Indolylbenzothiadiazoles with varying substituents on the indole ring: a systematic study on the self-recovering mechanochromic luminescence
Ito, Suguru; Taguchi, Tomohiro; Yamada, Takeshi; Ubukata, Takashi; Yamaguchi, Yoshitaka; Asami, Masatoshi; RSC Adv. 7 (2017) 16953–; doi:10.1039/C7RA01006K

data_7227891
_publ_section_title
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 Indolylbenzothiadiazoles with varying substituents on the indole ring: a
 systematic study on the self-recovering mechanochromic luminescence
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_journal_issue                   28
_journal_name_full               'RSC Adv.'
_journal_page_first              16953
_journal_paper_doi               10.1039/C7RA01006K
_journal_volume                  7
_journal_year                    2017
_chemical_formula_moiety         'C20 H19 N3 O S'
_chemical_formula_sum            'C20 H19 N3 O S'
_chemical_formula_weight         349.45
_chemical_melting_point          409.6(8)
_chemical_name_systematic
' 2-(2,1,3-Benzothiadiazol-4-yl)-3-methyl-1H-indol-1-yl-2,2-dimethylpropan-1-one'
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_update_record
;
2016-12-19 deposited with the CCDC.
2017-03-10 downloaded from the CCDC.
;
_cell_angle_alpha                90.0000
_cell_angle_beta                 98.941(7)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            8
_cell_length_a                   12.119(5)
_cell_length_b                   13.780(5)
_cell_length_c                   21.310(8)
_cell_measurement_reflns_used    10055
_cell_measurement_temperature    223
_cell_measurement_theta_max      30.23
_cell_measurement_theta_min      2.08
_cell_volume                     3516(2)
_computing_cell_refinement       CrystalClear
_computing_data_collection       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_reduction        CrystalClear
_computing_molecular_graphics    'CrystalStructure 4.2.1'
_computing_publication_material  'CrystalStructure 4.2.1 (Rigaku, 2016)'
_computing_structure_refinement  'SHELXL Version 2014/7 (Sheldrick, 2008)'
_computing_structure_solution    'SIR2011 (Burla, et al., 2012)'
_diffrn_ambient_temperature      223
_diffrn_detector_area_resol_mean 7.314
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Rigaku Mercury70'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0360
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            27090
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.499
_diffrn_reflns_theta_min         3.129
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.197
_exptl_absorpt_correction_T_max  0.961
_exptl_absorpt_correction_T_min  0.873
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'NUMABS (Rigaku, 1999)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.320
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1472.00
_exptl_crystal_preparation       ', Luminescent'
_exptl_crystal_recrystallization_method
'Re-crystallisation from solvent: hexane/diethyl ether'
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.400
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.24
_refine_diff_density_min         -0.33
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.082
_refine_ls_hydrogen_treatment    mixed
_refine_ls_number_parameters     475
_refine_ls_number_reflns         8018
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0643
_refine_ls_R_factor_gt           0.0506
_refine_ls_shift/su_max          0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0523P)^2^+0.9487P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1178
_refine_ls_wR_factor_ref         0.1268
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6550
_reflns_number_total             8018
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            c7ra01006k2.cif
_cod_data_source_block           TMCA069
_cod_depositor_comments
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The following automatic conversions were performed:

'_chemical_melting_point' value '408.75-410.35' was changed to
'409.6(8)' - the average value was taken and precision was estimated.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 
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_cod_database_code               7227891
_shelx_res_checksum              40552