data_9009651
_chemical_name 'Arsenic'
loop_
_publ_author_name
'Schiferl D'
'Barrett CS'
_journal_name_full "Journal of Applied Crystallography"
_journal_volume 2
_journal_year 1969
_journal_page_first 30
_journal_page_last 36
_publ_section_title
;
 The crystal structure of arsenic at 4.2, 78 and 299 K
 Sample: T = 78 K
;
_chemical_formula_sum 'As'
_cell_length_a 3.7595
_cell_length_b 3.7595
_cell_length_c 10.4573
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 128.000
_symmetry_space_group_name_H-M 'R 3 m'
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '2/3+x,1/3+y,1/3+z'
  '1/3+x,2/3+y,2/3+z'
  'x,x-y,z'
  '2/3+x,1/3+x-y,1/3+z'
  '1/3+x,2/3+x-y,2/3+z'
  '-y,-x,z'
  '2/3-y,1/3-x,1/3+z'
  '1/3-y,2/3-x,2/3+z'
  '-x+y,y,z'
  '2/3-x+y,1/3+y,1/3+z'
  '1/3-x+y,2/3+y,2/3+z'
  '-y,x-y,z'
  '2/3-y,1/3+x-y,1/3+z'
  '1/3-y,2/3+x-y,2/3+z'
  '-x+y,-x,z'
  '2/3-x+y,1/3-x,1/3+z'
  '1/3-x+y,2/3-x,2/3+z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_Uiso_or_equiv
As   0.00000   0.00000   0.22754   0.00407