Silanetriols as Powerful Starting Materials for Selective Condensation to Bulky POSS Cages.
Hurkes, Natascha; Bruhn, Clemens; Belaj, Ferdinand; Pietschnig, Rudolf; Organometallics 33 (2014) 7299–7306; doi:10.1021/om5010918

data_4084890
_publ_section_title
;
 Silanetriols as Powerful Starting Materials for Selective Condensation to
 Bulky POSS Cages.
;
_journal_issue                   24
_journal_name_full               Organometallics
_journal_page_first              7299
_journal_page_last               7306
_journal_paper_doi               10.1021/om5010918
_journal_volume                  33
_journal_year                    2014
_chemical_compound_source        'synthetical product'
_chemical_formula_moiety         'C48 H104 O12 Si8'
_chemical_formula_sum            'C48 H104 O12 Si8'
_chemical_formula_weight         1098.03
_chemical_name_systematic        ' octakis(1,1-dimethylbutyl)octasilsesquioxane'
_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   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           'manual edited SHELXL-97 .cif file'
_cell_angle_alpha                68.8952(11)
_cell_angle_beta                 87.8745(12)
_cell_angle_gamma                66.4831(11)
_cell_formula_units_Z            1
_cell_length_a                   10.8944(4)
_cell_length_b                   12.6042(4)
_cell_length_c                   13.4936(5)
_cell_measurement_reflns_used    9989
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      31.13
_cell_measurement_theta_min      3.25
_cell_volume                     1572.67(10)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'modified ORTEP (Johnson, 1965)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0168
_diffrn_reflns_av_sigmaI/netI    0.0159
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            26387
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         1.98
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.222
_exptl_absorpt_correction_T_max  0.7462
_exptl_absorpt_correction_T_min  0.6812
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.159
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             600
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.36
_refine_diff_density_max         0.519
_refine_diff_density_min         -0.365
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.055
_refine_ls_hydrogen_treatment    refU
_refine_ls_matrix_type           full
_refine_ls_number_parameters     339
_refine_ls_number_reflns         9065
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.055
_refine_ls_R_factor_all          0.0300
_refine_ls_R_factor_gt           0.0264
_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^)+(0.0397P)^2^+0.5414P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0742
_refine_ls_wR_factor_ref         0.0783
_reflns_number_gt                8236
_reflns_number_total             9065
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om5010918_si_002.cif
_cod_data_source_block           4c_NH260
_cod_depositor_comments
'Adding full bibliography for 4084885--4084891.cif.'
_cod_database_code               4084890