Boron-based donor-spiro-acceptor compounds exhibiting thermally activated delayed fluorescence (TADF).
Stanoppi, Marco; Lorbach, Andreas; Dalton transactions (Cambridge, England : 2003) 47 (2018) 10394–10398; doi:10.1039/c8dt01255e

data_7046224
_publ_section_title
;
 Boron-based donor-spiro-acceptor compounds exhibiting thermally activated
 delayed fluorescence (TADF).
;
_journal_issue                   31
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              10394
_journal_page_last               10398
_journal_paper_doi               10.1039/c8dt01255e
_journal_volume                  47
_journal_year                    2018
_chemical_formula_moiety         'C24 H17 B F2 N2'
_chemical_formula_sum            'C24 H17 B F2 N2'
_chemical_formula_weight         382.20
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_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
_audit_creation_date             2017-12-20
_audit_creation_method
;
Olex2 1.2
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_audit_update_record
;
2018-03-16 deposited with the CCDC.
2018-05-02 downloaded from the CCDC.
;
_cell_angle_alpha                72.129(5)
_cell_angle_beta                 79.861(5)
_cell_angle_gamma                78.732(5)
_cell_formula_units_Z            2
_cell_length_a                   9.0580(6)
_cell_length_b                   10.2042(7)
_cell_length_c                   10.5865(7)
_cell_measurement_reflns_used    14347
_cell_measurement_temperature    100(1)
_cell_measurement_theta_max      30.20
_cell_measurement_theta_min      2.12
_cell_volume                     906.25(11)
_computing_cell_refinement       'STOE X-AREA'
_computing_data_collection       'STOE X-AREA'
_computing_data_reduction        'STOE X-RED'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(1)
_diffrn_detector                 'image plate (34 cm diameter)'
_diffrn_detector_area_resol_mean 6.67
_diffrn_detector_type            STOE
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       '2-circle goniometer'
_diffrn_measurement_device_type  'STOE IPDS 2T'
_diffrn_measurement_method       'rotation method'
_diffrn_radiation_collimation    '0.5 mm diameter, monocapillary'
_diffrn_radiation_monochromator  'plane graphite'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0304
_diffrn_reflns_av_unetI/netI     0.0280
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            13692
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.054
_diffrn_reflns_theta_min         2.311
_diffrn_source
'sealed X-ray tube, 12 x 0.4 mm long-fine focus'
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_T_max  1.02380
_exptl_absorpt_correction_T_min  0.91777
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'MULABS / PLATON Spek, A.L. (2003). J. Appl. Cryst. 36, 7-13. Spek, A.L. (2009). Acta Cryst. D65, 148-155.'
_exptl_crystal_colour            orange
_exptl_crystal_colour_primary    orange
_exptl_crystal_density_diffrn    1.401
_exptl_crystal_description       block
_exptl_crystal_F_000             396
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.273
_refine_diff_density_min         -0.218
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.099
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     307
_refine_ls_number_reflns         4820
_refine_ls_number_restraints     51
_refine_ls_restrained_S_all      1.093
_refine_ls_R_factor_all          0.0569
_refine_ls_R_factor_gt           0.0460
_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^)+(0.0437P)^2^+0.6292P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1228
_refine_ls_wR_factor_ref         0.1264
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3983
_reflns_number_total             4820
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8dt01255e3.cif
_cod_data_source_block           AL41
_cod_depositor_comments
'Adding full bibliography for 7046223--7046226.cif.'
_cod_database_code               7046224
_shelxl_version_number           2013-4
_shelx_estimated_absorpt_t_max   0.981
_shelx_estimated_absorpt_t_min   0.954
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2. Restrained planarity
 F1A, F2A, N1A, C1A, C2A, C3A, C4A, C5A, C6A, C7A, C8A, C9A, C10A, C11A, H4A,
 H8A, H9A, H10A
 with sigma of 0.1
3. Uiso/Uaniso restraints and constraints
Uiso(F1A) = Uiso(F2A) = Uiso(N1A) = Uiso(C1A) = Uiso(C2A) = Uiso(C3A) =
Uiso(C4A) = Uiso(C5A) = Uiso(C6A) = Uiso(C7A) = Uiso(C8A) = Uiso(C9A) =
Uiso(C10A) = Uiso(C11A)
4. Same fragment restrains
{F1, F2, N1, C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11} sigma for 1-2: 0.01,
1-3: 0.01
as
{F1A, F2A, N1A, C1A, C2A, C3A, C4A, C5A, C6A, C7A, C8A, C9A, C10A, C11A}
5. Others
 Sof(F1A)=Sof(F2A)=Sof(N1A)=Sof(C1A)=Sof(C2A)=Sof(H2A)=Sof(C3A)=Sof(C4A)=
 Sof(H4A)=Sof(C5A)=Sof(C6A)=Sof(C7A)=Sof(C8A)=Sof(H8A)=Sof(C9A)=Sof(H9A)=
 Sof(C10A)=Sof(H10A)=Sof(C11A)=Sof(H11A)=1-FVAR(1)
 Sof(F1)=Sof(F2)=Sof(N1)=Sof(C1)=Sof(C2)=Sof(H2)=Sof(C3)=Sof(C4)=Sof(H4)=
 Sof(C5)=Sof(C6)=Sof(C7)=Sof(C8)=Sof(H8)=Sof(C9)=Sof(H9)=Sof(C10)=Sof(H10)=
 Sof(C11)=Sof(H11)=FVAR(1)
6.a Aromatic/amide H refined with riding coordinates:
 C14(H14), C15(H15), C16(H16), C17(H17), C20(H20), C21(H21), C22(H22),
 C23(H23), C2(H2), C4(H4), C8(H8), C9(H9), C10(H10), C11(H11), C2A(H2A),
 C4A(H4A), C8A(H8A), C9A(H9A), C10A(H10A), C11A(H11A)
6.b Idealised Me refined as rotating group:
 C24(H24A,H24B,H24C)
;
_olex2_exptl_crystal_mounting_method
'Mounted on MiTeGen Dual-Thickness MicroMounts in paraffin oil.'
_olex2_submission_special_instructions 'No special instructions were received'