Synthesis and derivatisation of ceric tris(tert-butoxy)siloxides
Friedrich, Jochen; Maichle-moessmer, Caecilia; Anwander, Reiner; Chem. Commun.  (2017) –; doi:10.1039/C7CC06499C

data_7120777
_publ_section_title
;
 Synthesis and derivatisation of ceric tris(tert-butoxy)siloxides
;
_journal_name_full               'Chem. Commun.'
_journal_paper_doi               10.1039/C7CC06499C
_journal_year                    2017
_chemical_formula_sum            'C47 H104 Ce O15.5 Si3'
_chemical_formula_weight         1141.69
_chemical_properties_physical    Air-sensitive
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2017-08-08 deposited with the CCDC.
2017-10-11 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 99.748(2)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   46.814(3)
_cell_length_b                   13.9872(9)
_cell_length_c                   19.1160(12)
_cell_measurement_reflns_used    9687
_cell_measurement_temperature    103(2)
_cell_measurement_theta_max      28.66
_cell_measurement_theta_min      2.192
_cell_volume                     12336.4(14)
_computing_cell_refinement       'SAINT V8.37A (Bruker AXS Inc., 2015)'
_computing_data_collection       'APEX3 v2016.5-0 (Bruker AXS)'
_computing_data_reduction        'SAINT V8.37A (Bruker AXS Inc., 2015)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'XT, VERSION 2014/5,SHELXS-13 (Sheldrick 2008)'
_diffrn_ambient_temperature      103(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Bruker APEX II DUO'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0484
_diffrn_reflns_av_unetI/netI     0.0242
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       63
_diffrn_reflns_limit_h_min       -63
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            149656
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.816
_diffrn_reflns_theta_min         1.822
_diffrn_source                   'ImuS-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.852
_exptl_absorpt_correction_T_max  0.7458
_exptl_absorpt_correction_T_min  0.6765
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadbas
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.229
_exptl_crystal_description       block
_exptl_crystal_F_000             4880
_exptl_crystal_size_max          0.360
_exptl_crystal_size_mid          0.304
_exptl_crystal_size_min          0.217
_refine_diff_density_max         1.796
_refine_diff_density_min         -0.671
_refine_diff_density_rms         0.074
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     802
_refine_ls_number_reflns         16059
_refine_ls_number_restraints     848
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0373
_refine_ls_R_factor_gt           0.0296
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0291P)^2^+21.8212P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0674
_refine_ls_wR_factor_ref         0.0712
_reflns_Friedel_coverage         0.000
_reflns_number_gt                13968
_reflns_number_total             16059
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7cc06499c2.cif
_cod_data_source_block           4a_mo_JF265a_0ma
_cod_original_cell_volume        12336.3(14)
_cod_original_formula_sum        'C47 H104 Ce O15.50 Si3'
_cod_database_code               7120777
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.749
_shelx_estimated_absorpt_t_max   0.837
_shelx_res_checksum              492