data_global _chemical_name_mineral 'Chromium' loop_ _publ_author_name 'Kimoto K' 'Nishida I' _journal_name_full 'Journal of the Physical Society of Japan' _journal_volume 22 _journal_year 1967 _journal_page_first 744 _journal_page_last 756 _publ_section_title ; An electron diffraction study on the crystal structure of a new modification of chromium ; _database_code_amcsd 0014168 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Cr4' _cell_length_a 4.588 _cell_length_b 4.588 _cell_length_c 4.588 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 96.576 _exptl_crystal_density_diffrn 7.152 _symmetry_space_group_name_H-M 'P m 3' loop_ _space_group_symop_operation_xyz 'x,y,z' 'z,x,-y' 'z,-x,y' '-z,x,y' '-z,-x,-y' 'y,-z,-x' '-y,-z,x' '-y,z,-x' 'y,z,x' 'x,-y,z' '-x,y,z' 'x,y,-z' '-x,-y,-z' '-z,-x,y' '-z,x,-y' 'z,-x,-y' 'z,x,y' '-y,z,x' 'y,z,-x' 'y,-z,x' '-y,-z,-x' '-x,y,-z' 'x,-y,-z' '-x,-y,z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy Cr1 0.00000 0.00000 0.00000 1.00000 Cr2 0.50000 0.50000 0.50000 1.00000 Cr3 0.24800 0.04000 0.51000 0.25000