data_global _chemical_name_mineral 'Bearsite' loop_ _publ_author_name 'Harrison W T A' 'Nenoff T M' 'Gier T E' 'Stucky G D' _journal_name_full 'Inorganic Chemistry' _journal_volume 32 _journal_year 1993 _journal_page_first 2437 _journal_page_last 2441 _publ_section_title ; Tetrahedral-atom 3-ring groupings in 1-dimensional inorganic chains: Be2AsO4OH*4H2O and Na2ZnPO4OH*7H2O ; _database_code_amcsd 0012708 _chemical_compound_source 'Synthetic' _chemical_formula_sum 'Be2 As O9 H9' _cell_length_a 7.2349 _cell_length_b 12.686 _cell_length_c 8.6548 _cell_angle_alpha 90 _cell_angle_beta 98.439 _cell_angle_gamma 90 _cell_volume 785.754 _exptl_crystal_density_diffrn 2.080 _symmetry_space_group_name_H-M 'P 1 21/a 1' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2-y,z' '1/2-x,1/2+y,-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 Be1 0.62270 0.12240 0.35900 0.01630 Be2 0.85080 0.12650 0.11070 0.01700 As 0.23796 0.17406 0.24214 0.01210 O1 0.82510 0.25450 0.10700 0.01720 O2 0.40170 0.09230 0.33420 0.01590 O3 0.06970 0.09280 0.15460 0.01570 O4 0.65680 0.24880 0.37410 0.01740 O-H5 0.72000 0.07330 0.22160 0.02340 Wat6 0.70960 0.07780 0.53350 0.02650 Wat7 0.79050 0.08830 -0.07310 0.02330 Wat8 0.41580 0.15020 0.83310 0.03550 Wat9 0.03070 0.18100 0.64450 0.03370