Chemical engineering of mixed halide hexaborates as nonlinear optical materials
Xia, Mingjun; Hou, Zhanyu; Yang, Yi; Xu, Bo; Liu, Lijuan; Wang, Xiaoyang; Lin, Zheshuai; Li, R.K.; Chen, Chuangtian; RSC Adv.  (2016) –; doi:10.1039/C6RA21584J

data_7227024
_publ_section_title
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 Chemical engineering of mixed halide hexaborates as nonlinear optical
 materials
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_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C6RA21584J
_journal_year                    2016
_chemical_formula_sum            'B6 Br0.25 Cl0.75 K3 O10'
_chemical_formula_weight         388.87
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           160
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  'R 3 -2"'
_symmetry_space_group_name_H-M   'R 3 m :H'
_atom_sites_solution_hydrogens   none
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            3
_cell_length_a                   10.0855(4)
_cell_length_b                   10.0855(4)
_cell_length_c                   8.8613(4)
_cell_measurement_reflns_used    1647
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      28.43
_cell_measurement_theta_min      3.27
_cell_volume                     780.59(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  Bruker
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0227
_diffrn_reflns_av_sigmaI/netI    0.0244
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            2192
_diffrn_reflns_theta_full        28.43
_diffrn_reflns_theta_max         28.43
_diffrn_reflns_theta_min         3.27
_exptl_absorpt_coefficient_mu    2.519
_exptl_crystal_density_diffrn    2.482
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             566
_refine_diff_density_max         0.173
_refine_diff_density_min         -0.172
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(2)
_refine_ls_extinction_coef       0.0170(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.119
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     42
_refine_ls_number_reflns         505
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.117
_refine_ls_R_factor_all          0.0139
_refine_ls_R_factor_gt           0.0137
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0103P)^2^+0.3055P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0337
_refine_ls_wR_factor_ref         0.0342
_reflns_number_gt                501
_reflns_number_total             505
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6ra21584j2.cif
_cod_data_source_block           zhn20150918_2_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Trigonal' changed to 'trigonal'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 
;
_cod_original_sg_symbol_H-M      R3m
_cod_database_code               7227024