Direct functionalization at the boron center of antiaromatic chloroborole.
Braunschweig, Holger; Kupfer, Thomas; Chemical communications (Cambridge, England)  (2008) 4487–4489; doi:10.1039/b808483a

data_7103368
_publ_section_title
;
 Direct functionalization at the boron center of antiaromatic
 chloroborole.
;
_journal_issue                   37
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              4487
_journal_page_last               4489
_journal_paper_doi               10.1039/b808483a
_journal_year                    2008
_chemical_formula_moiety         'C34 H38 B N Si2'
_chemical_formula_sum            'C34 H38 B N Si2'
_chemical_formula_weight         527.64
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 102.334(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   12.5821(6)
_cell_length_b                   11.4550(6)
_cell_length_c                   22.2650(11)
_cell_measurement_reflns_used    7504
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.78
_cell_measurement_theta_min      2.47
_cell_volume                     3134.9(3)
_computing_cell_refinement       'Saint+ ver. 7.12A (Bruker AXS)'
_computing_data_collection       'APEX2 ver. 1.0-27 (Bruker AXS)'
_computing_data_reduction        'Saint+ ver. 7.12A (Bruker AXS)'
_computing_molecular_graphics    'XP ver. 5.1 (Bruker AXS, 1998)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  'multi-layer mirror'
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0836
_diffrn_reflns_av_sigmaI/netI    0.0893
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            50371
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         1.87
_exptl_absorpt_coefficient_mu    0.135
_exptl_absorpt_correction_T_max  0.9989
_exptl_absorpt_correction_T_min  0.9812
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs 2004/1 (Brucker Nonius 2004)'
_exptl_crystal_colour            red
_exptl_crystal_density_diffrn    1.118
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1128
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.374
_refine_diff_density_min         -0.449
_refine_diff_density_rms         0.059
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.015
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     343
_refine_ls_number_reflns         6144
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.015
_refine_ls_R_factor_all          0.1162
_refine_ls_R_factor_gt           0.0542
_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^)+(0.0229P)^2^+3.4003P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0897
_refine_ls_wR_factor_ref         0.1064
_reflns_number_gt                3853
_reflns_number_total             6144
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b808483a.txt
_cod_data_source_block           Cu100
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7103368