data_9009991
_publ_section_title
;
 Phase transitions in proustite I. Structural studies
 Sample: T = 35 K
;
_journal_name_full               'Phase Transition'
_journal_page_first              1
_journal_page_last               24
_journal_paper_doi               10.1080/01411598508219887
_journal_volume                  6
_journal_year                    1985
_chemical_formula_sum            'Ag3 As S3'
_chemical_name_mineral           Proustite
_space_group_IT_number           161
_symmetry_space_group_name_Hall  'R 3 -2"c'
_symmetry_space_group_name_H-M   'R 3 c :H'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   10.767
_cell_length_b                   10.767
_cell_length_c                   8.713
_cell_volume                     874.758
_diffrn_ambient_temperature      35
_exptl_crystal_density_diffrn    5.635
_[local]_cod_cif_authors_sg_H-M  'R 3 c'
_cod_database_code               9009991
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,1/2+z
2/3+x,1/3+x-y,5/6+z
1/3+x,2/3+x-y,1/6+z
-y,-x,1/2+z
2/3-y,1/3-x,5/6+z
1/3-y,2/3-x,1/6+z
-x+y,y,1/2+z
2/3-x+y,1/3+y,5/6+z
1/3-x+y,2/3+y,1/6+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_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
Ag 0.03597 0.03977 0.02482 0.04116 0.01608 -0.00291
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
Ag 0.24830 0.29800 0.21940 0.03597
As 0.00000 0.00000 0.00000 0.01393
S 0.21290 0.09260 0.37430 0.02318
