data_global _chemical_name_mineral 'Tenorite' loop_ _publ_author_name 'Brese N E' 'O'Keeffe M' 'Ramakrishna B L' 'von Dreele R B' _journal_name_full 'Journal of Solid State Chemistry' _journal_volume 89 _journal_year 1990 _journal_page_first 184 _journal_page_last 190 _publ_section_title ; Low-temperature structures of CuO and AgO and their relationships to those of MgO and PdO Note: T = 11 K ; _database_code_amcsd 0018821 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Cu O' _cell_length_a 4.6833 _cell_length_b 3.4208 _cell_length_c 5.1294 _cell_angle_alpha 90 _cell_angle_beta 99.567 _cell_angle_gamma 90 _cell_volume 81.033 _exptl_crystal_density_diffrn 6.520 _symmetry_space_group_name_H-M 'C 1 2/c 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,z' 'x,-y,1/2+z' '1/2+x,1/2-y,1/2+z' '-x,y,1/2-z' '1/2-x,1/2+y,1/2-z' '-x,-y,-z' '1/2-x,1/2-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Cu 0.25000 0.25000 0.00000 0.00270 O 0.00000 0.41790 0.25000 0.00340 loop_ _atom_site_aniso_label _atom_site_aniso_U_11 _atom_site_aniso_U_22 _atom_site_aniso_U_33 _atom_site_aniso_U_12 _atom_site_aniso_U_13 _atom_site_aniso_U_23 Cu 0.00170 0.00420 0.00270 0.00110 0.00120 0.00020 O 0.00360 0.00560 0.00170 0.00000 0.00160 0.00000