Mechanofluorochromic properties of fluorescent molecules based on a dicyanomethylene-4H-pyran and indole isomer containing different alkyl chains via an alkene module
Qian, Lebin; Zhou, Yibin; Liu, Miaochang; Huang, Xiaobo; Wu, Ge; Gao, Wenxia; Ding, Jinchang; Wu, Huayue; RSC Adv. 7 (2017) 42180–; doi:10.1039/C7RA06951K

data_7229023
_publ_section_title
;
 Mechanofluorochromic properties of fluorescent molecules based on a
 dicyanomethylene-4H-pyran and indole isomer containing different alkyl
 chains via an alkene module
;
_journal_issue                   67
_journal_name_full               'RSC Adv.'
_journal_page_first              42180
_journal_paper_doi               10.1039/C7RA06951K
_journal_volume                  7
_journal_year                    2017
_chemical_formula_moiety         'C28 H16 N4 O, 2.5(C4 H8 O2)'
_chemical_formula_sum            'C38 H38 N4 O6'
_chemical_formula_weight         646.72
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2017-06-06 deposited with the CCDC.
2017-08-25 downloaded from the CCDC.
;
_cell_angle_alpha                70.424(8)
_cell_angle_beta                 80.392(9)
_cell_angle_gamma                68.547(8)
_cell_formula_units_Z            2
_cell_length_a                   9.885(5)
_cell_length_b                   13.056(6)
_cell_length_c                   15.400(8)
_cell_measurement_reflns_used    3818
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      24.92
_cell_measurement_theta_min      2.32
_cell_volume                     1740.6(15)
_computing_cell_refinement       'SAINT (Bruker, 2002)'
_computing_data_collection       'SMART (Bruker, 2002)'
_computing_data_reduction        SAINT
_computing_molecular_graphics    'XP (Bruker, 2002)'
_computing_publication_material  'SHELXL-97 (Bruker, 2002)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'Bruker APEX II area-detector diffractometer'
_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  0.0654
_diffrn_reflns_av_sigmaI/netI    0.0924
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            14608
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         1.41
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  0.9792
_exptl_absorpt_correction_T_min  0.9735
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker, 2002)'
_exptl_crystal_colour            Red
_exptl_crystal_density_diffrn    1.234
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             684
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.29
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.341
_refine_diff_density_min         -0.295
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     433
_refine_ls_number_reflns         6358
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.1275
_refine_ls_R_factor_gt           0.0811
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1243P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2091
_refine_ls_wR_factor_ref         0.2355
_reflns_number_gt                3532
_reflns_number_total             6358
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            c7ra06951k2.cif
_cod_data_source_block           mo_20160302b_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 
;
_cod_original_cell_volume        1740.7(15)
_cod_database_code               7229023