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#$Date: 2023-03-24 18:37:27 +0200 (Fri, 24 Mar 2023) $
#$Revision: 282053 $
#$URL: file:///home/coder/svn-repositories/cod/cif/9/00/83/9008300.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided the American Mineralogist Crystal Structure Database,
# http://rruff.geo.arizona.edu/AMS/amcsd.php
#
# The file may be used within the scientific community so long as
# proper attribution is given to the journal article from which the
# data were obtained.
#
data_9008300
loop_
_publ_author_name
'Pertlik, F.'
_publ_section_title
;
 Structural investigations of synthetic fairchildite, K2Ca(CO3)2
 Note: y(O1) changed to satisfy symmetry constraints
;
_journal_name_full               'Zeitschrift fur Kristallographie'
_journal_page_first              199
_journal_page_last               205
_journal_volume                  157
_journal_year                    1981
_chemical_compound_source        Synthetic
_chemical_formula_sum            'C2 Ca K2 O6'
_chemical_name_mineral           Fairchildite
_space_group_IT_number           194
_symmetry_space_group_name_Hall  '-P 6c 2c'
_symmetry_space_group_name_H-M   'P 63/m m c'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_length_a                   5.294
_cell_length_b                   5.294
_cell_length_c                   13.355
_cell_volume                     324.147
_database_code_amcsd             0010845
_exptl_crystal_density_diffrn    2.441
_cod_original_formula_sum        'K2 Ca C2 O6'
_cod_database_code               9008300
loop_
_space_group_symop_operation_xyz
x,y,z
-x,-x+y,1/2+z
x,x-y,1/2-z
-x+y,-x,1/2-z
x-y,x,1/2+z
-y,-x,z
y,x,-z
y,-x+y,-z
-y,x-y,z
x-y,-y,1/2+z
-x+y,y,1/2-z
x,y,1/2-z
-x,-y,1/2+z
x,x-y,z
-x,-x+y,-z
x-y,x,-z
-x+y,-x,z
y,x,1/2+z
-y,-x,1/2-z
-y,x-y,1/2-z
y,-x+y,1/2+z
-x+y,y,z
x-y,-y,-z
-x,-y,-z
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
KMe1 0.01651 0.01661 0.02078 0.00825 0.00000 0.00000
CaMe2 0.02513 0.02513 0.01717 0.01257 0.00000 0.00000
C1 0.01459 0.01459 0.03434 0.00729 0.00000 0.00000
C2 0.02769 0.02769 0.00361 0.01384 0.00000 0.00000
O1 0.02641 0.01374 0.03524 0.00687 0.00000 0.00000
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
_atom_site_U_iso_or_equiv
KMe1 0.33333 0.66667 0.09960 1.00000 0.01418
CaMe2 0.00000 0.00000 0.25000 1.00000 0.01684
C1 0.33333 0.66667 0.75000 1.00000 0.01786
C2 0.00000 0.00000 0.00000 1.00000 0.01343
O1 0.52649 0.05298 0.25000 1.00000 0.02343
O2 0.08650 0.17300 0.92240 0.33333 0.03673
O3 0.23800 0.00000 0.00000 0.16667 0.03673