data_9009239 _chemical_name 'NiS' loop_ _publ_author_name 'Trahan J' 'Goodrich R G' 'Watkins S F' _journal_name_full "Physical Review B" _journal_volume 2 _journal_year 1970 _journal_page_first 2859 _journal_page_last 2863 _publ_section_title ; X-ray diffraction measurements on metallic and semiconducting hexagonal NiS Note: T = 77 K ; _chemical_formula_sum 'Ni S' _cell_length_a 3.4456 _cell_length_b 3.4456 _cell_length_c 5.405 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 120 _cell_volume 55.572 _symmetry_space_group_name_H-M 'P 63 m c' loop_ _symmetry_equiv_pos_as_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 Ni 0.00000 0.00000 0.00000 S 0.33333 0.66667 0.27500