Donor- and acceptor-functionalized dibenzo[a,e]pentalenes: modulation of the electronic band gap
Wilbuer, J.; Grenz, D. C.; Schnakenburg, G.; Esser, B.; Organic Chemistry Frontiers 4 (2017) 658–; doi:10.1039/C6QO00487C

data_1553551
_publ_section_title
;
 Donor- and acceptor-functionalized dibenzo[a,e]pentalenes: modulation of
 the electronic band gap
;
_journal_issue                   5
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              658
_journal_paper_doi               10.1039/C6QO00487C
_journal_volume                  4
_journal_year                    2017
_chemical_formula_moiety         'C34 H28 Br2'
_chemical_formula_sum            'C34 H28 Br2'
_chemical_formula_weight         596.38
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2016-07-26
_audit_creation_method
;
Olex2 1.2
(compiled 2016.02.19 svn.r3266 for OlexSys, GUI svn.r5155)
;
_audit_update_record
;
2016-07-26 deposited with the CCDC.
2016-09-27 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 101.301(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   11.1310(4)
_cell_length_b                   10.2490(3)
_cell_length_c                   11.7630(4)
_cell_measurement_reflns_used    7193
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      78.59
_cell_measurement_theta_min      5.00
_cell_volume                     1315.92(8)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'XT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100.0
_diffrn_detector                 'Bruker Photon100 detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CMOS area detector'
_diffrn_measured_fraction_theta_full 0.967
_diffrn_measured_fraction_theta_max 0.967
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.1700
_diffrn_reflns_av_unetI/netI     0.0991
_diffrn_reflns_Laue_measured_fraction_full 0.967
_diffrn_reflns_Laue_measured_fraction_max 0.967
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            11321
_diffrn_reflns_point_group_measured_fraction_full 0.967
_diffrn_reflns_point_group_measured_fraction_max 0.967
_diffrn_reflns_theta_full        67.439
_diffrn_reflns_theta_max         67.439
_diffrn_reflns_theta_min         5.003
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    4.054
_exptl_absorpt_correction_T_max  0.4551
_exptl_absorpt_correction_T_min  0.1532
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/5 (Bruker,2014/5) was used for absorption correction.
wR2(int) was 0.1824 before and 0.1161 after correction.
The Ratio of minimum to maximum transmission is 0.3366.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.505
_exptl_crystal_description       plate
_exptl_crystal_F_000             604
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.863
_refine_diff_density_min         -0.898
_refine_diff_density_rms         0.149
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     166
_refine_ls_number_reflns         2298
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.1028
_refine_ls_R_factor_gt           0.0691
_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^)+(0.0381P)^2^+11.5874P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1474
_refine_ls_wR_factor_ref         0.1648
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1742
_reflns_number_total             2298
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6qo00487c2.cif
_cod_data_source_block           cu_4375n
_cod_database_code               1553551
_shelx_estimated_absorpt_t_max   0.923
_shelx_estimated_absorpt_t_min   0.642
_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.a Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C8(H8), C11(H11), C13(H13)
2.b Idealised Me refined as rotating group:
 C15(H15A,H15B,H15C), C16(H16A,H16B,H16C), C17(H17A,H17B,H17C)
;
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'