Isolation of Intermediate-Valent Ce(III)/Ce(IV) Hydrolysis Products in the Preparation of Cerium Iodates: Electronic and Structural Aspects of Ce2(IO3)6(OHx) (x≈ 0 and 0.44)
Sykora, Richard E.; Deakin, Laura; Mar, Arthur; Skanthakumar, S.; Soderholm, L.; Albrecht-Schmitt, Thomas E.; Chemistry of Materials 16 (2004) 1343–; doi:10.1021/cm035147e

data_4001612
_publ_section_title
;
 Isolation of Intermediate-Valent Ce(III)/Ce(IV) Hydrolysis Products in
 the Preparation of Cerium Iodates:&#x00A0; Electronic and Structural
 Aspects of Ce2(IO3)6(OHx) (x&#x2248; 0 and 0.44)
;
_journal_issue                   7
_journal_name_full               'Chemistry of Materials'
_journal_page_first              1343
_journal_paper_doi               10.1021/cm035147e
_journal_volume                  16
_journal_year                    2004
_chemical_formula_sum            'Ce2 H0.5 I6 O19'
_chemical_formula_weight         1345.64
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           62
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2n'
_symmetry_space_group_name_H-M   'P n m a'
_atom_sites_solution_hydrogens   geom
_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                   6.8534(4)
_cell_length_b                   16.9885(10)
_cell_length_c                   14.2404(8)
_cell_measurement_reflns_used    all
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      28.27
_cell_measurement_theta_min      1.87
_cell_volume                     1658.00(17)
_computing_cell_refinement       'SMART, SAINT'
_computing_data_collection       SMART
_computing_data_reduction        SAINT
_computing_molecular_graphics    'SHELXP-97 (Sheldrick, 1997)'
_computing_publication_material  'SHELXCIF-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0276
_diffrn_reflns_av_sigmaI/netI    0.0161
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            15844
_diffrn_reflns_theta_full        28.27
_diffrn_reflns_theta_max         28.27
_diffrn_reflns_theta_min         1.87
_diffrn_standards_interval_count na
_diffrn_standards_interval_time  na
_diffrn_standards_number         na
_exptl_absorpt_coefficient_mu    16.694
_exptl_absorpt_correction_T_max  '0.669891 ratio of min/max'
_exptl_absorpt_correction_T_min  '0.669891 ratio of min/max'
_exptl_absorpt_correction_type   'analytical, multiscan (SADABS)'
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    5.391
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2344
_exptl_crystal_size_max          0.250
_exptl_crystal_size_mid          0.182
_exptl_crystal_size_min          0.152
_refine_diff_density_max         1.392
_refine_diff_density_min         -1.229
_refine_diff_density_rms         0.247
_refine_ls_extinction_coef       0.00058(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   1.563
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     131
_refine_ls_number_reflns         2119
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.563
_refine_ls_R_factor_all          0.0303
_refine_ls_R_factor_gt           0.0302
_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^)+(0.0000P)^2^+27.0233P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0646
_refine_ls_wR_factor_ref         0.0646
_reflns_number_gt                2117
_reflns_number_total             2119
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cm035147esi20040205_090253.cif
_cod_data_source_block           facefinal
_cod_original_sg_symbol_H-M      Pnma
_cod_original_formula_sum        'Ce2 I6 O19 H0.5'
_cod_database_code               4001612