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

data_7230326
_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        photochromic
_chemical_formula_moiety         'C12 H8 Cl2 N2 O'
_chemical_formula_sum            'C12 H8 Cl2 N2 O'
_chemical_formula_weight         267.10
_chemical_name_common            35Cl-3SAP
_chemical_name_systematic        2,4-dichloro6-[(E)-3-pyridyliminomethyl]phenol
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2017-12-30 deposited with the CCDC.
2018-03-20 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 137.4640(10)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   26.1636(6)
_cell_length_b                   3.80910(10)
_cell_length_c                   34.4455(6)
_cell_measurement_reflns_used    11218
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      68.135
_cell_measurement_theta_min      3.380
_cell_volume                     2320.78(10)
_computing_cell_refinement       RAPID-AUTO
_computing_data_collection       RAPID-AUTO
_computing_data_reduction        RAPID-AUTO
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97(Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 10.0
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'RIGAKU R-AXIS RAPID2'
_diffrn_measurement_method       \w-scan
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54186
_diffrn_reflns_av_R_equivalents  0.0959
_diffrn_reflns_av_unetI/netI     0.0656
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -29
_diffrn_reflns_limit_k_max       4
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       41
_diffrn_reflns_limit_l_min       -41
_diffrn_reflns_number            11218
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        67.686
_diffrn_reflns_theta_max         68.135
_diffrn_reflns_theta_min         3.380
_diffrn_source                   'rotating anode x-ray'
_exptl_absorpt_coefficient_mu    4.900
_exptl_absorpt_correction_T_max  0.783
_exptl_absorpt_correction_T_min  0.513
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   abscore,T.Higashi,RIGAKU
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.529
_exptl_crystal_description       platelet
_exptl_crystal_F_000             1088
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: diethyl ether'
_exptl_crystal_size_max          0.190
_exptl_crystal_size_mid          0.150
_exptl_crystal_size_min          0.050
_refine_diff_density_max         0.401
_refine_diff_density_min         -0.275
_refine_diff_density_rms         0.077
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.099
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     154
_refine_ls_number_reflns         2131
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.099
_refine_ls_R_factor_all          0.0603
_refine_ls_R_factor_gt           0.0455
_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^)+(0.0763P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1208
_refine_ls_wR_factor_ref         0.1315
_reflns_Friedel_coverage         0.000
_reflns_number_gt                1777
_reflns_number_total             2131
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8ce00003d2.cif
_cod_data_source_block           shelx_CCDC11
_cod_depositor_comments
'Adding full bibliography for 7230315--7230335.cif.'
_cod_original_cell_volume        2320.77(10)
_cod_database_code               7230326
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.456
_shelx_estimated_absorpt_t_max   0.792
_shelx_res_checksum              39767