Phosphorescent cocrystals constructed by 1,4-diiodotetrafluorobenzene and polyaromatic hydrocarbons based on C‒I⋯π halogen bonding and other assisting weak interactions
Shen, Qian Jin; Pang, Xue; Zhao, Xiao Ran; Gao, Hai Yue; Sun, Hao-Ling; Jin, Wei Jun; CrystEngComm 14 (2012) 5027–; doi:10.1039/c2ce25338k

data_7208276
_publ_section_title
;
 Phosphorescent cocrystals constructed by 1,4-diiodotetrafluorobenzene and
 polyaromatic hydrocarbons based on C--I&#x22EF;\p halogen bonding and
 other assisting weak interactions
;
_journal_issue                   15
_journal_name_full               CrystEngComm
_journal_page_first              5027
_journal_paper_doi               10.1039/c2ce25338k
_journal_volume                  14
_journal_year                    2012
_chemical_formula_sum            'C26 H10 F8 I4'
_chemical_formula_weight         981.94
_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                104.290(4)
_cell_angle_beta                 90.952(4)
_cell_angle_gamma                97.561(4)
_cell_formula_units_Z            1
_cell_length_a                   6.1901(16)
_cell_length_b                   9.381(3)
_cell_length_c                   12.462(3)
_cell_measurement_reflns_used    1551
_cell_measurement_temperature    300(2)
_cell_measurement_theta_max      27.25
_cell_measurement_theta_min      2.26
_cell_volume                     694.3(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_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      300(2)
_diffrn_measured_fraction_theta_full 0.975
_diffrn_measured_fraction_theta_max 0.975
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0141
_diffrn_reflns_av_sigmaI/netI    0.0260
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            3180
_diffrn_reflns_theta_full        25.10
_diffrn_reflns_theta_max         25.10
_diffrn_reflns_theta_min         2.26
_exptl_absorpt_coefficient_mu    4.557
_exptl_absorpt_correction_T_max  0.3418
_exptl_absorpt_correction_T_min  0.2505
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_density_diffrn    2.349
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             450
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.30
_refine_diff_density_max         1.060
_refine_diff_density_min         -1.005
_refine_diff_density_rms         0.092
_refine_ls_extinction_coef       0.0365(15)
_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   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     212
_refine_ls_number_reflns         2420
_refine_ls_number_restraints     120
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0456
_refine_ls_R_factor_gt           0.0364
_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^)+(0.0346P)^2^+1.5952P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0872
_refine_ls_wR_factor_ref         0.0934
_reflns_number_gt                1936
_reflns_number_total             2420
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c2ce25338k.txt
_cod_data_source_block           110407b_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        694.2(3)
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7208276