data_2000776
_journal_name_full  'Acta Cryst.'
_journal_year  1992
_journal_volume  C48
_journal_page_first  1297
_journal_page_last  1299
loop_
_publ_author_name
 'Lin, H.C.'
 'Liao, F.L.'
 'Wang, S.L.'
_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  7.440(2)
_cell_length_b  7.440(2)
_cell_length_c  16.097(6)
_cell_angle_alpha  90.
_cell_angle_beta  90.
_cell_angle_gamma  90.
_cell_volume  891.2(4)
_cell_formula_units_Z  4
_exptl_crystal_density_diffrn  3.527
_exptl_crystal_density_meas  ?
_exptl_crystal_F_000  884
_exptl_absorpt_coefficient_mu  7.359
_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
 Cu .7500 -.2500 -.09440(10)
         .0090(10)
 Ba .7500 .2500 .0 .0120(10)
 Si .9822(2) -.0618(2) .15430(10)
           .0090(10)
 O(1) .7763(5) -.0007(5) .1365(2) .0160(10)
 O(2) .0247(6) .9753(6) .2500 .031(2)
 O(3) .4688(5) .1130(5) .0909(3) .031(2)