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_4004013
_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            'Ge3 O14 Sr3 Te Zn2'
_chemical_formula_weight         962.97
_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                   8.3223(5)
_cell_length_b                   8.3223(5)
_cell_length_c                   5.0551(5)
_cell_measurement_reflns_used    954
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.4045
_cell_measurement_theta_min      4.0312
_cell_volume                     303.21(4)
_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 0.996
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  CCD
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0406
_diffrn_reflns_av_unetI/netI     0.0366
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       6
_diffrn_reflns_limit_l_min       -6
_diffrn_reflns_number            2250
_diffrn_reflns_point_group_measured_fraction_full 0.997
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.403
_diffrn_reflns_theta_min         4.031
_exptl_absorpt_coefficient_mu    26.739
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.7199
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            White
_exptl_crystal_density_diffrn    5.274
_exptl_crystal_description       Prism
_exptl_crystal_F_000             434
_exptl_crystal_size_max          0.2000
_exptl_crystal_size_mid          0.1000
_exptl_crystal_size_min          0.1000
_refine_diff_density_max         2.713
_refine_diff_density_min         -2.369
_refine_diff_density_rms         0.387
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.12(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.266
_refine_ls_hydrogen_treatment    undef
_refine_ls_matrix_type           full
_refine_ls_number_parameters     38
_refine_ls_number_reflns         474
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.262
_refine_ls_R_factor_all          0.0358
_refine_ls_R_factor_gt           0.0344
_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^)+(0.0290P)^2^+9.3911P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1055
_refine_ls_wR_factor_ref         0.1064
_reflns_Friedel_coverage         0.663
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                458
_reflns_number_total             474
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            cm1c01399_si_004.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_original_cell_volume        303.21(5)
_cod_database_code               4004013
_shelx_shelxl_version_number     2016/6
_shelx_res_checksum              69645
_shelx_hkl_checksum              78100