Molecular Orbital Delocalization/Localization-Induced Crystal-to-Crystal Photochromism of Schiff Bases without ortho-Hydroxyl Groups
Ding, Sheng; Lin, He; Yu, Yuming; Liu, Lang; Deng, Caiming; Zhao, Jianzhang; Jia, Dianzeng; The Journal of Physical Chemistry C 122 (2018) 24933–; doi:10.1021/acs.jpcc.8b07408

data_1554112
_publ_section_title
;
 Molecular Orbital Delocalization/Localization-Induced Crystal-to-Crystal
 Photochromism of Schiff Bases without ortho-Hydroxyl Groups
;
_journal_issue                   43
_journal_name_full               'The Journal of Physical Chemistry C'
_journal_page_first              24933
_journal_paper_doi               10.1021/acs.jpcc.8b07408
_journal_volume                  122
_journal_year                    2018
_chemical_formula_moiety         'C6 H7 N3 O S'
_chemical_formula_sum            'C6 H7 N3 O S'
_chemical_formula_weight         169.21
_chemical_name_common            '2-O form (II)'
_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   mixed
_atom_sites_solution_primary     direct
_audit_creation_date             2018-01-17
_audit_creation_method
;
Olex2 1.2
(compiled 2017.01.04 svn.r3372 for OlexSys, GUI svn.r5292)
;
_cell_angle_alpha                90
_cell_angle_beta                 100.72(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.708(3)
_cell_length_b                   5.4645(9)
_cell_length_c                   12.461(3)
_cell_measurement_reflns_used    660
_cell_measurement_temperature    293.15
_cell_measurement_theta_max      23.5630
_cell_measurement_theta_min      4.0690
_cell_volume                     783.3(3)
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      293.15
_diffrn_measured_fraction_theta_full 0.977
_diffrn_measured_fraction_theta_max 0.832
_diffrn_measurement_device_type  'multiwire proportional'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0906
_diffrn_reflns_av_unetI/netI     0.1607
_diffrn_reflns_Laue_measured_fraction_full 0.977
_diffrn_reflns_Laue_measured_fraction_max 0.832
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            3667
_diffrn_reflns_point_group_measured_fraction_full 0.977
_diffrn_reflns_point_group_measured_fraction_max 0.832
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.471
_diffrn_reflns_theta_min         3.467
_exptl_absorpt_coefficient_mu    0.356
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.06524
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.435
_exptl_crystal_description       block
_exptl_crystal_F_000             352
_exptl_crystal_size_max          0.941
_exptl_crystal_size_mid          0.649
_exptl_crystal_size_min          0.101
_refine_diff_density_max         0.647
_refine_diff_density_min         -0.748
_refine_diff_density_rms         0.112
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     105
_refine_ls_number_reflns         1813
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.2077
_refine_ls_R_factor_gt           0.1109
_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^)+(0.1399P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2498
_refine_ls_wR_factor_ref         0.3211
_reflns_Friedel_coverage         0.000
_reflns_number_gt                814
_reflns_number_total             1813
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jp8b07408_si_003.cif
_cod_data_source_block           2
_cod_original_cell_volume        783.4(3)
_cod_database_code               1554112
_shelx_shelxl_version_number     2014/7
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All N(H) groups, All N(H,H) groups
2.a Rotating group:
 N1(H1a,H1b)
2.b Aromatic/amide H refined with riding coordinates:
 N2(H2), C2(H2a), C4(H4), C6(H6)
;
_olex2_submission_special_instructions 'No special instructions were received'