#------------------------------------------------------------------------------ #$Date: 2024-05-06 08:39:41 +0100 (Mon, 06 May 2024) $ #$Revision: 291735 $ #$URL: svn://www.crystallography.net/cod/cif/9/00/98/9009854.cif $ #------------------------------------------------------------------------------ # # This file is available in the Crystallography Open Database (COD), # http://www.crystallography.net/. The original data for this entry # were provided the American Mineralogist Crystal Structure Database, # http://rruff.geo.arizona.edu/AMS/amcsd.php # # The file may be used within the scientific community so long as # proper attribution is given to the journal article from which the # data were obtained. # data_9009854 loop_ _publ_author_name 'Heyding, R. D.' 'Murray, R. M.' _publ_section_title ;Crystal structures of Cu1.8Se, Cu3Se2, alpha- and gamma-CuSe, CuSe2, and CuSe2II Note: high-pressure polymorph, pyrite structure ; _journal_name_full 'Canadian Journal of Chemistry' _journal_page_first 841 _journal_page_last 848 _journal_paper_doi 10.1139/v76-122 _journal_volume 54 _journal_year 1976 _chemical_formula_structural CuSe2 _chemical_formula_sum 'Cu Se2' _chemical_name_mineral Krutaite _space_group_IT_number 205 _symmetry_space_group_name_Hall '-P 2ac 2ab 3' _symmetry_space_group_name_H-M 'P a -3' _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_length_a 6.116 _cell_length_b 6.116 _cell_length_c 6.116 _cell_formula_units_Z 4 _cell_volume 228.772 _database_code_amcsd 0012162 _exptl_crystal_density_diffrn 6.430 _cod_original_sg_symbol_H-M 'P a 3' _cod_database_code 9009854 loop_ _space_group_symop_operation_xyz x,y,z 1/2+z,x,1/2-y z,1/2-x,1/2+y 1/2-z,1/2+x,y -z,-x,-y 1/2+y,1/2-z,-x 1/2-y,-z,1/2+x -y,1/2+z,1/2-x y,z,x x,1/2-y,1/2+z 1/2-x,1/2+y,z 1/2+x,y,1/2-z -x,-y,-z 1/2-z,-x,1/2+y -z,1/2+x,1/2-y 1/2+z,1/2-x,-y z,x,y 1/2-y,1/2+z,x 1/2+y,z,1/2-x y,1/2-z,1/2+x -y,-z,-x -x,1/2+y,1/2-z 1/2+x,1/2-y,-z 1/2-x,-y,1/2+z loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Cu 0.00000 0.00000 0.00000 0.03040 Se 0.38910 0.38910 0.38910 0.02026 loop_ _cod_related_entry_id _cod_related_entry_database _cod_related_entry_code 1 AMCSD 0012162