Snapshotting the Excited-State Planarization of Chemically Locked N,N'-Disubstituted Dihydrodibenzo[a,c]phenazines.
Chen, Wei; Chen, Chi-Lin; Zhang, Zhiyun; Chen, Yi-An; Chao, Wei-Chih; Su, Jianhua; Tian, He; Chou, Pi-Tai; Journal of the American Chemical Society 139 (2017) 1636–1644; doi:10.1021/jacs.6b11789

data_4125739
_publ_section_title
;
 Snapshotting the Excited-State Planarization of Chemically Locked
 N,N'-Disubstituted Dihydrodibenzo[a,c]phenazines.
;
_journal_issue                   4
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              1636
_journal_page_last               1644
_journal_paper_doi               10.1021/jacs.6b11789
_journal_volume                  139
_journal_year                    2017
_chemical_formula_sum            'C57 H58 Cl2 N2 O6'
_chemical_formula_weight         937.95
_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
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                97.5528(9)
_cell_angle_beta                 90.6450(10)
_cell_angle_gamma                102.0971(10)
_cell_formula_units_Z            2
_cell_length_a                   9.4122(3)
_cell_length_b                   10.5185(3)
_cell_length_c                   24.5962(7)
_cell_measurement_reflns_used    9966
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      70.06
_cell_measurement_theta_min      3.63
_cell_volume                     2358.46(12)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX3'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker D8 VENTURE'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0121
_diffrn_reflns_av_unetI/netI     0.0179
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            15062
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         69.994
_diffrn_reflns_theta_min         3.628
_exptl_absorpt_coefficient_mu    1.680
_exptl_absorpt_correction_T_max  0.7533
_exptl_absorpt_correction_T_min  0.6383
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2014)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.321
_exptl_crystal_description       plate
_exptl_crystal_F_000             992
_exptl_crystal_size_max          0.250
_exptl_crystal_size_mid          0.180
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.262
_refine_diff_density_min         -0.612
_refine_diff_density_rms         0.050
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.019
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     608
_refine_ls_number_reflns         8906
_refine_ls_number_restraints     8
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0506
_refine_ls_R_factor_gt           0.0459
_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^)+(0.0687P)^2^+1.3304P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1244
_refine_ls_wR_factor_ref         0.1286
_reflns_Friedel_coverage         0.000
_reflns_number_gt                7989
_reflns_number_total             8906
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja6b11789_si_005.cif
_cod_data_source_block           ic17687
_cod_database_code               4125739
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.679
_shelx_estimated_absorpt_t_max   0.850
_shelx_res_checksum              61479
_shelx_hkl_checksum              87236