data_global _amcsd_formula_title 'BN' loop_ _publ_author_name 'Xu Y N' 'Ching W Y' _journal_name_full 'Physical Review' _journal_volume B48 _journal_year 1993 _journal_page_first 4335 _journal_page_last 4351 _publ_section_title ; Electronic, optical, and structural properties of some wurtzite crystals ; _database_code_amcsd 0015174 _chemical_formula_sum 'B N' _cell_length_a 2.536 _cell_length_b 2.536 _cell_length_c 4.199 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 23.387 _exptl_crystal_density_diffrn 3.524 _symmetry_space_group_name_H-M 'P 63 m c' loop_ _space_group_symop_operation_xyz 'x,y,z' '-x,-x+y,1/2+z' 'x-y,x,1/2+z' '-y,-x,z' '-y,x-y,z' 'x-y,-y,1/2+z' '-x,-y,1/2+z' 'x,x-y,z' '-x+y,-x,z' 'y,x,1/2+z' 'y,-x+y,1/2+z' '-x+y,y,z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z B 0.66667 0.33333 0.00000 N 0.66667 0.33333 0.37500