Distorted Te nets in the modulated crystal structures of <i>RE</i>Te~1.94(1)~ (<i>RE</i> = La, Pr, Nd)
Poddig, Hagen; Doert, Thomas; Acta Crystallographica Section B 76 (2020) –; doi:10.1107/S2052520620013797

data_2108700
_publ_section_title
;
 Distorted Te nets in the modulated crystal structures of
 <i>RE</i>Te~1.94(1)~ (<i>RE</i> = La, Pr, Nd)
;
_journal_coeditor_code           DK5100SUP1
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section B'
_journal_page_first
;
;
_journal_paper_doi               10.1107/S2052520620013797
_journal_volume                  76
_journal_year                    2020
_chemical_formula_sum            'La Te1.933'
_chemical_formula_weight         385.82
_chemical_name_systematic        'Lanthanum telluride (1/1.933)'
_space_group_crystal_system      tetragonal
_space_group_IT_number           129
_space_group_name_Hall           'P 4ab 2ab -1ab'
_space_group_name_H-M_alt        'P 4/n m m :1'
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   4.5226(6)
_cell_length_b                   4.5226(6)
_cell_length_c                   9.147(1)
_cell_measurement_reflns_used    4440
_cell_measurement_temperature    296(1)
_cell_measurement_theta_max      29.06
_cell_measurement_theta_min      4.46
_cell_volume                     187.09(4)
_computing_cell_refinement       'STOE X-AREA'
_computing_data_collection       'STOE X-AREA'
_computing_data_reduction        'STOE X-RED'
_computing_publication_material
'DIAMOND v. 4.5.2 (Brandenburg, Germany, 2018)'
_computing_structure_refinement  'SHELXL 2016/6 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296(1)
_diffrn_detector                 'image plate (34 cm diameter)'
_diffrn_detector_area_resol_mean 6.67
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device       'two-circle diffractometer'
_diffrn_measurement_device_type  'IPDS II, Stoe'
_diffrn_measurement_method       'rotation method'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0423
_diffrn_reflns_av_unetI/netI     0.0151
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            2074
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.055
_diffrn_reflns_theta_min         4.456
_diffrn_source
'sealed X-ray tube, 12 x 0.4 mm long-fine focus'
_exptl_absorpt_coefficient_mu    25.927
_exptl_absorpt_correction_T_max  0.2401
_exptl_absorpt_correction_T_min  0.0706
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'STOE X-RED32, v. 1.53'
_exptl_crystal_colour            black
_exptl_crystal_density_diffrn    6.827
_exptl_crystal_description       plate
_exptl_crystal_F_000             315
_exptl_crystal_size_max          0.1819
_exptl_crystal_size_mid          0.06015
_exptl_crystal_size_min          0.0448
_refine_diff_density_max         1.824
_refine_diff_density_min         -1.344
_refine_diff_density_rms         0.241
_refine_ls_extinction_coef       0.0100(13)
_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   1.248
_refine_ls_hydrogen_treatment    undef
_refine_ls_matrix_type           full
_refine_ls_number_parameters     11
_refine_ls_number_reflns         184
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.215
_refine_ls_R_factor_all          0.0189
_refine_ls_R_factor_gt           0.0189
_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^)+(0.0136P)^2^+1.5828P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0433
_refine_ls_wR_factor_ref         0.0433
_reflns_number_gt                182
_reflns_number_total             183
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            dk5100sup1.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_diffrn_radiation_probe' value 'X-ray' was changed to
'x-ray' in accordance with the
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/IUCr/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        187.10(4)
_cod_original_sg_symbol_H-M      'P 4/n m m:1'
_cod_original_formula_sum        'La1 Te1.933'
_cod_database_code               2108700
_shelx_res_checksum              29632
_shelx_hkl_checksum              20954
_cod_database_fobs_code 2108700