Uranium Pyrophosphate/Methylenediphosphonate Polyoxometalate Cage Clusters
Jie Ling; Jie Qiu; Ginger E. Sigmon; Matthew Ward; Jennifer E. S. Szymanowski; Peter C. Burns; Journal of the American Chemical Society 132 (2010) 13395–13402; doi:10.1021/ja1048219

data_4103088
_publ_section_title
;
 Uranium Pyrophosphate/Methylenediphosphonate Polyoxometalate Cage
 Clusters
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13395
_journal_page_last               13402
_journal_paper_doi               10.1021/ja1048219
_journal_volume                  132
_journal_year                    2010
_chemical_formula_moiety         K10[(UO2)20(O2)24(P2O7)6](H2O)4
_chemical_formula_sum            'K10 O134 P12 U20'
_chemical_formula_weight         7667.24
_chemical_name_common            U20Py6a
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           64
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-C 2ac 2'
_symmetry_space_group_name_H-M   'C m c e'
_atom_sites_solution_hydrogens   none
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   29.819(2)
_cell_length_b                   27.014(2)
_cell_length_c                   26.777(2)
_cell_measurement_reflns_used    5569
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      20.56
_cell_measurement_theta_min      1.27
_cell_volume                     21570(3)
_computing_cell_refinement       'SMART SAINT'
_computing_data_collection       SMART
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXP-97 (Sheldrick, 1997)'
_computing_publication_material  'SHELCIF-97 (Sheldrick, 2000)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_detector_area_resol_mean 0
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker APEX'
_diffrn_measurement_method       '0.3 wide w/ exposures'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0340
_diffrn_reflns_limit_h_max       29
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            5569
_diffrn_reflns_theta_full        20.56
_diffrn_reflns_theta_max         20.56
_diffrn_reflns_theta_min         1.27
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count N/A
_diffrn_standards_interval_time  N/A
_diffrn_standards_number         N/A
_exptl_absorpt_coefficient_mu    15.314
_exptl_absorpt_correction_T_max  0.494
_exptl_absorpt_correction_T_min  0.358
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.361
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             13128
_exptl_crystal_size_max          0.072
_exptl_crystal_size_mid          0.058
_exptl_crystal_size_min          0.046
_refine_diff_density_max         3.808
_refine_diff_density_min         -1.698
_refine_diff_density_rms         0.308
_refine_ls_extinction_coef       0.000004(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.173
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     244
_refine_ls_number_reflns         5569
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.173
_refine_ls_R_factor_all          0.0530
_refine_ls_R_factor_gt           0.0469
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0973P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1499
_refine_ls_wR_factor_ref         0.1527
_reflns_number_gt                4625
_reflns_number_total             5569
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja1048219_si_003.cif
_cod_data_source_block           cmca
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'n/a' 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 

2021-11-22
Space group name changed to comply with IUCR recomendations
                 miguel
;
_cod_original_sg_symbol_H-M   'C m c a'
_cod_original_cell_volume        21569(3)
_cod_database_code               4103088