 5.3031(4) 3.9348(3) 90. 90. 90. Vol 110.66 Z 2 Space Group P 4/n m m Z SG Number 129 Cryst Sys tetragonal Pearson tP8 Wyckoff d c2 R Value .033 Red Cell P 3.934 5.303 5.303 90 90 90 110.658 Trans Red 0.000 0.000 1.000 / 1.000 0.000 0.000 / 0.000 1.000 0.000 Comments Stable from 1183 to 1503 K (2nd ref., Tomaszewski), 1013- 1183 K: P4/ncc M.p. 1740 K Neutron diffraction (powder) The structure has been assigned a PDF number (calculated powder diffraction data): 01-089-8053 The structure has been assigned a PDF number (experimental powder diffraction data): 18-1417 Rietveld profile refinement applied Temperature in Kelvin: 1200 Atom # OX SITE x y z SOF H W 1 +6 2 c 0.25 0.25 -.0664(8) 1. 0 O 1 -2 2 c 0.25 0.25 0.4940(9) 1. 0 O 2 -2 4 d 0 0 0 1. 0 Lbl Type U11 U22 U33 U12 U13 U23 W1 W6+ 0.015(1) 0.015(1) 0.015(2) 0 0 0 O1 O2- 0.057(2) 0.057(2) 0.021(2) 0 0 0 O2 O2- 0.0340(9) 0.0340(9) 0.062(2) -.022(1) 0.001(1) 0.001(1) *end for ICSD #88367 |
銅蟲 (小有名氣)
新蟲 (小有名氣)
新蟲 (小有名氣)
金蟲 (著名寫手)
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