Modification at a boron unit: tuning electronic and optical properties of pi-conjugated acyclic anion receptors.
Maeda, Hiromitsu; Takayama, Mayumi; Kobayashi, Kazuki; Shinmori, Hideyuki; Organic & biomolecular chemistry 8 (2010) 4308–4315; doi:10.1039/c0ob00044b

data_7153416
_publ_section_title
;
 Modification at a boron unit: tuning electronic and optical properties of
 pi-conjugated acyclic anion receptors.
;
_journal_issue                   19
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              4308
_journal_page_last               4315
_journal_paper_doi               10.1039/c0ob00044b
_journal_volume                  8
_journal_year                    2010
_chemical_formula_sum            'C43 H43 B N2 O2'
_chemical_formula_weight         630.60
_chemical_name_systematic
;
?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                78.919(11)
_cell_angle_beta                 88.635(14)
_cell_angle_gamma                77.553(13)
_cell_formula_units_Z            2
_cell_length_a                   9.827(4)
_cell_length_b                   11.506(3)
_cell_length_c                   15.784(5)
_cell_measurement_temperature    123(2)
_cell_volume                     1710.0(10)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_detector_area_resol_mean 10
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       \w
_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  0.0478
_diffrn_reflns_av_sigmaI/netI    0.0700
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            16251
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         3.10
_exptl_absorpt_coefficient_mu    0.074
_exptl_absorpt_correction_T_max  0.9926
_exptl_absorpt_correction_T_min  0.9782
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.225
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             672
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.331
_refine_diff_density_min         -0.274
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     437
_refine_ls_number_reflns         7743
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0946
_refine_ls_R_factor_gt           0.0536
_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^)+(0.0703P)^2^+0.0831P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1221
_refine_ls_wR_factor_ref         0.1470
_reflns_number_gt                5051
_reflns_number_total             7743
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0ob00044b.txt
_cod_data_source_block           90528mae
_cod_original_sg_symbol_H-M      'P - 1'
_cod_database_code               7153416