data_global _amcsd_formula_title 'Hg N2' loop_ _publ_author_name 'Hassel O' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 64 _journal_year 1926 _journal_page_first 218 _journal_page_last 223 _publ_section_title ; Roentgenographische Untersuchung des tetragonal kristallisierenden Quecksilberzyanids. _cod_database_code 1010499 ; _database_code_amcsd 0017415 _chemical_formula_sum 'Hg' _cell_length_a 9.67 _cell_length_b 9.67 _cell_length_c 8.92 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 834.099 _exptl_crystal_density_diffrn 6.389 _symmetry_space_group_name_H-M 'I -4 2 d' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' '1/2-y,-x,3/4+z' '-y,1/2-x,1/4+z' 'y,-x,-z' '1/2+y,1/2-x,1/2-z' '-x,1/2+y,1/4-z' '1/2-x,+y,3/4-z' '-x,-y,z' '1/2-x,1/2-y,1/2+z' '1/2+y,x,3/4+z' '+y,1/2+x,1/4+z' '-y,x,-z' '1/2-y,1/2+x,1/2-z' 'x,1/2-y,1/4-z' '1/2+x,-y,3/4-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Hg1 0.25000 0.21000 0.12500