Large Cluster Formation through Multiple Substitution with Lanthanide Cations (La, Ce, Nd, Sm, Eu, and Gd) of the Polyoxoanion [(B-α-AsO3W9O30)4(WO2)4]28-. Synthesis and Structural Characterization
Knut Wassermann; Michael T. Pope; Inorganic Chemistry 40 (2001) 2763–2768; doi:10.1021/ic001233u

data_4319743
_publ_section_title
;
 Large Cluster Formation through Multiple Substitution with Lanthanide
 Cations (La, Ce, Nd, Sm, Eu, and Gd) of the Polyoxoanion
 [(B-\a-AsO3W9O30)4(WO2)4]28-. Synthesis and Structural Characterization
;
_journal_name_full               'Inorganic Chemistry'
_journal_page_first              2763
_journal_page_last               2768
_journal_paper_doi               10.1021/ic001233u
_journal_volume                  40
_journal_year                    2001
_chemical_formula_sum            'As4 Cl2 H124 Na30 O202 W40'
_chemical_formula_weight         11771.27
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   none
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                94.009(1)
_cell_angle_beta                 99.918(1)
_cell_angle_gamma                115.966(1)
_cell_formula_units_Z            2
_cell_length_a                   19.2004(2)
_cell_length_b                   19.5590(2)
_cell_length_c                   30.8717(2)
_cell_measurement_reflns_used    8192
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      28.29
_cell_measurement_theta_min      1.21
_cell_volume                     10128.3(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.940
_diffrn_measured_fraction_theta_max 0.940
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1017
_diffrn_reflns_av_sigmaI/netI    0.0996
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            110562
_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         1.21
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    23.466
_exptl_absorpt_correction_T_max  0.0963
_exptl_absorpt_correction_T_min  0.0267
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    3.860
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelogram
_exptl_crystal_F_000             10392
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.16
_refine_diff_density_max         14.569
_refine_diff_density_min         -11.493
_refine_diff_density_rms         0.814
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.110
_refine_ls_hydrogen_treatment    none
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1436
_refine_ls_number_reflns         47304
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.110
_refine_ls_R_factor_all          0.1567
_refine_ls_R_factor_gt           0.1078
_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^)+(0.0379P)^2^+2773.8672P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2212
_refine_ls_wR_factor_ref         0.2559
_reflns_number_gt                32997
_reflns_number_total             47304
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ic001233u_1.cif
_cod_data_source_block           As4W40
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_formula_sum        'H124 As4 Cl2 Na30 O202 W40'
_cod_database_code               4319743