data_global _amcsd_formula_title 'Cr.63Fe.37As2' loop_ _publ_author_name 'Kjekshus A' 'Peterzens P G' 'Rakke T' 'Andresen A F' _journal_name_full 'Acta Chemica Scandinavica' _journal_volume A33 _journal_year 1979 _journal_page_first 469 _journal_page_last 480 _publ_section_title ; Compounds with the marcasite type crystal structure. XIII. Structural and magnetic properties of CrtFe1-tAs2, CrtFe1-tSb2, Fe1-tNitAs2 and Fe1-tNitSb2 ; _database_code_amcsd 0011951 _chemical_formula_sum '(Fe.37 Ni.63) As2' _cell_length_a 5.3971 _cell_length_b 6.1893 _cell_length_c 2.9539 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 98.673 _exptl_crystal_density_diffrn 6.983 _symmetry_space_group_name_H-M 'P n n m' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,1/2+z' '1/2-x,1/2+y,1/2-z' '1/2-x,1/2+y,1/2+z' '1/2+x,1/2-y,1/2-z' '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 Fe 0.00000 0.00000 0.00000 0.37000 Ni 0.00000 0.00000 0.00000 0.63000 As 0.17060 0.36810 0.00000 1.00000