/usr/share/avogadro/crystals/zeolites/SSY.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 5.2580(0)
_cell_length_b 22.5790(0)
_cell_length_c 13.9770(0)
_cell_angle_alpha 90.0000(0)
_cell_angle_beta 90.0000(0)
_cell_angle_gamma 90.0000(0)
_symmetry_space_group_name_H-M 'P m m n'
_symmetry_Int_Tables_number 59
_space_group.IT_coordinate_system_code '2'
_symmetry_cell_setting orthorhombic
loop_
_symmetry_equiv_pos_as_xyz
'+x,+y,+z'
'1/2-x,+y,+z'
'+x,1/2-y,+z'
'1/2-x,1/2-y,+z'
'-x,-y,-z'
'1/2+x,-y,-z'
'-x,1/2+y,-z'
'1/2+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 0.7500 0.8081 0.2104
O2 O 0.0000 0.7500 0.0774
O3 O 0.2500 0.6917 0.9448
O4 O 0.7500 0.6085 0.3407
O5 O 0.0000 0.5925 0.1803
O6 O 0.7500 0.5664 0.5176
O7 O 0.9999 0.5117 0.3801
O8 O 0.7500 0.4161 0.9815
O9 O 0.5000 0.3938 0.1401
O10 O 0.2500 0.4270 0.2930
O11 O 0.2500 0.4948 0.1393
T1 Si 0.7500 0.7500 0.1437
T2 Si 0.2500 0.7500 0.0111
T3 Si 0.7500 0.6214 0.2273
T4 Si 0.7500 0.5496 0.4057
T5 Si 0.7500 0.3780 0.0787
T6 Si 0.2500 0.4707 0.3840
T7 Si 0.2500 0.4276 0.1778
T8 Si 0.2500 0.5658 0.1299
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