Switching the light emission of (4-biphenylyl)phenyldibenzofulvene by morphological modulation: crystallization-induced emission enhancement.
Dong, Yongqiang; Lam, Jacky W Y; Qin, Anjun; Li, Zhen; Sun, Jingzhi; Sung, Herman H-Y; Williams, Ian D; Tang, Ben Zhong; Chemical communications (Cambridge, England)  (2007) 40–42; doi:10.1039/b613157c

data_7101610
_publ_section_title
;
 Switching the light emission of (4-biphenylyl)phenyldibenzofulvene by
 morphological modulation: crystallization-induced emission
 enhancement.
;
_journal_issue                   1
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              40
_journal_page_last               42
_journal_paper_doi               10.1039/b613157c
_journal_year                    2007
_chemical_formula_sum            'C34 H26 Cl2'
_chemical_formula_weight         505.45
_chemical_name_systematic
;
?
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 108.0360(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.8275(7)
_cell_length_b                   9.9939(5)
_cell_length_c                   19.6086(9)
_cell_measurement_reflns_used    8454
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      29.58
_cell_measurement_theta_min      2.18
_cell_volume                     2576.6(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.946
_diffrn_measured_fraction_theta_max 0.934
_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  0.0234
_diffrn_reflns_av_sigmaI/netI    0.0272
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            15935
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.31
_exptl_absorpt_coefficient_mu    0.274
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.93
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.303
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       bar
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.586
_refine_diff_density_min         -0.411
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     323
_refine_ls_number_reflns         4723
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0572
_refine_ls_R_factor_gt           0.0481
_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^)+(0.0510P)^2^+2.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1093
_refine_ls_wR_factor_ref         0.1136
_reflns_number_gt                4006
_reflns_number_total             4723
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b613157c.txt
_cod_data_source_block           1
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7101610