data_global _amcsd_formula_title 'Cl2' loop_ _publ_author_name 'Keesom W' 'Taconis K' _journal_name_full 'Physica' _journal_volume 3 _journal_year 1936 _journal_page_first 237 _journal_page_last 242 _publ_section_title ; On the crystal structure of chlorine _cod_database_code 1010328 ; _database_code_amcsd 0017254 _chemical_formula_sum 'Cl' _cell_length_a 8.56 _cell_length_b 8.56 _cell_length_c 6.12 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 448.434 _exptl_crystal_density_diffrn 2.100 _symmetry_space_group_name_H-M 'P 42/n c m' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2-y,1/2-x,z' 'y,x,1/2-z' 'y,-x,-z' '1/2-y,1/2+x,1/2+z' 'x,-y,1/2+z' '1/2-x,1/2+y,-z' '1/2+x,1/2+y,1/2-z' '-x,-y,z' '1/2+y,1/2+x,z' '-y,-x,1/2-z' '-y,x,-z' '1/2+y,1/2-x,1/2+z' '-x,y,1/2+z' '1/2+x,1/2-y,-z' '1/2-x,1/2-y,1/2-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Cl1 0.12500 0.16700 0.10700