Meta-barium borate, II-BaB~2~O~4~, at 163 and 293K
Shao-Fang Lu; Zi-Xiang Huang; Jin-Ling Huang; Acta Crystallographica Section C 62 (2006) i73–i75; doi:10.1107/S010827010602542X

data_2015571
_publ_section_title
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 Meta-barium borate, II-BaB~2~O~4~, at 163 and 293K
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_journal_coeditor_code           IZ3008
_journal_issue                   9
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              i73
_journal_page_last               i75
_journal_paper_doi               10.1107/S010827010602542X
_journal_volume                  62
_journal_year                    2006
_chemical_formula_iupac          'Ba3 (B3 O6)2'
_chemical_formula_moiety         'B6 Ba3 O12'
_chemical_formula_sum            'B6 Ba3 O12'
_chemical_formula_weight         668.85
_chemical_name_systematic
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meta-barium borate
;
_space_group_IT_number           161
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  'R 3 -2"c'
_symmetry_space_group_name_H-M   'R 3 c :H'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            6
_cell_length_a                   12.530(3)
_cell_length_b                   12.530(3)
_cell_length_c                   12.657(4)
_cell_measurement_reflns_used    1761
_cell_measurement_temperature    163(2)
_cell_measurement_theta_max      27.44
_cell_measurement_theta_min      2.47
_cell_volume                     1720.9(8)
_computing_cell_refinement       CrystalClear
_computing_data_collection       'CrystalClear (Rigaku/MSC, 2001)'
_computing_data_reduction        'CrystalStructure (Rigaku/MSC, 2004)'
_computing_molecular_graphics    SHELXL97
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      163(2)
_diffrn_measured_fraction_theta_full 0.962
_diffrn_measured_fraction_theta_max 0.962
_diffrn_measurement_device_type  'Rigaku Saturn70 CCD area-detector'
_diffrn_measurement_method       '\f and \w'
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0210
_diffrn_reflns_av_sigmaI/netI    0.0226
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            1778
_diffrn_reflns_theta_full        27.44
_diffrn_reflns_theta_max         27.44
_diffrn_reflns_theta_min         3.73
_exptl_absorpt_coefficient_mu    10.243
_exptl_absorpt_correction_T_max  0.324
_exptl_absorpt_correction_T_min  0.212
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(ABSCOR; Jacobson, 1998)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    3.872
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1764
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.532
_refine_diff_density_min         -0.453
_refine_ls_abs_structure_details 'Flack (1983), with how many Friedel pairs'
_refine_ls_abs_structure_Flack   0.05(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.076
_refine_ls_matrix_type           full
_refine_ls_number_parameters     64
_refine_ls_number_reflns         625
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.0115
_refine_ls_R_factor_gt           0.0114
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0095P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0271
_refine_ls_wR_factor_ref         0.0271
_reflns_number_gt                623
_reflns_number_total             625
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            iz3008.cif
_cod_data_source_block           BBO_163K
_cod_depositor_comments
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The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Trigonal' changed to 'trigonal' according
to '/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Trigonal' changed to 'trigonal'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        1721.0(7)
_cod_original_sg_symbol_H-M      R3c
_cod_database_code               2015571
_cod_database_fobs_code          2015571