A3Te(Zn2Ge)Ge2O14 (A = Sr, Ba, and Pb): New Langasite Mid-infrared Nonlinear Optical Materials by Rational Chemical Substitution
Chen, Kaichuang; Lin, Chensheng; Zhang, Shengzi; Peng, Guang; Chen, Yu; Zhao, Dan; Fan, Huixin; Yang, Shunda; Wen, Xin; Luo, Min; Lin, Zheshuai; Ye, Ning; Chemistry of Materials  (2021) –; doi:10.1021/acs.chemmater.1c01399

data_4004012
_publ_section_title
;
 A3Te(Zn2Ge)Ge2O14 (A = Sr, Ba, and Pb): New Langasite Mid-infrared
 Nonlinear Optical Materials by Rational Chemical Substitution
;
_journal_name_full               'Chemistry of Materials'
_journal_paper_doi               10.1021/acs.chemmater.1c01399
_journal_year                    2021
_chemical_formula_sum            'Ba3 Ge3 O14 Te Zn2'
_chemical_formula_weight         1112.13
_space_group_crystal_system      trigonal
_space_group_IT_number           150
_space_group_name_Hall           'P 3 2"'
_space_group_name_H-M_alt        'P 3 2 1'
_audit_creation_method           SHELXL-2016/6
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            1
_cell_length_a                   8.616(3)
_cell_length_b                   8.616(3)
_cell_length_c                   5.198(3)
_cell_measurement_reflns_used    844
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.4314
_cell_measurement_theta_min      2.7300
_cell_volume                     334.2(3)
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  CCD
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0194
_diffrn_reflns_av_unetI/netI     0.0287
_diffrn_reflns_Laue_measured_fraction_full 0.992
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       -5
_diffrn_reflns_number            1175
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.429
_diffrn_reflns_theta_min         2.730
_exptl_absorpt_coefficient_mu    21.075
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.6590
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            White
_exptl_crystal_density_diffrn    5.527
_exptl_crystal_description       Prism
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.1500
_exptl_crystal_size_mid          0.0500
_exptl_crystal_size_min          0.0500
_refine_diff_density_max         1.071
_refine_diff_density_min         -2.180
_refine_diff_density_rms         0.323
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.09(10)
_refine_ls_extinction_coef       0.026(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2016/6 (Sheldrick 2016)'
_refine_ls_goodness_of_fit_ref   1.299
_refine_ls_hydrogen_treatment    undef
_refine_ls_matrix_type           full
_refine_ls_number_parameters     39
_refine_ls_number_reflns         515
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.299
_refine_ls_R_factor_all          0.0255
_refine_ls_R_factor_gt           0.0250
_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/[\s^2^(Fo^2^)+(0.0224P)^2^+5.7683P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0748
_refine_ls_wR_factor_ref         0.0749
_reflns_Friedel_coverage         0.679
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                502
_reflns_number_total             515
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            cm1c01399_si_002.cif
_cod_data_source_block           a
_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
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 7556 2019-12-06 15:28:31Z antanas 
;
_cod_database_code               4004012
_shelx_shelxl_version_number     2016/6
_shelx_res_checksum              64504
_shelx_hkl_checksum              1858