#------------------------------------------------------------------------------
#$Date: 2019-12-26 21:22:11 +0200 (Thu, 26 Dec 2019) $
#$Revision: 246100 $
#$URL: file:///home/coder/svn-repositories/cod/cif/2/31/17/2311756.cif $
#------------------------------------------------------------------------------
#
# This file is available in the Crystallography Open Database (COD),
# http://www.crystallography.net/. The original data for this entry
# were provided by IUCr Journals, http://journals.iucr.org/.
#
# 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_2311756
loop_
_publ_author_name
'Ende, Martin'
'Effenberger, Herta'
'Miletich, Ronald'
_publ_section_title
;
 Evolution of the α-BaMg(CO₃)₂ low-temperature
 superstructure and the tricritical nature of its α-β phase transition.
;
_journal_issue                   'Pt 5'
_journal_name_full
'Acta crystallographica Section B, Structural science, crystal engineering and materials'
_journal_page_first              827
_journal_page_last               835
_journal_paper_doi               10.1107/S2052520617009295
_journal_volume                  73
_journal_year                    2017
_chemical_formula_sum            'C6 Ba3 Mg3 O18'
_chemical_formula_weight         845.01
_space_group_crystal_system      trigonal
_space_group_IT_number           166
_space_group_name_Hall           '-R 3 2"'
_space_group_name_H-M_alt        'R -3 m :H'
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            1
_cell_length_a                   5.0217(2)
_cell_length_b                   5.0217(2)
_cell_length_c                   16.8037(6)
_cell_measurement_reflns_used    5074
_cell_measurement_temperature    399(2)
_cell_measurement_theta_max      45
_cell_measurement_theta_min      1.5
_cell_volume                     366.98(2)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      399(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  StoeStadiVari
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0287
_diffrn_reflns_av_unetI/netI     0.0117
_diffrn_reflns_Laue_measured_fraction_full 0.990
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            5074
_diffrn_reflns_point_group_measured_fraction_full 0.990
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         45.535
_diffrn_reflns_theta_min         3.638
_exptl_absorpt_coefficient_mu    8.202
_exptl_absorpt_correction_T_max  0.8
_exptl_absorpt_correction_T_min  0.7
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   '(Stoe & Cie GmbH 2016)'
_exptl_crystal_density_diffrn    3.824
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             384
_exptl_crystal_size_max          0.060
_exptl_crystal_size_mid          0.030
_exptl_crystal_size_min          0.030
_refine_diff_density_max         1.270
_refine_diff_density_min         -0.680
_refine_diff_density_rms         0.130
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.117
_refine_ls_hydrogen_treatment    undef
_refine_ls_matrix_type           full
_refine_ls_number_parameters     14
_refine_ls_number_reflns         429
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.117
_refine_ls_R_factor_all          0.0136
_refine_ls_R_factor_gt           0.0136
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[σ²(Fo²)+(0.0116P)²+0.9240P] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0320
_refine_ls_wR_factor_ref         0.0320
_reflns_Friedel_coverage         0.000
_reflns_number_gt                429
_reflns_number_total             429
_reflns_threshold_expression     'I > 2σ(I)'
_cod_data_source_file            xk5041sup1.cif
_cod_data_source_block           norse_400
_cod_original_cell_volume        366.98(3)
_cod_original_sg_symbol_H-M      'R -3 m'
_cod_database_code               2311756
_shelx_shelxl_version_number     2014/7
_shelx_space_group_comment
;
The symmetry employed for this shelxl refinement is uniquely defined
by the following loop, which should always be used as a source of
symmetry information in preference to the above space-group names.
They are only intended as comments.
