Crystal Structure of Sodium-Strontium Paratungstate B, Na6Sr2[W12O40(OH)2].24H2O.
Sergii V. Radio; Nadija I. Gumerova; Vyacheslav N. Baumer; Journal of Structural Chemistry 54 (2013) 97–103; doi:

data_1519107
_publ_section_title
;
 Crystal Structure of Sodium-Strontium Paratungstate B,
 Na6Sr2[W12O40(OH)2].24H2O.
;
_journal_name_full               'Journal of Structural Chemistry'
_journal_page_first              97
_journal_page_last               103
_journal_volume                  54
_journal_year                    2013
_chemical_formula_moiety         '6Na, 2Sr, [WO40(OH)2], 24(H2O)'
_chemical_formula_sum            'H50 Na6 O66 Sr2 W12'
_chemical_formula_weight         3625.78
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 93.440(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   12.5435(3)
_cell_length_b                   12.1544(3)
_cell_length_c                   18.8080(4)
_cell_measurement_temperature    293(2)
_cell_volume                     2862.28(12)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.9
_diffrn_measurement_device_type  'Xcalibur-3 (Oxford Diffraction Ltd.)'
_diffrn_measurement_method       \w/\q-scans
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0555
_diffrn_reflns_av_unetI/netI     0.0652
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            31652
_diffrn_reflns_theta_full        30
_diffrn_reflns_theta_max         32.54
_diffrn_reflns_theta_min         3.25
_exptl_absorpt_coefficient_mu    26.026
_exptl_absorpt_correction_T_max  0.1117
_exptl_absorpt_correction_T_min  0.0396
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    4.207
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             3216
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.879
_refine_diff_density_min         -1.811
_refine_diff_density_rms         0.336
_refine_ls_extinction_coef       0.000604(7)
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.979
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     389
_refine_ls_number_reflns         9354
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.979
_refine_ls_R_factor_all          0.0469
_refine_ls_R_factor_gt           0.0274
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0030P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.0446
_reflns_number_gt                6913
_reflns_number_total             9354
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            JSC-2013-54-97-103.cif
_cod_data_source_block           d7_icsd
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 3105 2015-03-04 15:46:00Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               1519107