Synthesis of Core-Modified Third-Generation Light-Driven Molecular Motors.
Berrocal, Jose Augusto; Pfeifer, Lukas; Heijnen, Dorus; Feringa, Ben L.; The Journal of organic chemistry  (2020) –; doi:10.1021/acs.joc.0c01235

data_4038632
_publ_section_title
;
 Synthesis of Core-Modified Third-Generation Light-Driven Molecular
 Motors.
;
_journal_name_full               'The Journal of organic chemistry'
_journal_paper_doi               10.1021/acs.joc.0c01235
_journal_year                    2020
_chemical_formula_moiety         'C44 H32 O2'
_chemical_formula_sum            'C44 H32 O2'
_chemical_formula_weight         592.69
_space_group_crystal_system      monoclinic
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_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2018/1
_cell_angle_alpha                90
_cell_angle_beta                 108.1510(10)
_cell_angle_gamma                90
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_cell_length_b                   11.2302(3)
_cell_length_c                   20.1932(5)
_cell_measurement_reflns_used    9896
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      78.64
_cell_measurement_theta_min      3.29
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_computing_cell_refinement       'Bruker SAINT 8.37A'
_computing_data_collection       'Bruker APEX3 V2016.1-0'
_computing_data_reduction        'Bruker SAINT 8.37A'
_computing_structure_refinement  'SHELXL-2018/1 (Sheldrick, 2018)'
_computing_structure_solution    'SHELXT 2014/5 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0320
_diffrn_reflns_av_unetI/netI     0.0240
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.987
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            31122
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.987
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         79.075
_diffrn_reflns_theta_min         3.292
_exptl_absorpt_coefficient_mu    0.602
_exptl_absorpt_correction_T_max  0.7542
_exptl_absorpt_correction_T_min  0.6929
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS 2014/5'
_exptl_crystal_colour            clear_pale_red
_exptl_crystal_density_diffrn    1.293
_exptl_crystal_description       plate
_exptl_crystal_F_000             1248
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.353
_refine_diff_density_min         -0.239
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     438
_refine_ls_number_reflns         6492
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0479
_refine_ls_R_factor_gt           0.0407
_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^)+(0.0511P)^2^+1.4735P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1006
_refine_ls_wR_factor_ref         0.1059
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5658
_reflns_number_total             6492
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo0c01235_si_001.cif
_cod_data_source_block           LP18005_XPREP_a
_cod_original_cell_volume        3044.08(13)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4038632
_shelx_shelxl_version_number     2018/1
_shelx_estimated_absorpt_t_min   0.889
_shelx_estimated_absorpt_t_max   0.942
_shelx_res_checksum              67869
_shelx_hkl_checksum              71414