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cuimingshan金蟲 (小有名氣)
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【求助】知道這些數(shù)據(jù)之后如何在MS中建模? 已有3人參與
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*data for ICSD #66559 Coll Code 66559 Rec Date 1994/01/19 Chem Name Aluminium Oxide (2.1/3.2) - Gamma Structured Al2.144 O3.2 Sum Al2.144 O3.2 ANX A21X32 D(calc) 3.66 Title Structures and transformation mechanisms of the eta, gamma and theta transition aluminas Author(s) Zhou, R.-S.;Snyder, R.L. Reference Acta Crystallographica B (39,1983-) (1991), 47, 617-630 Unit Cell 7.911(2) 7.911(2) 7.911(2) 90. 90. 90. Vol 495.1 Z 10 Space Group F d -3 m Z SG Number 227 Cryst Sys cubic Pearson cF53 Wyckoff e2 d a R Value .076 Red Cell F 5.593 5.593 5.593 60 60 60 123.775 Trans Red 0.500 0.500 0.000 / 0.000 0.500 0.500 / 0.500 0.000 0.500 Comments Total SOF on at least one site differs from unity (SOF 1.003) Neutron diffraction (powder) Rietveld profile refinement applied Deviation of the charge sum from zero tolerable. Atom # OX SITE x y z SOF H ITF(B) O 1 -2 32 e 0.2547(5) 0.2547(5) 0.2547(5) 1. 0 1. Al 1 +3 16 d 0.5 0.5 0.5 0.58(1) 0 0.5 Al 2 +3 8 a 0.125 0.125 0.125 0.84(2) 0 0.5 Al 3 +3 32 e 0.0272(24) 0.0272(24) 0.0272(24) 0.17(2) 0 0.5 *end for ICSD #6655 我是這樣做的 build/crystals/build crystal 對(duì)話框中space group下的enter group選擇F d -3 m ,在add atoms后模型完全不是文獻(xiàn)中的樣子,請(qǐng)問(wèn)如何解決? |

木蟲 (正式寫手)
榮譽(yù)版主 (著名寫手)
金蟲 (小有名氣)

金蟲 (小有名氣)

木蟲 (正式寫手)
金蟲 (小有名氣)

金蟲 (小有名氣)

木蟲 (正式寫手)
金蟲 (小有名氣)
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*data for ICSD #99836 Coll Code 99836 Rec Date 2005/04/01 Chem Name Aluminium Oxide (2.667/4) - Gamma Structured (Al2 O3)1.333 Sum Al2.666 O3.999 ANX A11X16 Min Name Alumina gamma D(calc) 3.59 Title Tetragonal structure model for boehmite-derived gamma-alumina Author(s) Paglia, G.; Buckley, C.E.; Rohl, A.L.; Hunter, B.A.; Hart, R.D.; Hanna, J.V.; Byrne, L.T. Reference Physical Review, Serie 3. B - Condensed Matter (18,1978-) (2003), 68, 144110-1-144110-11 Unit Cell 5.652(1) 5.652(1) 7.871(5) 90 90 90 Vol 251.44 Z 4 Space Group I 41/a m d Z SG Number 141 Cryst Sys tetragonal Pearson tI27 Wyckoff h d c a R Value .0099 Red Cell I 5.608 5.608 5.608 90.882 119.491 119.491 125.72 Trans Red 0.500 0.500 -0.500 / -0.500 0.500 0.500 / 0.500 -0.500 0.500 Comments Total SOF on at least one site differs from unity (SOF < 0.997 resp. SOF > 1.003) Compound with mineral name: Alumina gamma The structure has been assigned a PDF number (calculated powder diffraction data): 01-074-4629 X-ray diffraction from single crystal Atom # OX SITE x y z SOF H ITF(B) O 1 -2 16 h 0. 0.0076(30) 0.2516(40) 1. 0 1.4(3) Al 1 +3 4 a 0. 0.750 0.125 0.78(2) 0 2.2(3) Al 2 +3 8 c 0. 0. 0. 0.36(1) 0 2.3(3) Al 3 +3 8 d 0. 0. 0.5 0.58(1) 0 2.3(3) *end for ICSD #99836 這組數(shù)據(jù)呢? |

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