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B4C
¡ï ¡ï ¡ï
µÛ·ò(½ð±Ò+3):¸Ðл»ØÌû½»Á÷~ 2010-04-29 10:24
attdey(½ð±Ò+10):ллÁË ÄܸæËßÎÒÄãÊÇÔõô²éµ½µÄÂ𠣿 2010-04-29 20:05
µÛ·ò(½ð±Ò+3):¸Ðл»ØÌû½»Á÷~ 2010-04-29 10:24
attdey(½ð±Ò+10):ллÁË ÄܸæËßÎÒÄãÊÇÔõô²éµ½µÄÂ𠣿 2010-04-29 20:05
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*data for ICSD #29093 Coll Code 29093 Rec Date 1980/01/01 Mod Date 2007/04/01 Chem Name Boron(I) Carbide Structured B4 C Sum C1 B4 ANX A4X D(calc) 2.5 Title The crystal structure of boron carbide Author(s) Clark, H.K.;Hoard, J.L. Reference Journal of the American Chemical Society (1943), 65, 2115-2119 Zhurnal Fizicheskoi Khimii (1943), 17, 326-335 Unit Cell 5.61 5.61 12.14 90. 90. 120. Vol 330.88 Z 9 Space Group R -3 m H SG Number 166 Cryst Sys trigonal/rhombohedral Pearson hR15 Wyckoff h2 c b Red Cell RH 5.183 5.183 5.183 65.525 65.525 65.525 110.294 Trans Red 0.333 -0.333 -0.333 / -0.667 -0.333 -0.333 / 0.333 0.667 -0.333 Comments Cell from 2nd reference: 5.63, 12.14, z(B1) was given as .36, cf, 23923 AE: B1: B4 C54; B2: B5 C; Ca: B6 C2; C2: B6 C The structure has been assigned a PDF number (calculated powder diffraction data): 01-075-0424 The structure has been assigned a PDF number (experimental powder diffraction data): 35-798 Structure type prototype : B4C Structure type : B4C X-ray diffraction from single crystal No R value given in the paper. At least one temperature factor missing in the paper. Atom # OX SITE x y z SOF H B 1 +1 18 h 0.1667 -.1667 0.26 1. 0 B 2 +1 18 h 0.106 -.106 0.113 1. 0 C 1 -4 6 c 0 0 0.385 1. 0 C 2 -4 3 b 0 0 0.5 1. 0 *end for ICSD #29093 |
2Â¥2010-04-29 10:19:12
zbdfwq5777
ľ³æÖ®Íõ (ÎÄѧ̩¶·)
ÖÁ×ðɽÑò
- CMEI: 3
- Ó¦Öú: 820 (²©ºó)
- ¹ó±ö: 0.902
- ½ð±Ò: 166542
- É¢½ð: 6682
- ºì»¨: 141
- ɳ·¢: 435
- Ìû×Ó: 126445
- ÔÚÏß: 7408.7Сʱ
- ³æºÅ: 664055
- ×¢²á: 2008-11-29
- רҵ: Ãô¸Ðµç×ÓѧÓë´«¸ÐÆ÷
¡ï ¡ï ¡ï
µÛ·ò(½ð±Ò+3):¸Ðл»ØÌû½»Á÷~ 2010-04-29 10:24
µÛ·ò(½ð±Ò+3):¸Ðл»ØÌû½»Á÷~ 2010-04-29 10:24
3Â¥2010-04-29 10:19:52









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