Touch-sensitive mechanoluminescence crystals comprising a simple purely organic molecule emit bright blue fluorescence regardless of crystallization methods.
Zhang, Kai; Sun, Qikun; Zhang, Zhenzhen; Tang, Linagliang; Xie, Zongliang; Chi, Zhenguo; Xue, Shanfeng; Zhang, Haichang; Yang, Wenjun; Chemical communications (Cambridge, England) 54 (2018) 5225–5228; doi:10.1039/c8cc02513d

data_7121607
_publ_section_title
;
 Touch-sensitive mechanoluminescence crystals comprising a simple purely
 organic molecule emit bright blue fluorescence regardless of
 crystallization methods.
;
_journal_issue                   41
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              5225
_journal_page_last               5228
_journal_paper_doi               10.1039/c8cc02513d
_journal_volume                  54
_journal_year                    2018
_chemical_formula_sum            'C18 H13 N'
_chemical_formula_weight         243.29
_space_group_IT_number           43
_space_group_name_Hall           'F 2 -2d'
_space_group_name_H-M_alt        'F d d 2'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'F 2 -2d'
_symmetry_space_group_name_H-M   'F d d 2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-11-07 deposited with the CCDC.
2018-05-04 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            16
_cell_length_a                   12.7887(15)
_cell_length_b                   38.1950(19)
_cell_length_c                   10.8230(15)
_cell_measurement_reflns_used    599
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      16.64
_cell_measurement_theta_min      2.52
_cell_volume                     5286.7(10)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0936
_diffrn_reflns_av_sigmaI/netI    0.0807
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       45
_diffrn_reflns_limit_k_min       -43
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            6523
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         2.52
_exptl_absorpt_coefficient_mu    0.071
_exptl_absorpt_correction_T_max  0.9852
_exptl_absorpt_correction_T_min  0.9769
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.223
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2048
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.21
_refine_diff_density_max         0.087
_refine_diff_density_min         -0.084
_refine_diff_density_rms         0.023
_refine_ls_extinction_coef       0.00095(9)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.982
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     173
_refine_ls_number_reflns         1834
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.982
_refine_ls_R_factor_all          0.1072
_refine_ls_R_factor_gt           0.0427
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0006P)^2^+0.1000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0544
_refine_ls_wR_factor_ref         0.0633
_reflns_number_gt                992
_reflns_number_total             1834
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c8cc02513d5.cif
_cod_data_source_block           a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

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

 Adding full bibliography for 7121607.cif.
;
_cod_original_cell_volume        5286.6(10)
_cod_original_sg_symbol_H-M      'Fdd2 '
_cod_database_code               7121607