Reversible [4 + 2] cycloaddition reaction of 1,3,2,5-diazadiborinine with ethylene
Wu, Di; Ganguly, Rakesh; Li, Yongxin; Hoo, Sin Ni; Hirao, Hajime; Kinjo, Rei; Chem. Sci. 6 (2015) 7150–; doi:10.1039/C5SC03174E

data_1532492
_publ_section_title
;
 Reversible [4 + 2] cycloaddition reaction of 1,3,2,5-diazadiborinine with
 ethylene
;
_journal_issue                   12
_journal_name_full               'Chem. Sci.'
_journal_page_first              7150
_journal_paper_doi               10.1039/C5SC03174E
_journal_volume                  6
_journal_year                    2015
_chemical_formula_sum            'C31 H36 B2 N2 O2'
_chemical_formula_weight         490.24
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_audit_update_record
;
2015-08-14 deposited with the CCDC.
2015-09-23 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 94.119(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.498(2)
_cell_length_b                   9.090(2)
_cell_length_c                   30.647(7)
_cell_measurement_reflns_used    6659
_cell_measurement_temperature    103.(2)
_cell_measurement_theta_max      24.9652
_cell_measurement_theta_min      2.6071
_cell_volume                     2639.1(10)
_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)'
_computing_structure_solution    'SHELXT (Bruker AXS Inc., 2014)'
_diffrn_ambient_temperature      103.(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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_unetI/netI     0.0677
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       36
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            4811
_diffrn_reflns_theta_full        25.34
_diffrn_reflns_theta_max         25.34
_diffrn_reflns_theta_min         2.61
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.075
_exptl_absorpt_correction_T_max  0.97
_exptl_absorpt_correction_T_min  0.68
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'TWINABS V2012/1'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.234
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1048
_exptl_crystal_size_max          0.420
_exptl_crystal_size_mid          0.400
_exptl_crystal_size_min          0.360
_refine_diff_density_max         0.280
_refine_diff_density_min         -0.365
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.013
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     339
_refine_ls_number_reflns         4811
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.013
_refine_ls_R_factor_all          0.0938
_refine_ls_R_factor_gt           0.0595
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0855P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1419
_refine_ls_wR_factor_ref         0.1579
_reflns_number_gt                3214
_reflns_number_total             4811
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c5sc03174e2.cif
_cod_data_source_block           I
_cod_depositor_comments
'Adding full bibliography for 1532490--1532494.cif.'
_cod_original_cell_volume        2639.1(11)
_cod_database_code               1532492
_shelx_res_checksum              18367