data_global _amcsd_formula_title 'Cl4 Rb2 Zn' loop_ _publ_author_name 'Hedoux A' 'Grebille D' 'Jaud J' 'Godefroy G' _journal_name_full 'Acta Crystallographica, Section B' _journal_volume 45 _journal_year 1989 _journal_page_first 370 _journal_page_last 378 _publ_section_title ; Structural study of the incommensurate and lock-in phases of Rb2ZnCl4 _cod_database_code 1001389 ; _database_code_amcsd 0009830 _chemical_formula_sum 'Rb2 Zn Cl4' _cell_length_a 7.230 _cell_length_b 12.608 _cell_length_c 9.199 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 838.543 _exptl_crystal_density_diffrn 2.995 _symmetry_space_group_name_H-M 'P 21 c n' loop_ _space_group_symop_operation_xyz 'x,y,z' 'x,1/2-y,1/2+z' '1/2+x,1/2+y,1/2-z' '1/2+x,-y,-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z Rb1 0.25000 0.40670 0.62980 Rb2 0.25000 0.81960 0.48620 Zn1 0.25000 0.42170 0.22400 Cl1 0.25000 0.41890 -0.01750 Cl2 0.25000 0.58510 0.32040 Cl3 0.00100 0.34100 0.31390 Cl4 0.49900 0.34100 0.31390