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sobergod金蟲 (正式寫手)
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[求助]
請(qǐng)問(wèn)Gamma 氧化鋁的點(diǎn)群是什么?不是要空間群! 已有1人參與
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大家好,本人需要使用一個(gè)晶體軟件,需要輸入Gamma 氧化鋁的點(diǎn)群信心,但是在ICSD中僅僅查到空間群,沒(méi)有點(diǎn)群信息。我對(duì)這兩個(gè)概念不是很明白,肯定高手能幫我找到Gamma 氧化鋁的點(diǎn)群信息Sample Text,非常感謝! *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 < 0.997 resp. SOF > 1.003) Neutron diffraction (powder) The structure has been assigned a PDF number (calculated powder diffraction data): 01-079-1558 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 #66559 |
鐵桿木蟲 (著名寫手)

金蟲 (正式寫手)
金蟲 (正式寫手)
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