Rb~2~Sb~4~O~11~
Kalpana, Govindaraasan; Weller, Mark T.; Acta Crystallographica Section E 65 (2009) i41–; doi:10.1107/S1600536809016109

data_2222175
_publ_section_title
;
 Rb~2~Sb~4~O~11~
;
_journal_coeditor_code           WM2230
_journal_issue                   6
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              i41
_journal_paper_doi               10.1107/S1600536809016109
_journal_volume                  65
_journal_year                    2009
_chemical_formula_iupac          'Rb2 Sb4 O11'
_chemical_formula_structural     'Rb2 (Sb4 O11)'
_chemical_formula_sum            'O11 Rb2 Sb4'
_chemical_formula_weight         833.94
_chemical_name_systematic
;
Dirubidium tetraantimonate(V)
;
_space_group_IT_number           12
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2y'
_symmetry_space_group_name_H-M   'C 1 2/m 1'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.00
_cell_angle_beta                 95.203(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.5045(11)
_cell_length_b                   7.5681(4)
_cell_length_c                   7.2115(4)
_cell_measurement_reflns_used    1307
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.91
_cell_volume                     1060.12(10)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997) and COLLECT (Nonius, 1998)'
_computing_data_collection       'COLLECT (Nonius, 1998)'
_computing_data_reduction
'DENZO (Otwinowski & Minor, 1997) and COLLECT (Nonius, 1998)'
_computing_molecular_graphics    'DIAMOND (Brandenburg, 2006)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      120(2)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f and \w'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0384
_diffrn_reflns_av_sigmaI/netI    0.0325
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            7605
_diffrn_reflns_theta_full        27.55
_diffrn_reflns_theta_max         27.55
_diffrn_reflns_theta_min         3.68
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    19.257
_exptl_absorpt_correction_T_max  0.120
_exptl_absorpt_correction_T_min  0.110
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
(SADABS; Sheldrick, 2007)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    5.225
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1464
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.11
_refine_diff_density_max         1.894
_refine_diff_density_min         -1.909
_refine_ls_extinction_coef       0.00092(9)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL97 (Sheldrick, 2008)'
_refine_ls_goodness_of_fit_ref   1.407
_refine_ls_matrix_type           full
_refine_ls_number_parameters     91
_refine_ls_number_reflns         1312
_refine_ls_number_restraints     18
_refine_ls_restrained_S_all      1.397
_refine_ls_R_factor_all          0.0303
_refine_ls_R_factor_gt           0.0277
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.029P)^2^+1.4332P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0686
_refine_ls_wR_factor_ref         0.0720
_reflns_number_gt                1234
_reflns_number_total             1312
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            wm2230.cif
_cod_data_source_block           I
_cod_original_sg_symbol_H-M      'C 2/m'
_cod_database_code               2222175
_cod_database_fobs_code          2222175