#------------------------------------------------------------------------------
#$Date: 2008-01-13 22:15:36 +0000 (Sun, 13 Jan 2008) $
#$Revision: 14 $
#$URL: svn://www.crystallography.net/cod/cif/2/2202290.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/
#
# All data on this site have been placed in the public domain by the
# contributors.
#
data_2202290
_journal_name_full  'Acta Crystallographica, Section E'
_journal_year  2003
_journal_volume  59
_journal_page_first  i103
_journal_page_last  i104
_publ_section_title
;
The sesquiselenide Yb~2~Se~3~
;
loop_
_publ_author_name
  'Assoud, Abdeljalil'
  'Kleinke, Holger'
_chemical_formula_sum  'Se3 Yb2'
_chemical_formula_structural  'Yb2 Se3'
_chemical_formula_iupac  'Yb2 Se3'
_chemical_formula_weight  582.96
_symmetry_cell_setting  Orthorhombic
_symmetry_space_group_name_H-M  'F d d d'
_symmetry_space_group_name_Hall  '-F 2uv 2vw'
loop_
_symmetry_equiv_pos_as_xyz
  'x, y, z'
  '-x+3/4, -y+3/4, z'
  '-x+3/4, y, -z+3/4'
  'x, -y+3/4, -z+3/4'
  'x, y+1/2, z+1/2'
  '-x+3/4, -y+5/4, z+1/2'
  '-x+3/4, y+1/2, -z+5/4'
  'x, -y+5/4, -z+5/4'
  'x+1/2, y, z+1/2'
  '-x+5/4, -y+3/4, z+1/2'
  '-x+5/4, y, -z+5/4'
  'x+1/2, -y+3/4, -z+5/4'
  'x+1/2, y+1/2, z'
  '-x+5/4, -y+5/4, z'
  '-x+5/4, y+1/2, -z+3/4'
  'x+1/2, -y+5/4, -z+3/4'
  '-x, -y, -z'
  'x-3/4, y-3/4, -z'
  'x-3/4, -y, z-3/4'
  '-x, y-3/4, z-3/4'
  '-x, -y+1/2, -z+1/2'
  'x-3/4, y-1/4, -z+1/2'
  'x-3/4, -y+1/2, z-1/4'
  '-x, y-1/4, z-1/4'
  '-x+1/2, -y, -z+1/2'
  'x-1/4, y-3/4, -z+1/2'
  'x-1/4, -y, z-1/4'
  '-x+1/2, y-3/4, z-1/4'
  '-x+1/2, -y+1/2, -z'
  'x-1/4, y-1/4, -z'
  'x-1/4, -y+1/2, z-3/4'
  '-x+1/2, y-1/4, z-3/4'
_cell_length_a  8.0183(7)
_cell_length_b  11.2720(10)
_cell_length_c  23.961(2)
_cell_angle_alpha  90.00
_cell_angle_beta  90.00
_cell_angle_gamma  90.00
_cell_volume  2165.7(3)
_cell_formula_units_Z  16
_cell_measurement_temperature  298(2)
_exptl_crystal_density_diffrn  7.152
_diffrn_ambient_temperature  298(2)
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_calc_flag
_atom_site_refinement_flags
_atom_site_occupancy
_atom_site_disorder_assembly
_atom_site_disorder_group
_atom_site_type_symbol
  Yb1 0.1250 0.1250 0.041383(14) 0.00754(10) Uani d S 1 . . Yb
  Yb2 0.1250 0.1250 0.377464(14) 0.00745(10) Uani d S 1 . . Yb
  Se1 0.37062(10) 0.1250 0.1250 0.00751(16) Uani d S 1 . . Se
  Se2 0.38115(7) 0.12282(5) 0.45668(2) 0.00758(13) Uani d . 1 . . Se
loop_
_atom_site_aniso_label
_atom_site_aniso_U_11
_atom_site_aniso_U_22
_atom_site_aniso_U_33
_atom_site_aniso_U_12
_atom_site_aniso_U_13
_atom_site_aniso_U_23
  Yb1 0.00865(17) 0.00734(17) 0.00664(17) -0.00092(14) 0.000 0.000
  Yb2 0.00657(16) 0.00766(17) 0.00813(17) 0.00168(11) 0.000 0.000
  Se1 0.0078(4) 0.0058(3) 0.0090(4) 0.000 0.000 0.0001(3)
  Se2 0.0068(3) 0.0085(3) 0.0074(3) -0.0029(3) -0.00142(17) 0.00012(19)
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_site_symmetry_2
_geom_bond_distance
_geom_bond_publ_flag
  Yb1 Se2 25 2.7943(6) yes
  Yb1 Se2 26_565 2.7943(6) yes
  Yb1 Se1 . 2.8095(6) yes
  Yb1 Se1 14_445 2.8095(6) yes
  Yb1 Se2 9_454 2.8184(6) yes
  Yb1 Se2 6_544 2.8184(6) yes
  Yb2 Se2 . 2.7967(6) yes
  Yb2 Se2 14_445 2.7967(6) yes
  Yb2 Se2 16_445 2.8086(7) yes
  Yb2 Se2 3 2.8086(7) yes
  Yb2 Se1 25 2.8188(3) yes
  Yb2 Se1 26_565 2.8188(2) yes
  Se1 Yb1 11_454 2.8095(6) ?
  Se1 Yb2 25 2.8188(3) ?
  Se1 Yb2 23_655 2.8188(2) ?
  Se2 Yb1 25 2.7943(6) ?
  Se2 Yb2 3 2.8086(6) ?
  Se2 Yb1 9 2.8184(6) ?