Synthesis, Absorption, and Electrochemical Properties of Quinoid-Type Bisboron Complexes with Highly Symmetrical Structures.
Kubota, Yasuhiro; Niwa, Takahiro; Jin, Jiye; Funabiki, Kazumasa; Matsui, Masaki; Organic letters 17 (2015) 3174–3177; doi:10.1021/acs.orglett.5b01547

data_1520523
_publ_contact_author             'Yasuhiro Kubota'
_publ_section_title
;
 Synthesis, Absorption, and Electrochemical Properties of Quinoid-Type
 Bisboron Complexes with Highly Symmetrical Structures.
;
_journal_issue                   12
_journal_name_full               'Organic letters'
_journal_page_first              3174
_journal_page_last               3177
_journal_paper_doi               10.1021/acs.orglett.5b01547
_journal_volume                  17
_journal_year                    2015
_chemical_formula_moiety         'C42 H36 B2 N2 O2'
_chemical_formula_sum            'C42 H36 B2 N2 O2'
_chemical_formula_weight         622.35
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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                 96.406(9)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.0540(13)
_cell_length_b                   17.672(4)
_cell_length_c                   13.751(3)
_cell_measurement_temperature    293(2)
_cell_volume                     1703.5(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.979
_diffrn_measured_fraction_theta_max 0.979
_diffrn_measurement_device_type  'Rigaku XtaLAB mini'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0328
_diffrn_reflns_av_sigmaI/netI    0.0240
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            17168
_diffrn_reflns_theta_full        27.56
_diffrn_reflns_theta_max         27.56
_diffrn_reflns_theta_min         2.75
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_T_max  0.9855
_exptl_absorpt_correction_T_min  0.9855
_exptl_absorpt_correction_type   integration
_exptl_crystal_density_diffrn    1.213
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             656
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.163
_refine_diff_density_min         -0.157
_refine_diff_density_rms         0.033
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     219
_refine_ls_number_reflns         3854
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0807
_refine_ls_R_factor_gt           0.0553
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0751P)^2^+0.2876P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1381
_refine_ls_wR_factor_ref         0.1572
_reflns_number_gt                2749
_reflns_number_total             3854
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol5b01547_si_002.cif
_cod_data_source_block           4_BPh2_BPh2
_cod_depositor_comments
'Adding full bibliography for 1520522--1520523.cif.'
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               1520523