Spiroconjugated Donor-σ-Acceptor Charge-Transfer Dyes: Effect of the π-Subsystems on the Optoelectronic Properties.
Wössner, Jan S; Esser, Birgit; The Journal of organic chemistry 85 (2020) 5048–5057; doi:10.1021/acs.joc.0c00567

data_4038124
_publ_section_title
;
 Spiroconjugated Donor-\s-Acceptor Charge-Transfer Dyes: Effect of the
 \p-Subsystems on the Optoelectronic Properties.
;
_journal_issue                   7
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              5048
_journal_page_last               5057
_journal_paper_doi               10.1021/acs.joc.0c00567
_journal_volume                  85
_journal_year                    2020
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C H2 Cl2, C33 H18 O4'
_chemical_formula_sum            'C34 H20 Cl2 O4'
_chemical_formula_weight         563.40
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2018-12-20
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.3479(8)
_cell_length_b                   17.257(3)
_cell_length_c                   28.107(4)
_cell_measurement_reflns_used    9869
_cell_measurement_temperature    100
_cell_measurement_theta_max      32.406
_cell_measurement_theta_min      2.372
_cell_volume                     2594.0(7)
_computing_cell_refinement       'SAINT V8.38A (Madison, 2016)'
_computing_data_collection       'Bruker APEX2 software'
_computing_data_reduction        'SAINT V8.38A (Madison, 2016)'
_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    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100.01
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.931
_diffrn_measurement_device       'fixed-chi two circle goniometer'
_diffrn_measurement_device_type  'Bruker SMART APEX2 area detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0333
_diffrn_reflns_av_unetI/netI     0.0470
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.931
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       25
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -42
_diffrn_reflns_number            34844
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.885
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         33.185
_diffrn_reflns_theta_min         1.385
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_current           50
_diffrn_source_type              'Incoatec Mo I\ms'
_diffrn_source_voltage           0.6
_exptl_absorpt_coefficient_mu    0.291
_exptl_absorpt_correction_T_max  0.7466
_exptl_absorpt_correction_T_min  0.6959
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1407 before and 0.0485 after correction. The Ratio of minimum to maximum transmission is 0.9321. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.443
_exptl_crystal_description       block
_exptl_crystal_F_000             1160
_exptl_crystal_recrystallization_method
'The material was recrystallised from CHCl2 by slow evaporation'
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.412
_refine_diff_density_min         -0.715
_refine_diff_density_rms         0.075
_refine_ls_abs_structure_details
;
 Flack x determined using 2633 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.025(17)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     361
_refine_ls_number_reflns         8789
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0612
_refine_ls_R_factor_gt           0.0496
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0649P)^2^+1.4038P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1251
_refine_ls_wR_factor_ref         0.1312
_reflns_Friedel_coverage         0.679
_reflns_Friedel_fraction_full    0.999
_reflns_Friedel_fraction_max     0.825
_reflns_number_gt                7572
_reflns_number_total             8789
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo0c00567_si_002.cif
_cod_data_source_block           esser_jw283_0m_a
_cod_depositor_comments
'Adding full bibliography for 4038114--4038124.cif.'
_cod_original_cell_volume        2593.9(6)
_cod_database_code               4038124
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.977
_shelx_estimated_absorpt_t_min   0.931
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C34(H34A,H34B)
2.b Aromatic/amide H refined with riding coordinates:
 C3(H3), C4(H4), C5(H5), C6(H6), C8(H8), C9(H9), C13(H13), C14(H14), C16(H16),
 C17(H17), C18(H18), C19(H19), C24(H24), C25(H25), C26(H26), C28(H28), C29(H29),
  C30(H30)
;
_shelx_res_checksum              8494
_shelx_hkl_checksum              52849
_olex2_diffrn_ambient_temperature_device 'Oxford Cryosystems 800'
_olex2_exptl_crystal_mounting_method
'The crystal was mounted on a MITIGEN holder in perfluoroether oil'
_olex2_submission_special_instructions 'No special instructions were received'