N,N′-Disubstituted Indigos as Readily Available Red-Light Photoswitches with Tunable Thermal Half-Lives
Huang, Chung-Yang; Bonasera, Aurelio; Hristov, Lachezar; Garmshausen, Yves; Schmidt, Bernd M.; Jacquemin, Denis; Hecht, Stefan; Journal of the American Chemical Society  (2017) –; doi:10.1021/jacs.7b08726

data_4126580
_publ_section_title
;
 N,N&#x2032;-Disubstituted Indigos as Readily Available Red-Light
 Photoswitches with Tunable Thermal Half-Lives
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_paper_doi               10.1021/jacs.7b08726
_journal_year                    2017
_chemical_formula_moiety         'C28 H18 N2 O2'
_chemical_formula_sum            'C28 H18 N2 O2'
_chemical_formula_weight         414.44
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   16.144(3)
_cell_length_b                   15.029(3)
_cell_length_c                   17.020(3)
_cell_measurement_reflns_used    9930
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.37
_cell_measurement_theta_min      2.87
_cell_volume                     4129.5(13)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker D8 VENTURE'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0383
_diffrn_reflns_av_unetI/netI     0.0112
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            100812
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.377
_diffrn_reflns_theta_min         2.204
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.7454
_exptl_absorpt_correction_T_min  0.7073
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker-AXS)'
_exptl_crystal_colour            blue
_exptl_crystal_density_diffrn    1.333
_exptl_crystal_description       block
_exptl_crystal_F_000             1728
_exptl_crystal_size_max          0.481
_exptl_crystal_size_mid          0.398
_exptl_crystal_size_min          0.295
_refine_diff_density_max         0.292
_refine_diff_density_min         -0.239
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     289
_refine_ls_number_reflns         4220
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.0394
_refine_ls_R_factor_gt           0.0366
_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^)+(0.0474P)^2^+2.1953P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0928
_refine_ls_wR_factor_ref         0.0952
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3916
_reflns_number_total             4220
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja7b08726_si_002.cif
_cod_data_source_block           mo_h16_009_0m_a
_cod_original_cell_volume        4129.4(13)
_cod_database_code               4126580
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.960
_shelx_estimated_absorpt_t_max   0.975
_shelx_res_checksum              30268
_shelx_hkl_checksum              2564