#------------------------------------------------------------------------------
#$Date: 2019-12-26 21:22:11 +0200 (Thu, 26 Dec 2019) $
#$Revision: 246100 $
#$URL: file:///home/coder/svn-repositories/cod/cif/2/31/17/2311746.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_2311746
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           167
_space_group_name_Hall           '-R 3 2"c'
_space_group_name_H-M_alt        'R -3 c :H'
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            2
_cell_length_a                   5.01610(10)
_cell_length_b                   5.01610(10)
_cell_length_c                   33.4952(8)
_cell_measurement_reflns_used    9450
_cell_measurement_temperature    280(2)
_cell_measurement_theta_max      40
_cell_measurement_theta_min      1.5
_cell_volume                     729.87(3)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      280(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  StoeStadiVari
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0286
_diffrn_reflns_av_unetI/netI     0.0118
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       66
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            9450
_diffrn_reflns_point_group_measured_fraction_full 0.993
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         45.603
_diffrn_reflns_theta_min         3.650
_exptl_absorpt_coefficient_mu    8.248
_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    3.845
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             768
_exptl_crystal_size_max          0.060
_exptl_crystal_size_mid          0.030
_exptl_crystal_size_min          0.030
_refine_diff_density_max         0.527
_refine_diff_density_min         -0.400
_refine_diff_density_rms         0.114
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    undef
_refine_ls_matrix_type           full
_refine_ls_number_parameters     17
_refine_ls_number_reflns         699
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0199
_refine_ls_R_factor_gt           0.0100
_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)+(0.0127P)²] where P=(Fo²+2Fc²)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0210
_refine_ls_wR_factor_ref         0.0225
_reflns_Friedel_coverage         0.000
_reflns_number_gt                507
_reflns_number_total             699
_reflns_threshold_expression     'I > 2σ(I)'
_cod_data_source_file            xk5041sup1.cif
_cod_data_source_block           norse_280
_cod_original_sg_symbol_H-M      'R -3 c'
_cod_database_code               2311746
_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   0.637
_shelx_estimated_absorpt_t_max   0.790
loop_
_space_group_symop_operation_xyz
'x, y, z'
'-y, x-y, z'
'-x+y, -x, z'
'y, x, -z+1/2'
'x-y, -y, -z+1/2'
'-x, -x+y, -z+1/2'
'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+5/6'
'x-y+2/3, -y+1/3, -z+5/6'
'-x+2/3, -x+y+1/3, -z+5/6'
'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+7/6'
'x-y+1/3, -y+2/3, -z+7/6'
'-x+1/3, -x+y+2/3, -z+7/6'
'-x, -y, -z'
'y, -x+y, -z'
'x-y, x, -z'
'-y, -x, z-1/2'
'-x+y, y, z-1/2'
'x, x-y, z-1/2'
'-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-1/6'
'-x+y+2/3, y+1/3, z-1/6'
'x+2/3, x-y+1/3, z-1/6'
