data_2000777
_journal_name_full  'Acta Cryst.'
_journal_year  1992
_journal_volume  C48
_journal_page_first  1299
_journal_page_last  1301
loop_
_publ_author_name
 'Janczak, J.'
 'Kubiak, R.'
_chemical_formula_sum  'Ba1 Cu1 O10 Si4'
_chemical_formula_weight  473.2
_symmetry_cell_setting  tetragonal
_symmetry_space_group_name_H-M  'P 4/n c c {origin @ -4/n c n}'
_symmetry_space_group_name_Hall  'P -4 2 -1n'
_cell_length_a  7.4470(10)
_cell_length_b  7.4470(10)
_cell_length_c  16.138(2)
_cell_angle_alpha  90.
_cell_angle_beta  90.
_cell_angle_gamma  90.
_cell_volume  895.0(2)
_cell_formula_units_Z  4
_exptl_crystal_density_diffrn  3.512
_exptl_crystal_density_meas  ?
_exptl_crystal_F_000  884
_exptl_absorpt_coefficient_mu  7.198
_diffrn_radiation_type  Mo
_diffrn_radiation_wavelength  0.71073
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
 Ba .0 .0 .0 .01000(10)
 Cu .0 .5 .09440(10)
       .0077(3)
 Si .26810(10)
    .18870(10)
       .15460(10)
          .0073(4)
 O(1) .2261(5) .2261(5) .25 .0310(8)
 O(2) .4736(4) .2484(5) .1366(2) .0160(7)
 O(3) .1367(4) .2818(4) .0908(2) .0157(7)