data_global _chemical_name_mineral 'Clinoatacamite' loop_ _publ_author_name 'Wills A S' 'Henry J Y' _journal_name_full 'Journal of Physics: Condensed Matter' _journal_volume 20 _journal_year 2008 _journal_page_first 472206 _journal_page_last 8 _publ_section_title ; On the crystal and magnetic ordering structures of clinoatacamite, gamma-Cu2(OD)3Cl, a proposed valence bond solid ; _database_code_amcsd 0017751 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Cu2 O3 D3 Cl' _cell_length_a 6.15175 _cell_length_b 6.81606 _cell_length_c 9.10541 _cell_angle_alpha 90 _cell_angle_beta 99.8394 _cell_angle_gamma 90 _cell_volume 376.180 _exptl_crystal_density_diffrn 3.824 _symmetry_space_group_name_H-M 'P 1 21/n 1' 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' '-x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_U_iso_or_equiv Cu1 0.24130 0.76560 0.25141 0.01182 Cu2 0.50000 0.00000 0.00000 0.01182 Cu3 0.00000 0.00000 0.00000 0.01182 O1 0.07940 0.01920 0.22345 0.01248 O2 0.25900 0.82040 0.03972 0.01248 O3 0.30970 0.20920 0.04964 0.01248 D1 0.72018 0.68540 0.02134 0.02280 D2 0.76153 0.29200 0.02739 0.02280 D3 0.55273 0.52200 0.23068 0.02280 Cl 0.61199 0.99559 0.30733 0.01248