'-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+1/6'
'-x+y+1/3, y+2/3, z+1/6'
'x+1/3, x-y+2/3, z+1/6'
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 0.2500 0.00992(2) Uani 1 6 d S T P
Mg2 Mg 0.0000 0.0000 0.0000 0.00804(7) Uani 1 6 d S T P
O3 O 0.11770(16) 0.82531(16) 0.12921(2) 0.01808(12) Uani 1 1 d . . .
C4 C 0.0000 0.0000 0.13039(3) 0.00870(11) Uani 1 3 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 123.55(3) 35_445 26_445
O3 Ba1 O3 137.32(3) 35_445 25_455
O3 Ba1 O3 93.24(2) 26_445 25_455
O3 Ba1 O3 93.24(2) 35_445 34_545
O3 Ba1 O3 137.32(3) 26_445 34_545
O3 Ba1 O3 66.37(3) 25_455 34_545
O3 Ba1 O3 93.24(2) 35_445 36
O3 Ba1 O3 66.37(3) 26_445 36
O3 Ba1 O3 123.55(2) 25_455 36
O3 Ba1 O3 93.24(2) 34_545 36
O3 Ba1 O3 66.37(3) 35_445 27
O3 Ba1 O3 93.24(2) 26_445 27
O3 Ba1 O3 93.24(2) 25_455 27
O3 Ba1 O3 123.55(2) 34_545 27
O3 Ba1 O3 137.32(3) 36 27
O3 Ba1 O3 177.078(15) 35_445 27_545
O3 Ba1 O3 57.13(2) 26_445 27_545
O3 Ba1 O3 43.87(2) 25_455 27_545
O3 Ba1 O3 85.069(15) 34_545 27_545
O3 Ba1 O3 84.485(15) 36 27_545
O3 Ba1 O3 116.55(2) 27 27_545
O3 Ba1 O3 57.13(2) 35_445 36_455
O3 Ba1 O3 177.078(15) 26_445 36_455
O3 Ba1 O3 85.069(15) 25_455 36_455
O3 Ba1 O3 43.87(2) 34_545 36_455
O3 Ba1 O3 116.55(2) 36 36_455
O3 Ba1 O3 84.485(15) 27 36_455
O3 Ba1 O3 122.36(2) 27_545 36_455
O3 Ba1 O3 43.87(2) 35_445 34_655
O3 Ba1 O3 84.485(15) 26_445 34_655
O3 Ba1 O3 177.078(16) 25_455 34_655
O3 Ba1 O3 116.55(2) 34_545 34_655
O3 Ba1 O3 57.13(2) 36 34_655
O3 Ba1 O3 85.070(15) 27 34_655
O3 Ba1 O3 135.13(2) 27_545 34_655
O3 Ba1 O3 97.125(16) 36_455 34_655
O3 Ba1 O3 84.485(15) 35_445 25_565
O3 Ba1 O3 43.87(2) 26_445 25_565
O3 Ba1 O3 116.55(2) 25_455 25_565
O3 Ba1 O3 177.078(16) 34_545 25_565
O3 Ba1 O3 85.070(15) 36 25_565
O3 Ba1 O3 57.13(2) 27 25_565
O3 Ba1 O3 97.125(16) 27_545 25_565
O3 Ba1 O3 135.13(2) 36_455 25_565
O3 Ba1 O3 60.53(3) 34_655 25_565
O3 Ba1 O3 85.070(15) 35_445 26_345
O3 Ba1 O3 116.55(2) 26_445 26_345
O3 Ba1 O3 57.13(2) 25_455 26_345
O3 Ba1 O3 84.486(15) 34_545 26_345
O3 Ba1 O3 177.078(15) 36 26_345
O3 Ba1 O3 43.87(2) 27 26_345
O3 Ba1 O3 97.125(16) 27_545 26_345
O3 Ba1 O3 60.53(3) 36_455 26_345
O3 Ba1 O3 122.36(2) 34_655 26_345
O3 Ba1 O3 97.125(16) 25_565 26_345
O3 Ba1 O3 116.55(2) 35_445 35_435
O3 Ba1 O3 85.070(15) 26_445 35_435
O3 Ba1 O3 84.486(15) 25_455 35_435
O3 Ba1 O3 57.13(2) 34_545 35_435
O3 Ba1 O3 43.87(2) 36 35_435
O3 Ba1 O3 177.078(15) 27 35_435
O3 Ba1 O3 60.53(3) 27_545 35_435
O3 Ba1 O3 97.125(16) 36_455 35_435
O3 Ba1 O3 97.125(16) 34_655 35_435
O3 Ba1 O3 122.36(2) 25_565 35_435
O3 Ba1 O3 135.13(2) 26_345 35_435
O3 Mg2 O3 180.00(7) 29_445 17_554
O3 Mg2 O3 86.73(3) 29_445 30_455
O3 Mg2 O3 93.27(3) 17_554 30_455
O3 Mg2 O3 93.27(3) 29_445 18_544
O3 Mg2 O3 86.73(3) 17_554 18_544
O3 Mg2 O3 180.00(5) 30_455 18_544
O3 Mg2 O3 86.73(3) 29_445 28
O3 Mg2 O3 93.27(3) 17_554 28
O3 Mg2 O3 86.73(3) 30_455 28
O3 Mg2 O3 93.27(3) 18_544 28
O3 Mg2 O3 93.27(3) 29_445 16_444
O3 Mg2 O3 86.73(3) 17_554 16_444
O3 Mg2 O3 93.27(3) 30_455 16_444
O3 Mg2 O3 86.73(3) 18_544 16_444
O3 Mg2 O3 180.00(4) 28 16_444
O3 Mg2 Ba1 98.382(19) 29_445 13_444
O3 Mg2 Ba1 81.618(19) 17_554 13_444
O3 Mg2 Ba1 41.363(19) 30_455 13_444
O3 Mg2 Ba1 138.637(19) 18_544 13_444
