Synthesis, Characterization, and Framework Heteroatom Localization in ITQ-21
Teresa Blasco; Avelino Corma; Maria José Díaz-Cabañas; Fernando Rey; Jordi Rius; German Sastre; José A. Vidal-Moya; Journal of the American Chemical Society 126 (2004) 13414–13423; doi:10.1021/ja047990z

data_4113064
_publ_section_title
;
 Synthesis, Characterization, and Framework Heteroatom Localization in
 ITQ-21
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13414
_journal_page_last               13423
_journal_paper_doi               10.1021/ja047990z
_journal_volume                  126
_journal_year                    2004
_chemical_compound_source        synthesis
_chemical_formula_moiety         'Ge14.83 O71.64 Si20.82'
_chemical_formula_sum            'Ge14.83 O71.64 Si20.82'
_chemical_formula_weight         2807.74
_chemical_name_common            itq21_calcined
_chemical_name_systematic
'structure solved from laboratory powder diffraction data'
_space_group_IT_number           221
_symmetry_cell_setting           cubic
_symmetry_Int_Tables_number      221
_symmetry_space_group_name_Hall  '-P 4 2 3'
_symmetry_space_group_name_H-M   'P m -3 m'
_atom_sites_solution_primary     direct
_audit_creation_method           enCIFer
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            1
_cell_length_a                   13.691(2)
_cell_length_b                   13.691(2)
_cell_length_c                   13.691(2)
_cell_measurement_temperature    293(2)
_cell_volume                     2566.3(6)
_computing_structure_refinement  LSP7
_computing_structure_solution    'XLENS -93 (Rius, 1993)'
_diffrn_ambient_temperature      293(2)
_diffrn_measurement_device       'Xpert powder diffractometer'
_diffrn_measurement_method       Bragg-Brentano
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           CuKa12
_diffrn_radiation_wavelength     1.54059
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0000
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       5
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       5
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            39
_diffrn_reflns_theta_max         19.50
_diffrn_reflns_theta_min         2.50
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    8.00
_exptl_absorpt_correction_T_max  0.95
_exptl_absorpt_correction_T_min  0.85
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.82
_exptl_crystal_description       thin_layer_on_Pt_support
_exptl_crystal_F_000             1339.2
_exptl_crystal_size_max          0.001
_exptl_crystal_size_mid          0.001
_exptl_crystal_size_min          0.001
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_all   2.700
_refine_ls_goodness_of_fit_obs   2.700
_refine_ls_matrix_type           full
_refine_ls_number_parameters     13
_refine_ls_number_reflns         39
_refine_ls_number_restraints     42
_refine_ls_restrained_S_all      0.800
_refine_ls_restrained_S_obs      0.800
_refine_ls_R_factor_all          0.0590
_refine_ls_R_factor_obs          0.0590
_refine_ls_shift/esd_max         0.01
_refine_ls_shift/esd_mean        0.005
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details     w=1/yobs(2theta)i
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0730
_refine_ls_wR_factor_obs         0.0730
_reflns_number_observed          39
_reflns_number_total             39
_reflns_observed_criterion       >0sigma(I)
_cod_data_source_file            ja047990zsi20040517_063709.cif
_cod_data_source_block           itq21c
_cod_depositor_comments
;
The following automatic conversions were performed:

'_refine_ls_weighting_scheme' value 'calc w=1/yobs(2theta)i' was
changed to 'calc'. New tag '_refine_ls_weighting_details' was
created. The value of the new tag was set to 'w=1/yobs(2theta)i'.

Automatic conversion script
Id: cif_fix_values 3143 2015-03-26 13:38:13Z robertas 
;
_cod_original_cell_volume        2566.29(65)
_cod_database_code               4113064