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luke1989

铁虫 (初入文坛)

[交流] 【求助】硫化铬space group

想做个硫化铬的模拟,用MS的,不知道它的晶体参数space group,请教大家这个怎么弄的?还有就是我下了个ICSD结果告诉我“you don't have any vaild keys ”
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rfvuhb

铜虫 (小有名气)

★ ★ ★
小木虫(金币+0.5):给个红包,谢谢回帖交流
aylayl08(金币+2,VIP+0):谢谢提供信息 1-4 18:50
1)3.836 3.836 6.277 90 90 120 P6_3mc; CIF  文件如下:

data_global
_chemical_name_mineral 'Wurtzite-2H'
loop_
_publ_author_name
'Ulrich F'
'Zachariasen W H'
_journal_name_full 'Zeitschrift fur Kristallographie'
_journal_volume 62
_journal_year 1925
_journal_page_first 260
_journal_page_last 273
_publ_section_title
;
Ueber die kristallstruktur des alpha- und beta-CdS, sowie des wurtzits
Locality: synthetic
;
_chemical_formula_sum 'Zn S'
_cell_length_a 3.836
_cell_length_b 3.836
_cell_length_c 6.277
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 79.991
_exptl_crystal_density_diffrn      4.046
_symmetry_space_group_name_H-M 'P 63 m c'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '-x,-x+y,1/2+z'
  'x-y,x,1/2+z'
  '-y,-x,z'
  '-y,x-y,z'
  'x-y,-y,1/2+z'
  '-x,-y,1/2+z'
  'x,x-y,z'
  '-x+y,-x,z'
  'y,x,1/2+z'
  'y,-x+y,1/2+z'
  '-x+y,y,z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Zn   0.33333   0.66667   0.00000
S   0.33333   0.66667   0.37500

2)6.471 8.253 8.526 90 90 90 Pbca; CIF  文件如下:
data_global
_chemical_name_mineral 'CdSb'
loop_
_publ_author_name
'Wyckoff R W G'
_journal_name_full 'Crystal Structures'
_journal_volume 1
_journal_year 1963
_journal_page_first 85
_journal_page_last 237
_publ_section_title
;
Second edition. Interscience Publishers, New York, New York
;
_chemical_formula_sum 'Cd Sb'
_cell_length_a 6.471
_cell_length_b 8.253
_cell_length_c 8.526
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 455.332
_exptl_crystal_density_diffrn      6.832
_symmetry_space_group_name_H-M 'P b c a'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  'x,1/2-y,1/2+z'
  '-x,1/2+y,1/2-z'
  '1/2-x,1/2+y,z'
  '1/2+x,1/2-y,-z'
  '1/2+x,y,1/2-z'
  '1/2-x,-y,1/2+z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Cd   0.45600   0.11900  -0.12800
Sb   0.13600   0.07200   0.10800
2楼2010-01-04 15:32:47
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luke1989

铁虫 (初入文坛)

引用回帖:
Originally posted by rfvuhb at 2010-1-4 15:32:
1)3.836 3.836 6.277 90 90 120 P6_3mc; CIF  文件如下:

data_global
_chemical_name_mineral 'Wurtzite-2H'
loop_
_publ_author_name
'Ulrich F'
'Zachariasen W H'
_journal_name_full 'Zeitschrif ...

谢谢!
3楼2010-01-04 16:00:28
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