BaGa2GeX6(X=S, Se): New mid-IR nonlinear optical crystals with large band gaps
Lin, Xinsong; Guo, Yifeng; Ye, Ning; Journal of Solid State Chemistry 195 (2012) 172–177; doi:10.1016/j.jssc.2012.01.043

data_1562920
_publ_section_title
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 BaGa2GeX6(X=S, Se): New mid-IR nonlinear optical crystals with large band
 gaps
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_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              172
_journal_page_last               177
_journal_paper_doi               10.1016/j.jssc.2012.01.043
_journal_volume                  195
_journal_year                    2012
_chemical_formula_sum            'Ba Ga2 Ge Se6'
_chemical_formula_weight         823.13
_space_group_IT_number           146
_space_group_name_Hall           'R 3'
_space_group_name_H-M_alt        'R 3 :H'
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_H-M   'R 3 :H'
_atom_sites_solution_hydrogens   none
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                120.00
_cell_formula_units_Z            3
_cell_length_a                   10.0438(13)
_cell_length_b                   10.0438(13)
_cell_length_c                   9.114(2)
_cell_measurement_reflns_used    844
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.4895
_cell_measurement_theta_min      3.2376
_cell_volume                     796.2(2)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_molecular_graphics    'SHELXL-97 (Sheldrick, 2008)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Mercury70 (2x2 bin mode)'
_diffrn_measurement_method       CCD_Profile_fitting
_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  0.0463
_diffrn_reflns_av_sigmaI/netI    0.0553
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            2091
_diffrn_reflns_theta_full        27.36
_diffrn_reflns_theta_max         27.36
_diffrn_reflns_theta_min         3.24
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count none
_diffrn_standards_interval_time  none
_exptl_absorpt_coefficient_mu    31.985
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.5287
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            reddish-brown
_exptl_crystal_density_diffrn    5.15
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             708
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         1.051
_refine_diff_density_min         -1.089
_refine_diff_density_rms         0.209
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.04(3)
_refine_ls_extinction_coef       0.0124(3)
_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   1.017
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     32
_refine_ls_number_reflns         752
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.0314
_refine_ls_R_factor_gt           0.0295
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0148P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0556
_refine_ls_wR_factor_ref         0.0566
_reflns_number_gt                718
_reflns_number_total             752
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            JSSC-2012-195-172.cif
_cod_data_source_block           2
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Multi-scan' was
changed to 'multi-scan' in accordance with the built-in table derived
from the CIF Core dictionary named 'cif_core.dic' version 2.4.5 last
updated on 2014-11-21.

data item '_symmetry_cell_setting' value 'Trigonal' was changed to
'trigonal' in accordance with the built-in table derived from the CIF
Core dictionary named 'cif_core.dic' version 2.4.5 last updated on
2014-11-21.

Automatic conversion script
Id: cif_fix_values 8369 2020-08-20 11:38:08Z andrius 
;
_cod_original_sg_symbol_H-M      R3
_cod_database_code               1562920