/usr/share/avogadro/crystals/zeolites/BRE.cif is in avogadro-data 1.2.0-3.
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#**************************************************************************
#
# CIF taken from the IZA-SC Database of Zeolite Structures
# Ch. Baerlocher and L.B. McCusker
# Database of Zeolite Structures: http://www.iza-structure.org/databases/
#
# All data on this site have been placed in the public domain.
# If you use this work in a scientific publication, you are obligated to
# cite its origin.
#
# The atom coordinates and the cell parameters were optimized with DLS76
# assuming a pure SiO2 composition.
#
#**************************************************************************
_cell_length_a 6.7600(0)
_cell_length_b 17.0930(0)
_cell_length_c 7.6030(0)
_cell_angle_alpha 90.0000(0)
_cell_angle_beta 95.8270(0)
_cell_angle_gamma 90.0000(0)
_symmetry_space_group_name_H-M 'P 21/m'
_symmetry_Int_Tables_number 11
_symmetry_cell_setting monoclinic
loop_
_symmetry_equiv_pos_as_xyz
'+x,+y,+z'
'-x,1/2+y,-z'
'-x,-y,-z'
'+x,1/2-y,+z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
O1 O 0.3807 0.1011 0.0303
O2 O 0.0981 0.0951 0.7660
O3 O 0.4051 0.0003 0.7723
O4 O 0.4506 0.1505 0.7148
O5 O 0.2059 0.0002 0.2248
O6 O 0.4169 0.1155 0.3765
O7 O 0.7700 0.1194 0.5567
O8 O 0.5730 0.2500 0.4848
O9 O 0.0000 0.0000 0.5000
T1 Si 0.3336 0.0868 0.8209
T2 Si 0.3997 0.0542 0.2150
T3 Si 0.5527 0.1589 0.5333
T4 Si 0.9155 0.0535 0.6493
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