data_global _amcsd_formula_title 'Co2As' loop_ _publ_author_name 'Artigas M' 'Bacmann M' 'Fruchart D' 'Fruchart R' 'Soubeyroux J' 'Wolfers P' _journal_name_full 'Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences' _journal_volume 313 _journal_year 1991 _journal_page_first 635 _journal_page_last 640 _publ_section_title ; Analyse comparative des modifications structurales alpha et beta de Co2As _cod_database_code 1008517 ; _database_code_amcsd 0016410 _chemical_formula_sum 'Co2 As' _cell_length_a 11.9867 _cell_length_b 11.9867 _cell_length_c 3.5875 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 446.398 _exptl_crystal_density_diffrn 8.606 _symmetry_space_group_name_H-M 'P -6 2 m' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-x+y,z' '-x+y,-x,-z' 'y,x,-z' '-y,x-y,z' 'x-y,-y,z' 'x,y,-z' '-x,-x+y,-z' '-x+y,-x,z' 'y,x,z' '-y,x-y,-z' 'x-y,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Co1 0.29900 0.00000 0.00000 Co2 0.80300 0.00000 0.00000 Co3 0.17030 0.53950 0.50000 Co4 0.12400 0.00000 0.50000 Co5 0.63100 0.00000 0.50000 Co6 0.17440 0.70990 0.00000 As1 0.00000 0.00000 0.00000 As2 0.50290 0.00000 0.00000 As3 0.33720 0.16020 0.50000 As4 0.33333 0.66667 0.00000