Reversible mechanochromism and enhanced AIE in tetraphenylethene substituted phenanthroimidazoles
Rajneesh Misra; Thaksen Jadhav; Bhausaheb Dhokale; Shaikh M. Mobin; Chem.Commun. 50 (2014) 9076–; doi:10.1039/C4cc02824D

data_7115430
_publ_section_title
;
 Reversible mechanochromism and enhanced AIE in tetraphenylethene
 substituted phenanthroimidazoles
;
_journal_name_full               Chem.Commun.
_journal_page_first              9076
_journal_paper_doi               10.1039/C4cc02824D
_journal_volume                  50
_journal_year                    2014
_chemical_formula_sum            'C53 H36 N2'
_chemical_formula_weight         700.84
_chemical_name_systematic
;
 ?
;
_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
_cell_angle_alpha                75.876(7)
_cell_angle_beta                 86.942(7)
_cell_angle_gamma                74.587(8)
_cell_formula_units_Z            2
_cell_length_a                   9.4281(9)
_cell_length_b                   12.0240(11)
_cell_length_c                   21.1941(14)
_cell_measurement_reflns_used    2165
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      72.1515
_cell_measurement_theta_min      3.9278
_cell_volume                     2246.0(4)
_computing_cell_refinement       'CrysAlis RED, Oxford Diffraction Ltd.,'
_computing_data_collection       'CrysAlis CCD, Oxford Diffraction Ltd.,'
_computing_data_reduction        'CrysAlis RED, Oxford Diffraction Ltd.,'
_computing_molecular_graphics    Ortep3
_computing_publication_material  Shelx97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 15.9948
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'OXFORD DIFFRACTION SUPER NOVA'
_diffrn_measurement_method       \w/q-scan
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Micro-Focus (Cu) X-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.5418
_diffrn_reflns_av_R_equivalents  0.0359
_diffrn_reflns_av_sigmaI/netI    0.0628
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            15850
_diffrn_reflns_theta_full        69.99
_diffrn_reflns_theta_max         69.99
_diffrn_reflns_theta_min         3.93
_exptl_absorpt_coefficient_mu    0.457
_exptl_absorpt_correction_T_max  0.9430
_exptl_absorpt_correction_T_min  0.9021
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.31.7 (release 18-10-2006 CrysAlis171 .NET)
(compiled Oct 18 2006,16:28:17)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.036
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             736
_exptl_crystal_size_max          0.23
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.13
_platon_squeeze_details
;
;
_refine_diff_density_max         0.248
_refine_diff_density_min         -0.240
_refine_diff_density_rms         0.063
_refine_ls_extinction_coef       0.0026(7)
_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   0.942
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     497
_refine_ls_number_reflns         8450
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.942
_refine_ls_R_factor_all          0.1769
_refine_ls_R_factor_gt           0.1049
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.3342
_refine_ls_wR_factor_ref         0.3809
_reflns_number_gt                2818
_reflns_number_total             8450
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4cc02824d2.cif
_cod_data_source_block           rm104
_cod_original_cell_volume        2246.0(3)
_cod_database_code               7115430