General Photoinduced Sequential Electrocyclization/[1,9]-Sigmatropic Rearrangement/Ring-Opening Reaction of Diarylethenes.
Lvov, Andrey G.; Shirinian, Valerii Z.; Zakharov, Alexey V.; Krayushkin, Mikhail M.; Kachala, Vadim V.; Zavarzin, Igor V.; The Journal of organic chemistry 80 (2015) 11491–11500; doi:10.1021/acs.joc.5b02237

data_4036496
_publ_section_title
;
 General Photoinduced Sequential Electrocyclization/[1,9]-Sigmatropic
 Rearrangement/Ring-Opening Reaction of Diarylethenes.
;
_journal_issue                   22
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              11491
_journal_page_last               11500
_journal_paper_doi               10.1021/acs.joc.5b02237
_journal_volume                  80
_journal_year                    2015
_chemical_formula_moiety         'C20 H15 N O3'
_chemical_formula_sum            'C20 H15 N O3'
_chemical_formula_weight         317.33
_space_group_crystal_system      monoclinic
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_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   mixed
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_cell_angle_alpha                90
_cell_angle_beta                 109.5189(10)
_cell_angle_gamma                90
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_cell_length_a                   18.1196(10)
_cell_length_b                   10.6097(6)
_cell_length_c                   16.4832(9)
_cell_measurement_reflns_used    990
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      25
_cell_measurement_theta_min      3
_cell_volume                     2986.7(3)
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_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX II CCD area detector''
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0259
_diffrn_reflns_av_unetI/netI     0.0222
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            17646
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.999
_diffrn_reflns_theta_min         2.260
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.411
_exptl_crystal_description       prism
_exptl_crystal_F_000             1328
_exptl_crystal_size_max          0.320
_exptl_crystal_size_mid          0.210
_exptl_crystal_size_min          0.190
_exptl_transmission_factor_max   0.980
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_refine_diff_density_max         0.459
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_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     222
_refine_ls_number_reflns         3975
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0515
_refine_ls_R_factor_gt           0.0417
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0564P)^2^+2.6990P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1052
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_reflns_Friedel_coverage         0.000
_reflns_number_gt                3324
_reflns_number_total             3975
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo5b02237_si_004.cif
_cod_data_source_block           1
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4036496
_shelx_estimated_absorpt_t_min   0.970
_shelx_estimated_absorpt_t_max   0.982
_shelxl_version_number           2014/6
_shelx_res_checksum              52546
_shelx_hkl_checksum              1988