Ambiphilic boron in 1,4,2,5-diazadiborinine
Baolin Wang; Yongxin Li; Rakesh Ganguly; Hajime Hirao; Rei Kinjo; Nature Communications 7 (2016) 11871–; doi:10.1038/ncomms11871

data_1548256
_publ_section_title
;
 Ambiphilic boron in 1,4,2,5-diazadiborinine
;
_journal_name_full               'Nature Communications'
_journal_page_first              11871
_journal_paper_doi               10.1038/ncomms11871
_journal_volume                  7
_journal_year                    2016
_chemical_formula_sum            'C20 H20 B2 Cl2 N4'
_chemical_formula_weight         408.92
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_cell_angle_alpha                76.647(3)
_cell_angle_beta                 85.978(2)
_cell_angle_gamma                66.7788(19)
_cell_formula_units_Z            1
_cell_length_a                   6.7243(2)
_cell_length_b                   8.4506(4)
_cell_length_c                   9.7798(4)
_cell_measurement_reflns_used    3256
_cell_measurement_temperature    103.(2)
_cell_measurement_theta_max      29.8138
_cell_measurement_theta_min      3.0441
_cell_volume                     496.77(4)
_computing_cell_refinement       'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_data_collection       'APEX2 (Bruker AXS Inc., 2014)'
_computing_data_reduction        'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_molecular_graphics    'XP (Bruker AXS Inc., 2014)'
_computing_publication_material  'APEX2 (Bruker AXS Inc., 2014)'
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_diffrn_ambient_temperature      103.(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0641
_diffrn_reflns_av_unetI/netI     0.0569
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            14248
_diffrn_reflns_theta_full        31.41
_diffrn_reflns_theta_max         31.41
_diffrn_reflns_theta_min         2.69
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.340
_exptl_absorpt_correction_T_max  0.95
_exptl_absorpt_correction_T_min  0.86
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2014/4 (Bruker AXS Inc.)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.367
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             212
_exptl_crystal_size_max          0.300
_exptl_crystal_size_mid          0.180
_exptl_crystal_size_min          0.150
_refine_diff_density_max         0.391
_refine_diff_density_min         -0.367
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     128
_refine_ls_number_reflns         3279
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.025
_refine_ls_R_factor_all          0.0722
_refine_ls_R_factor_gt           0.0475
_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^)+(0.0569P)^2^+0.2080P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1146
_refine_ls_wR_factor_ref         0.1259
_reflns_number_gt                2452
_reflns_number_total             3279
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ncomms11871-s2.cif
_cod_data_source_block           I
_cod_original_cell_volume        496.77(3)
_cod_database_code               1548256
_shelx_res_checksum              27245
_shelx_hkl_checksum              41634