data_1010710
_chemical_name_systematic          'Dodecatungstosilicic acid hydrate'
_chemical_formula_structural       'H4 Si W12 O40 (H2 O)14'
_chemical_formula_sum              'H32 O54 Si W12'
_publ_section_title
;
Kristallographische und roentgenographische Untersuchungen an einer
neuen Hydratgruppe der 12-Heteropolysaeuren
;
_publ_author_name                  'Kraus, O'
_journal_name_full
;
Zeitschrift fuer Kristallographie, Kristallgeometrie, Kristallphysik,
Kristallchemie (-144,1977)
;
_journal_coden_ASTM                ZEKGAX
_journal_volume                    100
_journal_year                      1939
_journal_page_first                394
_journal_page_last                 413
_cell_length_a                     20.47
_cell_length_b                     19.38
_cell_length_c                     22.4
_cell_angle_alpha                  95.6
_cell_angle_beta                   94.72
_cell_angle_gamma                  90.94
_cell_volume                       8811.2
_cell_formula_units_Z              8
_exptl_crystal_density_meas        4.78
_symmetry_space_group_name_H-M     'P -1'
_symmetry_Int_Tables_number        2
_symmetry_cell_setting             triclinic
loop_
_symmetry_equiv_pos_as_xyz
  'x,y,z'
  '-x,-y,-z'