O3 Mg2 Ba1 48.40(2) 28 13_444
O3 Mg2 Ba1 131.60(2) 16_444 13_444
O3 Mg2 Ba1 81.618(19) 29_445 25
O3 Mg2 Ba1 98.382(19) 17_554 25
O3 Mg2 Ba1 138.637(19) 30_455 25
O3 Mg2 Ba1 41.363(19) 18_544 25
O3 Mg2 Ba1 131.60(2) 28 25
O3 Mg2 Ba1 48.40(2) 16_444 25
Ba1 Mg2 Ba1 180.0 13_444 25
O3 Mg2 Ba1 48.40(2) 29_445 13_554
O3 Mg2 Ba1 131.60(2) 17_554 13_554
O3 Mg2 Ba1 98.382(19) 30_455 13_554
O3 Mg2 Ba1 81.618(19) 18_544 13_554
O3 Mg2 Ba1 41.364(19) 28 13_554
O3 Mg2 Ba1 138.636(19) 16_444 13_554
Ba1 Mg2 Ba1 77.150(1) 13_444 13_554
Ba1 Mg2 Ba1 102.850(1) 25 13_554
O3 Mg2 Ba1 131.60(2) 29_445 25_445
O3 Mg2 Ba1 48.40(2) 17_554 25_445
O3 Mg2 Ba1 81.618(19) 30_455 25_445
O3 Mg2 Ba1 98.382(19) 18_544 25_445
O3 Mg2 Ba1 138.636(19) 28 25_445
O3 Mg2 Ba1 41.364(19) 16_444 25_445
Ba1 Mg2 Ba1 102.850(1) 13_444 25_445
Ba1 Mg2 Ba1 77.150(1) 25 25_445
Ba1 Mg2 Ba1 180.0 13_554 25_445
O3 Mg2 Ba1 41.364(19) 29_445 13_544
O3 Mg2 Ba1 138.636(19) 17_554 13_544
O3 Mg2 Ba1 48.40(2) 30_455 13_544
O3 Mg2 Ba1 131.60(2) 18_544 13_544
O3 Mg2 Ba1 98.383(19) 28 13_544
O3 Mg2 Ba1 81.617(19) 16_444 13_544
Ba1 Mg2 Ba1 77.150(1) 13_444 13_544
Ba1 Mg2 Ba1 102.850(2) 25 13_544
Ba1 Mg2 Ba1 77.150(1) 13_554 13_544
Ba1 Mg2 Ba1 102.850(1) 25_445 13_544
O3 Mg2 Ba1 138.636(19) 29_445 25_455
O3 Mg2 Ba1 41.364(19) 17_554 25_455
O3 Mg2 Ba1 131.60(2) 30_455 25_455
O3 Mg2 Ba1 48.40(2) 18_544 25_455
O3 Mg2 Ba1 81.617(19) 28 25_455
O3 Mg2 Ba1 98.383(19) 16_444 25_455
Ba1 Mg2 Ba1 102.850(2) 13_444 25_455
Ba1 Mg2 Ba1 77.150(1) 25 25_455
Ba1 Mg2 Ba1 102.850(1) 13_554 25_455
Ba1 Mg2 Ba1 77.150(1) 25_445 25_455
Ba1 Mg2 Ba1 180.0 13_544 25_455
C4 O3 Mg2 139.29(6) 1_565 16_554
C4 O3 Ba1 99.95(4) 1_565 25_455
Mg2 O3 Ba1 109.86(3) 16_554 25_455
C4 O3 Ba1 88.65(4) 1_565 25_565
Mg2 O3 Ba1 101.50(3) 16_554 25_565
Ba1 O3 Ba1 116.55(2) 25_455 25_565
O3 C4 O3 119.906(6) 2_665 3_455
O3 C4 O3 119.906(6) 2_665 1_545
O3 C4 O3 119.906(6) 3_455 1_545
O3 C4 Ba1 149.06(6) 2_665 25_445
O3 C4 Ba1 68.54(4) 3_455 25_445
O3 C4 Ba1 57.59(4) 1_545 25_445
O3 C4 Ba1 57.59(4) 2_665 25
O3 C4 Ba1 149.06(6) 3_455 25
O3 C4 Ba1 68.54(4) 1_545 25
Ba1 C4 Ba1 99.049(18) 25_445 25
O3 C4 Ba1 68.54(4) 2_665 25_455
O3 C4 Ba1 57.59(4) 3_455 25_455
O3 C4 Ba1 149.06(6) 1_545 25_455
Ba1 C4 Ba1 99.048(18) 25_445 25_455
Ba1 C4 Ba1 99.048(18) 25 25_455
loop_
_geom_bond_atom_site_label_1
_geom_bond_atom_site_label_2
_geom_bond_distance
_geom_bond_site_symmetry_2
Ba1 O3 2.8261(7) 35_445
Ba1 O3 2.8261(7) 26_445
Ba1 O3 2.8261(7) 25_455
Ba1 O3 2.8261(7) 34_545
Ba1 O3 2.8261(7) 36
Ba1 O3 2.8261(7) 27
Ba1 O3 3.0693(7) 27_545
Ba1 O3 3.0693(7) 36_455
Ba1 O3 3.0693(8) 34_655
Ba1 O3 3.0693(8) 25_565
Ba1 O3 3.0693(7) 26_345
Ba1 O3 3.0693(7) 35_435
Mg2 O3 2.0586(6) 29_445
Mg2 O3 2.0586(6) 17_554
Mg2 O3 2.0586(6) 30_455
Mg2 O3 2.0586(6) 18_544
Mg2 O3 2.0586(6) 28
Mg2 O3 2.0586(6) 16_444
Mg2 Ba1 4.02227(6) 13_444
Mg2 Ba1 4.02227(6) 25
Mg2 Ba1 4.02227(6) 13_554
Mg2 Ba1 4.02227(6) 25_445
Mg2 Ba1 4.02230(6) 13_544
Mg2 Ba1 4.02230(6) 25_455
O3 C4 1.2788(6) 1_565
O3 Mg2 2.0585(6) 16_554
O3 Ba1 2.8261(7) 25_455
O3 Ba1 3.0693(7) 25_565
C4 O3 1.2788(6) 2_665
C4 O3 1.2788(6) 3_455
C4 O3 1.2788(6) 1_545
C4 Ba1 3.2971(4) 25_445
C4 Ba1 3.2971(4) 25
C4 Ba1 3.2971(4) 25_455
