Strontium Tetragermanate, SrGe~4~O~9~
Nishi, F.; Acta Crystallographica Section C 52 (1996) 2393–2395; doi:10.1107/S0108270196006737

data_2005540
_publ_section_title
;
 Strontium Tetragermanate, SrGe~4~O~9~
;
_journal_issue                   10
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              2393
_journal_page_last               2395
_journal_paper_doi               10.1107/S0108270196006737
_journal_volume                  52
_journal_year                    1996
_chemical_formula_sum            'Ge4 O9 Sr'
_chemical_formula_weight         521.98
_space_group_IT_number           150
_symmetry_cell_setting           trigonal
_symmetry_space_group_name_Hall  'P 3 2"'
_symmetry_space_group_name_H-M   'P 3 2 1'
_atom_type_scat_source           IntTabIV
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                120
_cell_formula_units_Z            3
_cell_length_a                   11.344(2)
_cell_length_b                   11.344(2)
_cell_length_c                   4.750(2)
_cell_measurement_reflns_used    24
_cell_measurement_temperature    293
_cell_measurement_theta_max      35.8
_cell_measurement_theta_min      19.8
_cell_volume                     529.4(3)
_diffrn_measurement_device       'Rigaku AFC-5'
_diffrn_measurement_method       '\w/2\q scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.025
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            1452
_diffrn_reflns_theta_max         40.0
_diffrn_standards_decay_%        0.5
_diffrn_standards_interval_count 150
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    25.9
_exptl_absorpt_correction_T_max  0.0147
_exptl_absorpt_correction_T_min  0.0113
_exptl_absorpt_correction_type   sphere
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    4.91
_exptl_crystal_density_meas      ?
_exptl_crystal_description       Sphere
_exptl_crystal_size_rad          0.14
_refine_diff_density_max         0.45
_refine_diff_density_min         -0.38
_refine_ls_extinction_coef       4.40E-5
_refine_ls_extinction_method     'isotropic secondary'
_refine_ls_goodness_of_fit_obs   1.35
_refine_ls_number_parameters     73
_refine_ls_number_reflns         929
_refine_ls_R_factor_obs          0.049
_refine_ls_shift/esd_max         0.05
_refine_ls_structure_factor_coef F
_refine_ls_weighting_scheme      unit
_refine_ls_wR_factor_obs         0.052
_reflns_number_observed          929
_reflns_number_total             1343
_reflns_observed_criterion       I>3\s(I)
_cod_data_source_file            oh1096.cif
_cod_data_source_block           oh1096a
_cod_depositor_comments
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The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value ' unit' changed to 'unit'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_formula_sum        'Sr Ge4 O9'
_cod_database_code               2005540