Aza-boron-diquinomethene complexes bearing N-aryl chromophores: synthesis, crystal structures, tunable photophysics, the protonation effect and their application as pH sensors
Xiaolin Zhu; Hai Huang; Rui Liu; Xiaodong Jin; Yuhao Li; Danfeng Wang; Qiang Wang; Hongjun Zhu; Journal of Materials Chemistry C 3 (2015) 3774–3782; doi:10.1039/C4TC02955K

data_7234146
_publ_section_title
;
 Aza-boron-diquinomethene complexes bearing N-aryl chromophores:
 synthesis, crystal structures, tunable photophysics, the protonation
 effect and their application as pH sensors
;
_journal_name_full               'Journal of Materials Chemistry C'
_journal_page_first              3774
_journal_page_last               3782
_journal_paper_doi               10.1039/C4TC02955K
_journal_volume                  3
_journal_year                    2015
_chemical_formula_sum            'C18 H12 B F2 N3'
_chemical_formula_weight         319.12
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 93.52(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.1560(14)
_cell_length_b                   13.963(3)
_cell_length_c                   14.249(3)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      13
_cell_measurement_theta_min      9
_cell_volume                     1421.1(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Nonius CAD4'
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0626
_diffrn_reflns_av_sigmaI/netI    0.0425
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            5515
_diffrn_reflns_theta_full        25.40
_diffrn_reflns_theta_max         25.40
_diffrn_reflns_theta_min         2.04
_diffrn_standards_decay_%        1
_diffrn_standards_interval_count 200
_diffrn_standards_interval_time  2h
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.108
_exptl_absorpt_correction_T_max  0.9788
_exptl_absorpt_correction_T_min  0.9684
_exptl_absorpt_correction_type   psi-scan
_exptl_crystal_density_diffrn    1.492
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             656
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.241
_refine_diff_density_min         -0.241
_refine_diff_density_rms         0.061
_refine_ls_extinction_coef       0.094(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.003
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     218
_refine_ls_number_reflns         2604
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.003
_refine_ls_R_factor_all          0.0631
_refine_ls_R_factor_gt           0.0474
_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^)+(0.1000P)^2^+0.2400P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1453
_refine_ls_wR_factor_ref         0.1585
_reflns_number_gt                1997
_reflns_number_total             2604
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            J-Mater-Chem-C-2015-3-3774.cif
_cod_data_source_block           x
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the built-in table derived from the
CIF Core dictionary named 'cif_core.dic' version 2.4.5 last updated
on 2014-11-21.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      P21/C
_cod_database_code               7234146