data_global
_amcsd_formula_title 'Cu2 Nd O7 Sr2 Tl'
loop_
_publ_author_name
'Huve M'
'Martin C'
'Michel C'
'Maignan A'
'Hervieu M'
'Raveau B'
_journal_name_full 'Journal of Physics and Chemistry of Solids'
_journal_volume 54 
_journal_year 1993
_journal_page_first 145
_journal_page_last 152
_publ_section_title
;
 Influence of the size of alkaline earth cations on the structural
 distortion and transport properties of the semiconducting 1212 - type
 cuprates TlBa2-xSrxLnCu2O7
 _cod_database_code 1001524
;
_database_code_amcsd 0013239
_chemical_formula_sum 'Tl Sr2 Nd Cu2 O7'
_cell_length_a 3.8503
_cell_length_b 3.8503
_cell_length_c 12.0724
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 178.971
_exptl_crystal_density_diffrn      7.079
_symmetry_space_group_name_H-M 'P 4/m m m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-y,-x,z'
  'y,x,-z'
  'y,-x,-z'
  '-y,x,z'
  'x,-y,z'
  '-x,y,-z'
  'x,y,-z'
  '-x,-y,z'
  'y,x,z'
  '-y,-x,-z'
  '-y,x,-z'
  'y,-x,z'
  '-x,y,z'
  'x,-y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Tl1   0.06900   0.00000   0.00000   0.25000
Sr1   0.50000   0.50000   0.20920   1.00000
Nd1   0.50000   0.50000   0.50000   1.00000
Cu1   0.00000   0.00000   0.35810   1.00000
O1   0.00000   0.50000   0.36600   1.00000
O2   0.00000   0.00000   0.17600   1.00000
O3   0.50000   0.50000   0.00000   1.00000