;
_shelx_estimated_absorpt_t_min   0.639
_shelx_estimated_absorpt_t_max   0.791
loop_
_space_group_symop_operation_xyz
'x, y, z'
'-y, x-y, z'
'-x+y, -x, z'
'y, x, -z'
'x-y, -y, -z'
'-x, -x+y, -z'
'x+2/3, y+1/3, z+1/3'
'-y+2/3, x-y+1/3, z+1/3'
'-x+y+2/3, -x+1/3, z+1/3'
'y+2/3, x+1/3, -z+1/3'
'x-y+2/3, -y+1/3, -z+1/3'
'-x+2/3, -x+y+1/3, -z+1/3'
'x+1/3, y+2/3, z+2/3'
'-y+1/3, x-y+2/3, z+2/3'
'-x+y+1/3, -x+2/3, z+2/3'
'y+1/3, x+2/3, -z+2/3'
'x-y+1/3, -y+2/3, -z+2/3'
'-x+1/3, -x+y+2/3, -z+2/3'
'-x, -y, -z'
'y, -x+y, -z'
'x-y, x, -z'
'-y, -x, z'
'-x+y, y, z'
'x, x-y, z'
'-x+2/3, -y+1/3, -z+1/3'
'y+2/3, -x+y+1/3, -z+1/3'
'x-y+2/3, x+1/3, -z+1/3'
'-y+2/3, -x+1/3, z+1/3'
'-x+y+2/3, y+1/3, z+1/3'
'x+2/3, x-y+1/3, z+1/3'
'-x+1/3, -y+2/3, -z+2/3'
'y+1/3, -x+y+2/3, -z+2/3'
'x-y+1/3, x+2/3, -z+2/3'
'-y+1/3, -x+2/3, z+2/3'
'-x+y+1/3, y+2/3, z+2/3'
'x+1/3, x-y+2/3, z+2/3'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_U_iso_or_equiv
_atom_site_adp_type
_atom_site_occupancy
_atom_site_site_symmetry_order
_atom_site_calc_flag
_atom_site_refinement_flags_posn
_atom_site_refinement_flags_adp
_atom_site_refinement_flags_occupancy
Ba1 Ba 0.0000 0.0000 0.5000 0.01395(4) Uani 1 12 d S T P
Mg2 Mg 0.0000 0.0000 0.0000 0.01121(15) Uani 1 12 d S T P
O3 O 0.85358(13) 0.7072(3) 0.25775(7) 0.0277(2) Uani 1 2 d S T P
C4 C 0.0000 0.0000 0.26075(11) 0.0113(2) Uani 1 6 d S T P
loop_
_atom_type_symbol
_atom_type_description
_atom_type_scat_dispersion_real
_atom_type_scat_dispersion_imag
_atom_type_scat_source
C C 0.0033 0.0016 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
O O 0.0106 0.0060 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Mg Mg 0.0486 0.0363 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
Ba Ba -0.3244 2.2819 'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
loop_
_geom_angle_atom_site_label_1
_geom_angle_atom_site_label_2
_geom_angle_atom_site_label_3
_geom_angle
_geom_angle_site_symmetry_1
_geom_angle_site_symmetry_3
O3 Ba1 O3 180.0 31 7_445
O3 Ba1 O3 57.10(4) 31 32_455
O3 Ba1 O3 122.90(4) 7_445 32_455
O3 Ba1 O3 122.90(4) 31 8_545
O3 Ba1 O3 57.10(4) 7_445 8_545
O3 Ba1 O3 180.0 32_455 8_545
O3 Ba1 O3 43.98(4) 31 33_435
O3 Ba1 O3 136.02(4) 7_445 33_435
O3 Ba1 O3 95.46(3) 32_455 33_435
O3 Ba1 O3 84.54(3) 8_545 33_435
O3 Ba1 O3 136.02(4) 31 9_565
O3 Ba1 O3 43.98(4) 7_445 9_565
O3 Ba1 O3 84.54(3) 32_455 9_565
O3 Ba1 O3 95.46(3) 8_545 9_565
O3 Ba1 O3 180.0 33_435 9_565
O3 Ba1 O3 95.46(3) 31 33_545
O3 Ba1 O3 84.54(3) 7_445 33_545
O3 Ba1 O3 43.98(4) 32_455 33_545
O3 Ba1 O3 136.02(4) 8_545 33_545
O3 Ba1 O3 116.94(4) 33_435 33_545
