Tetra-functional double-decker silsesquioxanes as anchors for reactive functional groups and potential synthons for hybrid materials
Mituła, K.; Duszczak, J.; Brząkalski, D.; Dudziec, B.; Kubicki, M.; Marciniec, B.; Chem. Commun.  (2017) –; doi:10.1039/C7CC03958A

data_7120624
_publ_section_title
;
 Tetra-functional double-decker silsesquioxanes as anchors for reactive
 functional groups and potential synthons for hybrid materials
;
_journal_name_full               'Chem. Commun.'
_journal_paper_doi               10.1039/C7CC03958A
_journal_year                    2017
_chemical_formula_moiety         'C64 H76 O14 Si12'
_chemical_formula_sum            'C64 H76 O14 Si12'
_chemical_formula_weight         1406.32
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_audit_update_record
;
2016-09-08 deposited with the CCDC.
2017-09-06 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.927(2)
_cell_length_b                   21.826(3)
_cell_length_c                   26.008(4)
_cell_measurement_reflns_used    7358
_cell_measurement_temperature    100(1)
_cell_measurement_theta_max      27.7510
_cell_measurement_theta_min      3.1360
_cell_volume                     7338.0(19)
_computing_cell_refinement       'CrysAlis Pro (Agilent Technologies (2011))'
_computing_data_collection       'CrysAlis Pro (Agilent Technologies (2011))'
_computing_data_reduction        'CrysAlis Pro (Agilent Technologies (2011))'
_computing_molecular_graphics    'Mercur (MacRae, 2007)'
_computing_publication_material  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SIR92 (Altomare et al., 1993)'
_diffrn_ambient_temperature      100(1)
_diffrn_detector_area_resol_mean 16.1544
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Xcalibur, Eos'
_diffrn_measurement_method       '\w scan'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.0342
_diffrn_reflns_av_unetI/netI     0.0760
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            20636
_diffrn_reflns_point_group_measured_fraction_full 0.942
_diffrn_reflns_point_group_measured_fraction_max 0.942
_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         25.000
_diffrn_reflns_theta_min         2.902
_exptl_absorpt_coefficient_mu    0.270
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.97573
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.36.28 (release 01-02-2013 CrysAlis171 .NET)
(compiled Feb  1 2013,16:14:44)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.273
_exptl_crystal_description       block
_exptl_crystal_F_000             2960
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.311
_refine_diff_density_min         -0.336
_refine_diff_density_rms         0.063
_refine_ls_abs_structure_details
;
 Flack x determined using 3680 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons and Flack (2004), Acta Cryst. A60, s61).
;
_refine_ls_abs_structure_Flack   -0.09(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     819
_refine_ls_number_reflns         12187
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0643
_refine_ls_R_factor_gt           0.0468
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0319P)^2^+1.3136P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0863
_refine_ls_wR_factor_ref         0.0928
_reflns_Friedel_coverage         0.718
_reflns_Friedel_fraction_full    0.875
_reflns_Friedel_fraction_max     0.875
_reflns_number_gt                10117
_reflns_number_total             12187
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c7cc03958a4.cif
_cod_data_source_block           1
_cod_original_cell_volume        7338(2)
_cod_database_code               7120624