/usr/share/avogadro/crystals/zeolites/MTW.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 25.5520(0)
_cell_length_b 5.2560(0)
_cell_length_c 12.1170(0)
_cell_angle_alpha 90.0000(0)
_cell_angle_beta 109.3120(0)
_cell_angle_gamma 90.0000(0)
_symmetry_space_group_name_H-M 'C 2/m'
_symmetry_Int_Tables_number 12
_symmetry_cell_setting monoclinic
loop_
_symmetry_equiv_pos_as_xyz
'+x,+y,+z'
'1/2+x,1/2+y,+z'
'-x,+y,-z'
'1/2-x,1/2+y,-z'
'-x,-y,-z'
'1/2-x,1/2-y,-z'
'+x,-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 0.0045 0.0000 0.1313
O2 O 0.0958 0.7501 0.2421
O3 O 0.0876 0.0000 0.0490
O4 O 0.0826 0.2500 0.8576
O5 O 0.3440 0.0000 0.5710
O6 O 0.3153 0.0000 0.7595
O7 O 0.3434 0.0000 0.2079
O8 O 0.3374 0.0000 0.9870
O9 O 0.2508 0.7499 0.8515
O10 O 0.2838 0.0000 0.3478
O11 O 0.2500 0.7500 0.5000
T1 Si 0.0710 0.0000 0.1660
T2 Si 0.0621 0.0000 0.9083
T3 Si 0.3671 0.0000 0.7119
T4 Si 0.3789 0.0000 0.1199
T5 Si 0.2885 0.0000 0.8625
T6 Si 0.2813 0.0000 0.2134
T7 Si 0.2818 0.0000 0.4791
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