Fast T-Type Photochromic Crystals of Diarylbenzene
Hamatani, Shota; Kitagawa, Daichi; Kobatake, Seiya; The Journal of Physical Chemistry C  (2021) –; doi:10.1021/acs.jpcc.0c10988

data_1560486
_publ_section_title
;
 Fast T-Type Photochromic Crystals of Diarylbenzene
;
_journal_name_full               'The Journal of Physical Chemistry C'
_journal_paper_doi               10.1021/acs.jpcc.0c10988
_journal_year                    2021
_chemical_formula_moiety         'C26 H16 F4 N2 O2'
_chemical_formula_sum            'C26 H16 F4 N2 O2'
_chemical_formula_weight         464.41
_space_group_crystal_system      orthorhombic
_space_group_IT_number           29
_space_group_name_Hall           'P 2c -2ac'
_space_group_name_H-M_alt        'P c a 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   23.488(4)
_cell_length_b                   13.488(3)
_cell_length_c                   6.8185(12)
_cell_measurement_reflns_used    5770
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.30
_cell_volume                     2160.1(7)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SIR92 (Altomare, et al., 1994)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 7.314
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Rigaku Mercury70'
_diffrn_measurement_method       \w
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0249
_diffrn_reflns_av_unetI/netI     0.0235
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       5
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            18034
_diffrn_reflns_point_group_measured_fraction_full 0.891
_diffrn_reflns_point_group_measured_fraction_max 0.868
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.467
_diffrn_reflns_theta_min         2.300
_exptl_absorpt_coefficient_mu    0.115
_exptl_absorpt_correction_T_max  0.980
_exptl_absorpt_correction_T_min  0.866
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'REQAB (Rigaku, 1998)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.428
_exptl_crystal_description       block
_exptl_crystal_F_000             952
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.370
_exptl_crystal_size_min          0.180
_refine_diff_density_max         0.173
_refine_diff_density_min         -0.176
_refine_diff_density_rms         0.035
_refine_ls_abs_structure_details
;
 Flack x determined using 1438 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     309
_refine_ls_number_reflns         4303
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0322
_refine_ls_R_factor_gt           0.0303
_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^)+(0.0374P)^2^+0.2631P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0708
_refine_ls_wR_factor_ref         0.0722
_reflns_Friedel_coverage         0.600
_reflns_Friedel_fraction_full    0.761
_reflns_Friedel_fraction_max     0.713
_reflns_number_gt                4130
_reflns_number_total             4303
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jp0c10988_si_003.cif
_cod_data_source_block           3a
_cod_database_code               1560486
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.956
_shelx_estimated_absorpt_t_max   0.980
_shelx_res_checksum              99950
_shelx_hkl_checksum              36421