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ÈçÏÂÊÇÎÒ×Ô¼º´ÓFindIt-[ICSD 1]Öеõ½µÄËÄ·½¾§ÐÍBi2O2CO3µÄ¾§°û²ÎÊý£¬×ö³öµÄ³¬¾§°û½á¹¹Í¼Èçͼ1Ëùʾ£¬µ«ÎÄÏ×Öб¨µÀµÄÊÇÈçͼ2ËùʾµÄ³¬¾§°û½á¹¹Í¼£¬²»ÖªµÀÊÇÎÒµÄ×÷ͼ·½·¨ÓÐÎ󣬻¹ÊÇÈçÏÂÎÒ×Ô¼º×÷ͼµÄ¾§°û²ÎÊýÓÐÎó£¿Çë³æ×Ó¸ßÊÖÃǽ̽ÌÎÒÕýÈ·µÄ×÷ͼ·½·¨»ò´ÍÓèÎÒÕýÈ·µÄËÄ·½¾§ÐÍBi2O2CO3µÄ¾§°û²ÎÊý£¬°ÝÍÐÁË£¬Íò·Ö¸Ðл£¡
Chem Name   Bismuth Dioxide Carbonate
Structured  Bi2 O2 C O3
Sum         C1 Bi2 O5
ANX         AB2X5
Min Name    Bismutite
D(calc)     8.27
Title       On the crystal structure of Bi2 O2 C O3 (bismutite) and Ca Bi2 O2 (C
            O3)2 (beyerite)
Author(s)   Lagercrantz, A.;Sillen, L.G.
Reference   Arkiv foer Kemi, Mineralogi och Geologi, A
            (1948), 25(2), 1-21
Unit Cell   3.867 3.867 13.686 90. 90. 90.
Vol         204.66
Z           2
Space Group I 4/m m m
SG Number   139
Cryst Sys   tetragonal
Pearson     tI16
Wyckoff     m2 h e2 d b
Red Cell    I  3.867 3.867 7.369 105.211 105.211 89.999 102.328
Trans Red   1.000 0.000 0.000 / 0.000 -1.000 0.000 / -0.500 0.500 -0.500
Comments    O of CO3 split on 6 different positions
            Total SOF on at least one site differs from unity (SOF <
            0.997 resp. SOF > 1.003)
            Compound with mineral name: Bismutite
            The structure has been assigned a PDF number (calculated
            powder diffraction data): 01-073-6504
            The structure has been assigned a PDF number (experimental
            powder diffraction data): 41-1488
            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
Bi   1  +3    4 e   0           0           0.160(3)       1.         0   
O    1  -2    4 d   0           0.5         0.25           1.         0   
C    1  +4    2 b   0           0           0.5            1.         0   
O    2  -2    4 e   0           0           0.591          0.25       0   
O    3  -2    16 m  0.114       0.114       0.579          0.125      0   
O    4  -2    16 m  0.197       0.197       0.546          0.125      0   
O    5  -2    8 h   0.228       0.228       0.5            0.125      0   
*end for    ICSD #36245

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zh1987hs: ½ð±Ò+1, лл 2012-08-14 16:11:08
one cellͬÄã

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2Â¥2012-08-09 14:39:52
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ÒýÓûØÌû:
2Â¥: Originally posted by han456 at 2012-08-09 14:39:52
one cellͬÄã

3X3=9ͬÏÂ,ÔÙset Z=1,²ÅÊdz¬¾§¸ñ

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