Near-Infrared Absorbing Azo Dyes: Synthesis and X-ray Crystallographic and Spectral Characterization of Monoazopyrroles, Bisazopyrroles, and a Boron-Azopyrrole Complex
Yan Li; Brian O. Patrick; David Dolphin; Journal of Organic Chemistry 74 (2009) 5237–5243; doi:10.1021/jo9003019

data_4024656
_publ_section_title
;
Near-Infrared Absorbing Azo Dyes: Synthesis and X-ray Crystallographic and
Spectral Characterization of Monoazopyrroles, Bisazopyrroles, and a
Boron-Azopyrrole Complex
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5237
_journal_page_last               5243
_journal_paper_doi               10.1021/jo9003019
_journal_volume                  74
_journal_year                    2009
_chemical_formula_sum            'C20 H22 B F2 N7'
_chemical_formula_weight         409.26
_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                 97.465(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.797(3)
_cell_length_b                   7.9430(10)
_cell_length_c                   14.246(2)
_cell_measurement_reflns_used    7175
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      22.06
_cell_measurement_theta_min      2.81
_cell_volume                     1996.8(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Bruker X8 APEX'
_diffrn_measurement_method       'area detector'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0509
_diffrn_reflns_av_sigmaI/netI    0.0417
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            55238
_diffrn_reflns_theta_full        27.92
_diffrn_reflns_theta_max         27.92
_diffrn_reflns_theta_min         1.15
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_T_max  0.990
_exptl_absorpt_correction_T_min  0.866
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            brown
_exptl_crystal_density_diffrn    1.361
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             856
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.186
_refine_diff_density_min         -0.181
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     275
_refine_ls_number_reflns         4716
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0709
_refine_ls_R_factor_gt           0.0408
_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^)+(0.0469P)^2^+0.4094P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0976
_refine_ls_wR_factor_ref         0.1107
_reflns_number_gt                3218
_reflns_number_total             4716
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo9003019_si_005.cif
_cod_data_source_block           4
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4024656