O3 Ba1 O3 63.06(4) 9_565 33_545
O3 Ba1 O3 84.54(3) 31 9_455
O3 Ba1 O3 95.46(3) 7_445 9_455
O3 Ba1 O3 136.02(4) 32_455 9_455
O3 Ba1 O3 43.98(4) 8_545 9_455
O3 Ba1 O3 63.06(4) 33_435 9_455
O3 Ba1 O3 116.94(4) 9_565 9_455
O3 Ba1 O3 180.0 33_545 9_455
O3 Ba1 O3 95.46(3) 31 32_445
O3 Ba1 O3 84.54(3) 7_445 32_445
O3 Ba1 O3 116.94(4) 32_455 32_445
O3 Ba1 O3 63.06(4) 8_545 32_445
O3 Ba1 O3 57.10(4) 33_435 32_445
O3 Ba1 O3 122.90(4) 9_565 32_445
O3 Ba1 O3 95.46(3) 33_545 32_445
O3 Ba1 O3 84.54(3) 9_455 32_445
O3 Ba1 O3 84.54(3) 31 8
O3 Ba1 O3 95.46(3) 7_445 8
O3 Ba1 O3 63.06(4) 32_455 8
O3 Ba1 O3 116.94(4) 8_545 8
O3 Ba1 O3 122.90(4) 33_435 8
O3 Ba1 O3 57.10(4) 9_565 8
O3 Ba1 O3 84.54(3) 33_545 8
O3 Ba1 O3 95.46(3) 9_455 8
O3 Ba1 O3 180.00(4) 32_445 8
O3 Ba1 O3 63.06(4) 31 7_345
O3 Ba1 O3 116.94(4) 7_445 7_345
O3 Ba1 O3 84.54(3) 32_455 7_345
O3 Ba1 O3 95.46(3) 8_545 7_345
O3 Ba1 O3 84.54(3) 33_435 7_345
O3 Ba1 O3 95.46(3) 9_565 7_345
O3 Ba1 O3 122.90(4) 33_545 7_345
O3 Ba1 O3 57.10(4) 9_455 7_345
O3 Ba1 O3 136.03(4) 32_445 7_345
O3 Ba1 O3 43.97(4) 8 7_345
O3 Ba1 O3 116.94(4) 31 31_655
O3 Ba1 O3 63.06(4) 7_445 31_655
O3 Ba1 O3 95.46(3) 32_455 31_655
O3 Ba1 O3 84.54(3) 8_545 31_655
O3 Ba1 O3 95.46(3) 33_435 31_655
O3 Ba1 O3 84.54(3) 9_565 31_655
O3 Ba1 O3 57.10(4) 33_545 31_655
O3 Ba1 O3 122.90(4) 9_455 31_655
O3 Ba1 O3 43.97(4) 32_445 31_655
O3 Ba1 O3 136.03(5) 8 31_655
O3 Ba1 O3 180.0 7_345 31_655
O3 Mg2 O3 180.00(5) 26_455 14_544
O3 Mg2 O3 86.07(5) 26_455 27_445
O3 Mg2 O3 93.93(5) 14_544 27_445
O3 Mg2 O3 93.93(5) 26_455 15_554
O3 Mg2 O3 86.07(5) 14_544 15_554
O3 Mg2 O3 180.00(6) 27_445 15_554
O3 Mg2 O3 86.07(5) 26_455 25
O3 Mg2 O3 93.93(5) 14_544 25
O3 Mg2 O3 86.07(5) 27_445 25
O3 Mg2 O3 93.93(5) 15_554 25
O3 Mg2 O3 93.93(5) 26_455 13_444
O3 Mg2 O3 86.07(5) 14_544 13_444
O3 Mg2 O3 93.93(5) 27_445 13_444
O3 Mg2 O3 86.07(5) 15_554 13_444
O3 Mg2 O3 180.00(6) 25 13_444
O3 Mg2 Ba1 135.327(16) 26_455 7_444
O3 Mg2 Ba1 44.673(16) 14_544 7_444
O3 Mg2 Ba1 135.327(16) 27_445 7_444
O3 Mg2 Ba1 44.673(16) 15_554 7_444
O3 Mg2 Ba1 82.01(4) 25 7_444
O3 Mg2 Ba1 97.99(4) 13_444 7_444
O3 Mg2 Ba1 44.673(16) 26_455 13_554
O3 Mg2 Ba1 135.327(16) 14_544 13_554
O3 Mg2 Ba1 44.673(16) 27_445 13_554
O3 Mg2 Ba1 135.327(16) 15_554 13_554
O3 Mg2 Ba1 97.99(4) 25 13_554
O3 Mg2 Ba1 82.01(4) 13_444 13_554
Ba1 Mg2 Ba1 180.0 7_444 13_554
O3 Mg2 Ba1 82.01(4) 26_455 7_554
O3 Mg2 Ba1 97.99(4) 14_544 7_554
O3 Mg2 Ba1 135.327(16) 27_445 7_554
O3 Mg2 Ba1 44.673(16) 15_554 7_554
O3 Mg2 Ba1 135.327(16) 25 7_554
O3 Mg2 Ba1 44.673(16) 13_444 7_554
Ba1 Mg2 Ba1 77.054(2) 7_444 7_554
Ba1 Mg2 Ba1 102.946(2) 13_554 7_554
