Thia- and Selenasilaboriranes and 1,3,2,4-Dioxasilaboretane from a Stable Silaborene
Nakata, Norio; Sekiguchi, Akira; Chemistry Letters 36 (2007) 662–; doi:10.1246/cl.2007.662

data_8000172
_publ_section_title
;
 Thia- and Selenasilaboriranes and 1,3,2,4-Dioxasilaboretane from a Stable
 Silaborene
;
_journal_issue                   5
_journal_name_full               'Chemistry Letters'
_journal_page_first              662
_journal_paper_doi               10.1246/cl.2007.662
_journal_volume                  36
_journal_year                    2007
_chemical_formula_moiety         'C27 H60 B N O2 Si3'
_chemical_formula_sum            'C27 H60 B N O2 Si3'
_chemical_formula_weight         525.84
_chemical_name_common            'SiOBO ring'
_chemical_name_systematic
; 
 SiOBO ring 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 102.371(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.4160(7)
_cell_length_b                   17.6290(11)
_cell_length_c                   16.8930(6)
_cell_measurement_temperature    120(2)
_cell_volume                     3320.8(3)
_computing_cell_refinement       'HKL scalepack'
_computing_data_collection       'MacScience Xpress'
_computing_data_reduction        Denzo
_computing_molecular_graphics    ORTEP
_computing_publication_material  CIFTAB
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR97
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.972
_diffrn_measured_fraction_theta_max 0.972
_diffrn_measurement_device_type  'MacScience DIP2030 Image plate'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0516
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            7813
_diffrn_reflns_theta_full        28.03
_diffrn_reflns_theta_max         28.03
_diffrn_reflns_theta_min         2.16
_exptl_absorpt_coefficient_mu    0.165
_exptl_absorpt_correction_T_max  0.9757
_exptl_absorpt_correction_T_min  0.9599
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.052
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1168
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.442
_refine_diff_density_min         -0.452
_refine_diff_density_rms         0.085
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.996
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     325
_refine_ls_number_reflns         7813
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.996
_refine_ls_R_factor_all          0.0785
_refine_ls_R_factor_gt           0.0580
_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^)+(0.1137P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1564
_refine_ls_wR_factor_ref         0.1679
_reflns_number_gt                5646
_reflns_number_total             7813
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            36-662sup3.cif
_cod_data_source_block           SiOBO
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               8000172