Flipping the Switch: Fast Photoisomerization in a Confined Environment.
Williams, Derek E.; Martin, Corey R.; Dolgopolova, Ekaterina A.; Swifton, Anton; Godfrey, Danielle C.; Ejegbavwo, Otega A.; Pellechia, Perry J.; Smith, Mark D.; Shustova, Natalia B.; Journal of the American Chemical Society 140 (2018) 7611–7622; doi:10.1021/jacs.8b02994

data_4132344
_publ_section_title
;
 Flipping the Switch: Fast Photoisomerization in a Confined Environment.
;
_journal_issue                   24
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              7611
_journal_page_last               7622
_journal_paper_doi               10.1021/jacs.8b02994
_journal_volume                  140
_journal_year                    2018
_chemical_formula_moiety         'C38 H32 Br2 N4 O6'
_chemical_formula_sum            'C38 H32 Br2 N4 O6'
_chemical_formula_weight         800.49
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2016-07-06
_audit_creation_method
;
Olex2 1.2
(compiled 2016.02.19 svn.r3266 for OlexSys, GUI svn.r5155)
;
_cell_angle_alpha                90
_cell_angle_beta                 105.835(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.9265(8)
_cell_length_b                   27.1065(17)
_cell_length_c                   11.5966(6)
_cell_measurement_reflns_used    9985
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.68
_cell_measurement_theta_min      2.36
_cell_volume                     3909.2(4)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_collection       'Bruker APEXII v2014.9-0 (Bruker, 2014)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'Bruker PHOTON-100 area detector'
_diffrn_detector_area_resol_mean 10.4
_diffrn_detector_type            'CMOS area detector'
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8 Quest'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0561
_diffrn_reflns_av_unetI/netI     0.0212
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       35
_diffrn_reflns_limit_k_min       -35
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            190319
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        27.819
_diffrn_reflns_theta_max         27.819
_diffrn_reflns_theta_min         2.223
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    2.121
_exptl_absorpt_correction_T_max  0.2619
_exptl_absorpt_correction_T_min  0.1863
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/4 (Bruker,2014/4) was used for absorption correction.
wR2(int) was 0.0987 before and 0.0619 after correction.
The Ratio of minimum to maximum transmission is 0.7113.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.360
_exptl_crystal_description       block
_exptl_crystal_F_000             1624
_exptl_crystal_size_max          0.46
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.34
_refine_diff_density_max         1.181
_refine_diff_density_min         -1.404
_refine_diff_density_rms         0.073
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     457
_refine_ls_number_reflns         9241
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0538
_refine_ls_R_factor_gt           0.0432
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0477P)^2^+6.5608P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1072
_refine_ls_wR_factor_ref         0.1123
_reflns_Friedel_coverage         0.000
_reflns_number_gt                7781
_reflns_number_total             9241
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b02994_si_004.cif
_cod_data_source_block           dew3_10_spiro6_sq
_cod_database_code               4132344
_shelx_estimated_absorpt_t_max   0.532
_shelx_estimated_absorpt_t_min   0.442
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C12(H12), C13(H13), C16(H16), C17(H17), C19(H19), C21(H21),
 C22(H22), C31(H31), C32(H32), C35(H35), C36(H36), C38(H38)
2.b Idealised Me refined as rotating group:
 C7(H7A,H7B,H7C), C9(H9A,H9B,H9C), C10(H10A,H10B,H10C), C26(H26A,H26B,H26C),
 C28(H28A,H28B,H28C), C29(H29A,H29B,H29C)
;
_shelx_res_checksum              55518
_shelx_hkl_checksum              28141
_shelx_fab_checksum              99109
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'