O3 Mg2 Ba1 97.99(4) 26_455 13_444
O3 Mg2 Ba1 82.01(4) 14_544 13_444
O3 Mg2 Ba1 44.673(16) 27_445 13_444
O3 Mg2 Ba1 135.327(16) 15_554 13_444
O3 Mg2 Ba1 44.673(16) 25 13_444
O3 Mg2 Ba1 135.327(16) 13_444 13_444
Ba1 Mg2 Ba1 102.946(2) 7_444 13_444
Ba1 Mg2 Ba1 77.054(2) 13_554 13_444
Ba1 Mg2 Ba1 180.0 7_554 13_444
O3 Mg2 Ba1 135.327(16) 26_455 7_454
O3 Mg2 Ba1 44.673(16) 14_544 7_454
O3 Mg2 Ba1 82.01(3) 27_445 7_454
O3 Mg2 Ba1 97.99(3) 15_554 7_454
O3 Mg2 Ba1 135.327(16) 25 7_454
O3 Mg2 Ba1 44.673(16) 13_444 7_454
Ba1 Mg2 Ba1 77.054(2) 7_444 7_454
Ba1 Mg2 Ba1 102.946(2) 13_554 7_454
Ba1 Mg2 Ba1 77.054(2) 7_554 7_454
Ba1 Mg2 Ba1 102.946(2) 13_444 7_454
O3 Mg2 Ba1 44.673(16) 26_455 13_544
O3 Mg2 Ba1 135.327(16) 14_544 13_544
O3 Mg2 Ba1 97.99(3) 27_445 13_544
O3 Mg2 Ba1 82.01(3) 15_554 13_544
O3 Mg2 Ba1 44.673(16) 25 13_544
O3 Mg2 Ba1 135.327(16) 13_444 13_544
Ba1 Mg2 Ba1 102.946(2) 7_444 13_544
Ba1 Mg2 Ba1 77.054(2) 13_554 13_544
Ba1 Mg2 Ba1 102.946(2) 7_554 13_544
Ba1 Mg2 Ba1 77.054(2) 13_444 13_544
Ba1 Mg2 Ba1 180.0 7_454 13_544
C4 O3 Mg2 139.73(12) 1_665 7
C4 O3 Ba1 94.61(5) 1_665 13_554
Mg2 O3 Ba1 105.83(3) 7 13_554
C4 O3 Ba1 94.61(5) 1_665 13_654
Mg2 O3 Ba1 105.83(3) 7 13_654
Ba1 O3 Ba1 116.94(4) 13_554 13_654
O3 C4 O3 119.846(14) 1_445 2_655
O3 C4 O3 119.844(14) 1_445 3_565
O3 C4 O3 119.844(14) 2_655 3_565
O3 C4 Ba1 62.77(5) 1_445 13_444
O3 C4 Ba1 149.13(12) 2_655 13_444
O3 C4 Ba1 62.77(5) 3_565 13_444
O3 C4 Ba1 149.13(12) 1_445 13_554
O3 C4 Ba1 62.77(5) 2_655 13_554
O3 C4 Ba1 62.77(5) 3_565 13_554
Ba1 C4 Ba1 98.99(3) 13_444 13_554
O3 C4 Ba1 62.77(5) 1_445 13_544
O3 C4 Ba1 62.77(5) 2_655 13_544
O3 C4 Ba1 149.13(12) 3_565 13_544
Ba1 C4 Ba1 98.99(3) 13_444 13_544
Ba1 C4 Ba1 98.99(3) 13_554 13_544
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
Ba1 O3 2.9458(7) 31
Ba1 O3 2.9458(7) 7_445
Ba1 O3 2.9458(7) 32_455
Ba1 O3 2.9458(7) 8_545
Ba1 O3 2.9458(7) 33_435
Ba1 O3 2.9458(7) 9_565
Ba1 O3 2.9458(7) 33_545
Ba1 O3 2.9458(7) 9_455
Ba1 O3 2.9458(7) 32_445
Ba1 O3 2.9458(7) 8
Ba1 O3 2.9458(7) 7_345
Ba1 O3 2.9458(7) 31_655
Mg2 O3 2.0631(11) 26_455
Mg2 O3 2.0631(11) 14_544
Mg2 O3 2.0631(11) 27_445
Mg2 O3 2.0631(11) 15_554
Mg2 O3 2.0631(11) 25
Mg2 O3 2.0631(11) 13_444
Mg2 Ba1 4.03100(10) 7_444
Mg2 Ba1 4.03100(10) 13_554
Mg2 Ba1 4.03100(11) 7_554
Mg2 Ba1 4.03100(11) 13_444
Mg2 Ba1 4.03103(10) 7_454
Mg2 Ba1 4.03103(10) 13_544
O3 C4 1.2745(11) 1_665
O3 Mg2 2.0631(11) 7
O3 Ba1 2.9458(7) 13_554
O3 Ba1 2.9458(7) 13_654
C4 O3 1.2745(11) 1_445
C4 O3 1.2745(11) 2_655
C4 O3 1.2746(11) 3_565
C4 Ba1 3.3023(9) 13_444
C4 Ba1 3.3023(9) 13_554
C4 Ba1 3.3023(9) 13_544
