Structure and physical properties of RE2AgGe3 (RE=Ce, Pr, Nd) compounds
Sarkar, Sumanta; Mumbaraddi, Dundappa; Halappa, Pramod; Kalsi, Deepti; Rayaprol, Sudhindra; Peter, Sebastian C.; Journal of Solid State Chemistry 229 (2015) 287–295; doi:10.1016/j.jssc.2015.06.003

data_1561857
_publ_section_title
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 Structure and physical properties of RE2AgGe3 (RE=Ce, Pr, Nd) compounds
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_journal_name_full               'Journal of Solid State Chemistry'
_journal_page_first              287
_journal_page_last               295
_journal_paper_doi               10.1016/j.jssc.2015.06.003
_journal_volume                  229
_journal_year                    2015
_chemical_formula_sum            'Ag1.23 Ge2.77 Pr2'
_chemical_formula_weight         615.69
_chemical_name_common            Pr2AgGe3
_space_group_IT_number           141
_space_group_name_Hall           '-I 4bd 2'
_space_group_name_H-M_alt        'I 41/a m d :2'
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_H-M   'I 41/a m d :2'
_atom_sites_solution_hydrogens   .
_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                90.00
_cell_formula_units_Z            2
_cell_length_a                   4.2401(6)
_cell_length_b                   4.2401(6)
_cell_length_c                   14.611(3)
_cell_measurement_reflns_used    530
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.2
_cell_measurement_theta_min      5.0
_cell_volume                     262.68(8)
_computing_cell_refinement       'SMART APEX II'
_computing_data_collection       'SMART APEX II (Bruker,2010)'
_computing_data_reduction        'SAINT (Bruker,2000)'
_computing_molecular_graphics    'Ortep-3v2 for windows (Farrugia, 1997)'
_computing_publication_material  'PLATON (Spek, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0497
_diffrn_reflns_av_sigmaI/netI    0.0378
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -4
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            530
_diffrn_reflns_theta_full        27.21
_diffrn_reflns_theta_max         27.21
_diffrn_reflns_theta_min         5.01
_exptl_absorpt_coefficient_mu    38.303
_exptl_absorpt_correction_T_max  0.216
_exptl_absorpt_correction_T_min  0.050
_exptl_absorpt_correction_type   numerical
_exptl_crystal_colour            Metallic
_exptl_crystal_density_diffrn    7.747
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             527
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.04
_refine_diff_density_max         2.330
_refine_diff_density_min         -3.219
_refine_diff_density_rms         0.563
_refine_ls_extinction_coef       0.00259(18)
_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   1.441
_refine_ls_hydrogen_treatment    .
_refine_ls_matrix_type           full
_refine_ls_number_parameters     9
_refine_ls_number_reflns         98
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.441
_refine_ls_R_factor_all          0.0557
_refine_ls_R_factor_gt           0.0506
_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^)+(0.0000P)^2^+39.3456P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1128
_refine_ls_wR_factor_ref         0.1165
_reflns_number_gt                84
_reflns_number_total             98
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            JSSC-2015-229-287.cif
_cod_data_source_block           Pr2AgGe3
_cod_depositor_comments
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The following automatic conversions were performed:

data item '_exptl_absorpt_correction_type' value 'Numerical' was
changed to 'numerical' 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 'Tetragonal' was changed to
'tetragonal' 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 
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_cod_original_sg_symbol_H-M      I41/amd
_cod_database_code               1561857