Effects of iptycene scaffolds on the photoluminescence of N,N-dimethylaminobenzonitrile and its analogues.
Tan, Wei Shyang; Prabhakar, Ch; Liu, Yi-Hung; Peng, Shie-Ming; Yang, Jye-Shane; Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology 13 (2014) 211–223; doi:10.1039/c3pp50196e

data_1513755
_publ_section_title
;
 Effects of iptycene scaffolds on the photoluminescence of
 N,N-dimethylaminobenzonitrile and its analogues.
;
_journal_issue                   2
_journal_name_full
'Photochemical &amp; photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology'
_journal_page_first              211
_journal_page_last               223
_journal_paper_doi               10.1039/c3pp50196e
_journal_volume                  13
_journal_year                    2014
_chemical_formula_sum            'C22 H16 N2'
_chemical_formula_weight         308.37
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 103.974(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.0125(3)
_cell_length_b                   11.4927(4)
_cell_length_c                   16.4078(6)
_cell_measurement_temperature    295(2)
_cell_volume                     1649.19(10)
_computing_cell_refinement       'Bruker FRAMBO'
_computing_data_collection       'Bruker FRAMBO'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'multiwire proportional'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0172
_diffrn_reflns_av_sigmaI/netI    0.0204
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            5908
_diffrn_reflns_theta_full        67.98
_diffrn_reflns_theta_max         67.98
_diffrn_reflns_theta_min         4.75
_exptl_absorpt_coefficient_mu    0.566
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.242
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             648
_refine_diff_density_max         0.558
_refine_diff_density_min         -0.491
_refine_diff_density_rms         0.052
_refine_ls_extinction_coef       0.0068(10)
_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   0.990
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     218
_refine_ls_number_reflns         3005
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.990
_refine_ls_R_factor_all          0.0637
_refine_ls_R_factor_gt           0.0593
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1280P)^2^+0.8801P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1890
_refine_ls_wR_factor_ref         0.1960
_reflns_number_gt                2712
_reflns_number_total             3005
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3pp50196e.txt
_cod_data_source_block           ic15008
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/automatic-downloads/current/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 2281 2013-09-26 08:29:07Z andrius 
;
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               1513755