data_global
#==============================================================================

# PROCESSING SUMMARY (IUCr Office Use Only)

_journal_date_recd_electronic      ?
_journal_date_to_coeditor         ?
_journal_date_from_coeditor       ?
_journal_date_accepted     ?
_journal_date_printers_first      ?
_journal_date_printers_final      ?
_journal_date_proofs_out          ?
_journal_date_proofs_in           ?
_journal_coeditor_name            ?
_journal_coeditor_code      ?
_journal_coeditor_notes
; ?
;
_journal_paper_category      ?
_journal_techeditor_code      ?
_iucr_compatibility_tag          ACTA95
_journal_techeditor_notes  
;
;
_journal_coden_ASTM               ?
_journal_name_full                ?
_journal_year                     ?
_journal_volume                   ?
_journal_issue                    ?
_journal_page_first               ?
_journal_page_last                ?
_journal_suppl_publ_number        ?
_journal_suppl_publ_pages         ?

#==============================================================================

_chemical_name_mineral 'Mg perchlorate dihydrate'
_cell_length_a  14.38396(50)
_cell_length_b  5.21789(15)
_cell_length_c  5.43668(19)
_cell_angle_alpha 90
_cell_angle_beta  108.2076(17)
_cell_angle_gamma 90
_cell_volume 387.614(23)
_symmetry_space_group_name_H-M C2
loop_
_symmetry_equiv_pos_as_xyz
 '-x, y, -z'
 '-x+1/2, y+1/2, -z'
 'x, y, z'
 'x+1/2, y+1/2, z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_symmetry_multiplicity
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_B_iso_or_equiv
Mg Mg+2   2 0 -0.01864 0.5 1 0.8
Cl1 Cl-1   4 0.62578 0.97503 0.83043 1 0.4
O1 O-2   4 0.38167 0.51574 0.64837 1 1.2
O2 O-2   4 0.32043 1.00791 0.89 1 1.2
O3 O-2   4 0.05762 0.25564 0.79317 1 1.2
O4 O-2   4 0.31265 0.96112 0.34525 1 1.2
O5 O-2   4 0.43874 0.20176 0.21606 1 1.2