Relationship between crystal structures and photochromic properties of N-salicylideneaminopyridine derivatives
Sugiyama, Haruki; Uekusa, Hidehiro; CrystEngComm 20 (2018) 2144–; doi:10.1039/C8CE00003D

data_7230335
_publ_section_title
;
 Relationship between crystal structures and photochromic properties of
 N-salicylideneaminopyridine derivatives
;
_journal_issue                   15
_journal_name_full               CrystEngComm
_journal_page_first              2144
_journal_paper_doi               10.1039/C8CE00003D
_journal_volume                  20
_journal_year                    2018
_chemical_compound_source        non-photochromic
_chemical_formula_moiety         'C12 H9 Br N2 O, 0.5(I2 C12 H8)'
_chemical_formula_sum            'C18 H13 Br I N2 O'
_chemical_formula_weight         480.11
_chemical_name_common            5Br3SAP-14IbiPh
_chemical_name_systematic
'4-bromo-2-[(E)-3-pyridyliminomethyl]phenol, 1,4-diiodobiphenyl'
_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'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2016/6
_audit_update_record
;
2017-12-30 deposited with the CCDC.
2018-03-20 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90.041(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   37.851(2)
_cell_length_b                   6.9901(4)
_cell_length_c                   6.168(3)
_cell_measurement_reflns_used    8123
_cell_measurement_temperature    93(2)
_cell_measurement_theta_max      27.47
_cell_measurement_theta_min      3.11
_cell_volume                     1631.9(8)
_computing_cell_refinement       'PROCESS-AUTO (Rigaku, 1998)'
_computing_data_collection       'PROCESS-AUTO (Rigaku, 1998)'
_computing_data_reduction        'PROCESS-AUTO (Rigaku, 1998)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 2008)'
_computing_publication_material  'SHELXL-2014/07 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT 2014/4 (Sheldrick, 2014)'
_diffrn_ambient_temperature      93(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'RIGAKU R-AXIS RAPID IP Area Detector'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0837
_diffrn_reflns_av_unetI/netI     0.0736
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       45
_diffrn_reflns_limit_h_min       -45
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            12155
_diffrn_reflns_point_group_measured_fraction_full 0.995
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.350
_diffrn_reflns_theta_min         3.107
_diffrn_source                   'rotating anode X-ray tube'
_exptl_absorpt_coefficient_mu    4.416
_exptl_absorpt_correction_T_max  0.917
_exptl_absorpt_correction_T_min  0.433
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Absorption was corrected by ABSCOR'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.954
_exptl_crystal_description       palte
_exptl_crystal_F_000             924
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: methanol'
_exptl_crystal_size_max          0.040
_exptl_crystal_size_mid          0.040
_exptl_crystal_size_min          0.020
_refine_diff_density_max         1.491
_refine_diff_density_min         -0.784
_refine_diff_density_rms         0.215
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.050
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     208
_refine_ls_number_reflns         2976
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.050
_refine_ls_R_factor_all          0.0417
_refine_ls_R_factor_gt           0.0377
_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^)+(0.0334P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0813
_refine_ls_wR_factor_ref         0.0838
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2637
_reflns_number_total             2976
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8ce00003d2.cif
_cod_data_source_block           shelx_CCDC20
_cod_depositor_comments
'Adding full bibliography for 7230315--7230335.cif.'
_cod_database_code               7230335
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.843
_shelx_estimated_absorpt_t_max   0.917
_shelx_res_checksum              35447