Comparison of isomericmeta- andpara-diiodotetrafluorobenzene as halogen bond donors in crystal engineering
Bedeković, Nikola; Stilinović, Vladimir; Friščić, Tomislav; Cinčić, Dominik; New Journal of Chemistry 42 (2018) 10584–; doi:10.1039/C8NJ01368C

data_7057357
_publ_section_title
;
 Comparison of isomericmeta- andpara-diiodotetrafluorobenzene as halogen
 bond donors in crystal engineering
;
_journal_issue                   13
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              10584
_journal_paper_doi               10.1039/C8NJ01368C
_journal_volume                  42
_journal_year                    2018
_chemical_formula_moiety         'C6 F4 I2, C6 H12 N2'
_chemical_formula_sum            'C12 H12 F4 I2 N2'
_chemical_formula_weight         514.04
_space_group_crystal_system      orthorhombic
_space_group_IT_number           29
_space_group_name_Hall           'P -2ac 2a'
_space_group_name_H-M_alt        'P 21 c a'
_symmetry_space_group_name_Hall  'P -2ac 2a'
_symmetry_space_group_name_H-M   'P 21 c a'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2018-04-25 deposited with the CCDC.
2018-04-27 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   26.5686(17)
_cell_length_b                   9.8339(6)
_cell_length_c                   11.9828(9)
_cell_measurement_reflns_used    3142
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      27.8290
_cell_measurement_theta_min      4.5920
_cell_volume                     3130.8(4)
_computing_cell_refinement
;
        CrysAlis RED, Oxford Diffraction Ltd.,
        Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
        (compiled Jun 10 2008,16:49:55)
;
_computing_data_collection
;
        CrysAlis CCD, Oxford Diffraction Ltd.,
        Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
        (compiled Jun 10 2008,16:49:55)
;
_computing_data_reduction
;
        CrysAlis RED, Oxford Diffraction Ltd.,
        Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
        (compiled Jun 10 2008,16:49:55)
;
_computing_molecular_graphics    'MERCURY (C.F. Macrae et al , 2008)'
_computing_publication_material  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_detector_area_resol_mean 16.3426
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type
;
Oxford Diffraction Xcalibur CCD
diffractometer
;
_diffrn_measurement_method       'omega scan'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0768
_diffrn_reflns_av_unetI/netI     0.0797
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -31
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            15526
_diffrn_reflns_point_group_measured_fraction_full 0.975
_diffrn_reflns_point_group_measured_fraction_max 0.975
_diffrn_reflns_theta_full        24.999
_diffrn_reflns_theta_max         24.999
_diffrn_reflns_theta_min         4.268
_diffrn_source                   'Enhance (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    4.050
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.30616
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlis RED, Oxford Diffraction Ltd.,
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET)
(compiled Jun 10 2008,16:49:55)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    2.181
_exptl_crystal_description       block
_exptl_crystal_F_000             1920
_exptl_crystal_size_max          0.39
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.31
_refine_diff_density_max         2.448
_refine_diff_density_min         -2.117
_refine_diff_density_rms         0.575
_refine_ls_abs_structure_details
;
 Flack x determined using 1361 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.11(6)
_refine_ls_extinction_coef       0.0071(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2014/7 (Sheldrick 2014'
_refine_ls_goodness_of_fit_ref   1.106
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     362
_refine_ls_number_reflns         5388
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.106
_refine_ls_R_factor_all          0.0995
_refine_ls_R_factor_gt           0.0797
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1331P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2049
_refine_ls_wR_factor_ref         0.2319
_reflns_Friedel_coverage         0.914
_reflns_Friedel_fraction_full    0.955
_reflns_Friedel_fraction_max     0.955
_reflns_number_gt                4355
_reflns_number_total             5388
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c8nj01368c2.cif
_cod_data_source_block           XI13
_cod_depositor_comments
'Adding full bibliography for 7057346--7057365.cif.'
_cod_database_code               7057357
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              10646