Mechanochromism and Polymorphism-Dependent Emission of Tetrakis(4-(dimethylamino)phenyl)ethylene
Qi, Qingkai; Zhang, Jibo; Xu, Bin; Li, Bao; Zhang, Sean Xiao-An; Tian, Wenjing; The Journal of Physical Chemistry C 117 (2013) 24997–; doi:10.1021/jp407965a

data_1513085
_publ_section_title
;
 Mechanochromism and Polymorphism-Dependent Emission of
 Tetrakis(4-(dimethylamino)phenyl)ethylene
;
_journal_issue                   47
_journal_name_full               'The Journal of Physical Chemistry C'
_journal_page_first              24997
_journal_paper_doi               10.1021/jp407965a
_journal_volume                  117
_journal_year                    2013
_chemical_formula_moiety         'C34 H40 N4'
_chemical_formula_sum            'C34 H40 N4'
_chemical_formula_weight         504.70
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 96.26(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   21.767(14)
_cell_length_b                   5.973(3)
_cell_length_c                   23.372(15)
_cell_measurement_reflns_used    7753
_cell_measurement_temperature    291(2)
_cell_measurement_theta_max      27.52
_cell_measurement_theta_min      3.51
_cell_volume                     3021(3)
_computing_cell_refinement       RAPID-AUTO
_computing_data_collection       'RAPID-AUTO (Rigaku Corporation, 1998)'
_computing_data_reduction
'CrystalStructure (Rigaku/MSC and Rigaku Corporation, 2002)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      291(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       '\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  0.0325
_diffrn_reflns_av_sigmaI/netI    0.0335
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            12604
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.51
_exptl_absorpt_coefficient_mu    0.065
_exptl_absorpt_correction_T_max  0.9791
_exptl_absorpt_correction_T_min  0.9744
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.110
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1088
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.37
_exptl_crystal_size_min          0.32
_refine_diff_density_max         0.107
_refine_diff_density_min         -0.141
_refine_diff_density_rms         0.033
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.986
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     176
_refine_ls_number_reflns         3443
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.986
_refine_ls_R_factor_all          0.0920
_refine_ls_R_factor_gt           0.0528
_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^)+(0.0945P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1465
_refine_ls_wR_factor_ref         0.1692
_reflns_number_gt                1869
_reflns_number_total             3443
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jp407965a_si_001.cif
_cod_data_source_block           qqk13-1
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               1513085