KMo~5~O~13~ and KNb~1.76~Sb~3.24~O~13~
Ftini, Mohamed Mongi; Krifa, Mohamed; Amor, Haddad; Acta Crystallographica Section C 58 (2002) i106–i108; doi:10.1107/S0108270102007886

data_2012855
_publ_section_title
;
 KMo~5~O~13~ and KNb~1.76~Sb~3.24~O~13~
;
_journal_issue                   8
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              i106
_journal_page_last               i108
_journal_paper_doi               10.1107/S0108270102007886
_journal_volume                  58
_journal_year                    2002
_chemical_formula_iupac          'K Nb1.76 Sb3.24 O13'
_chemical_formula_structural     'K Nb1.76 Sb3.24 O13'
_chemical_formula_sum            'K Nb1.76 O13 Sb3.24'
_chemical_formula_weight         804.67
_chemical_name_systematic
;
Potassium niobium antimony oxide (1/1.76/3.24)
;
_space_group_IT_number           63
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-C 2c 2'
_symmetry_space_group_name_H-M   'C m c m'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL97
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.6970(10)
_cell_length_b                   9.0270(10)
_cell_length_c                   17.047(2)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      14.51
_cell_measurement_theta_min      10.00
_cell_volume                     1030.6(2)
_computing_cell_refinement       'CAD-4 EXPRESS and WINGX (Farrugia, 1999)'
_computing_data_collection
'CAD-4 EXPRESS (Duisenberg, 1992; Mac\'i\<cek & Yordanov, 1992)'
_computing_data_reduction        'MolEN (Fair, 1990)'
_computing_molecular_graphics    'DIAMOND (Brandenburg, 1998)'
_computing_publication_material  SHELXL97
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (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  'Enraf-Nonius CAD-4'
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_sigmaI/netI    0.022
_diffrn_reflns_limit_h_max       0
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       0
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            832
_diffrn_reflns_theta_full        29.94
_diffrn_reflns_theta_max         29.94
_diffrn_reflns_theta_min         2.39
_diffrn_standards_decay_%        0.5
_diffrn_standards_interval_time  120
_diffrn_standards_number         2
_exptl_absorpt_coefficient_mu    10.739
_exptl_absorpt_correction_T_max  0.643
_exptl_absorpt_correction_T_min  0.567
_exptl_absorpt_correction_type   '\y scan'
_exptl_absorpt_process_details   '(North et al., 1968)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    5.186
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             1441.5
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.04
_refine_diff_density_max         1.34
_refine_diff_density_min         -1.53
_refine_ls_extinction_coef       0.00129(12)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   1.184
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     66
_refine_ls_number_reflns         832
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.183
_refine_ls_R_factor_all          0.028
_refine_ls_R_factor_gt           0.023
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0389P)^2^+3.9495P] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.070
_refine_ls_wR_factor_ref         0.072
_reflns_number_gt                743
_reflns_number_total             832
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            br1369.cif
_cod_data_source_block           II
_cod_depositor_comments
;
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_database_code               2012855
_cod_database_fobs_code          2012855