The C-I···X¯ halogen bonding of tetraiodoethylene with halide anions in solution and cocrystals investigated by experiment and calculation.
Wang, Hui; Zhao, Xiao Ran; Jin, Wei Jun; Physical chemistry chemical physics : PCCP 15 (2013) 4320–4328; doi:10.1039/c3cp43865a

data_7211272
_publ_section_title
;
 The C-I&#x00B7;&#x00B7;&#x00B7;X&#x00AF; halogen bonding of
 tetraiodoethylene with halide anions in solution and cocrystals
 investigated by experiment and calculation.
;
_journal_issue                   12
_journal_name_full               'Physical chemistry chemical physics : PCCP'
_journal_page_first              4320
_journal_page_last               4328
_journal_paper_doi               10.1039/c3cp43865a
_journal_volume                  15
_journal_year                    2013
_chemical_formula_sum            'C22 H36 Cl I12 N'
_chemical_formula_weight         1872.77
_chemical_name_systematic
;
?
;
_space_group_IT_number           139
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  '-I 4 2'
_symmetry_space_group_name_H-M   'I 4/m m m'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.9134(8)
_cell_length_b                   15.9134(8)
_cell_length_c                   17.0463(18)
_cell_measurement_reflns_used    2960
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      25.98
_cell_measurement_theta_min      2.39
_cell_volume                     4316.7(5)
_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      110(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0425
_diffrn_reflns_av_sigmaI/netI    0.0230
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            10965
_diffrn_reflns_theta_full        25.25
_diffrn_reflns_theta_max         25.25
_diffrn_reflns_theta_min         1.75
_exptl_absorpt_coefficient_mu    8.686
_exptl_absorpt_correction_T_max  0.3039
_exptl_absorpt_correction_T_min  0.2297
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_density_diffrn    2.882
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             3312
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.18
_refine_diff_density_max         1.407
_refine_diff_density_min         -4.257
_refine_diff_density_rms         0.272
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.137
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     68
_refine_ls_number_reflns         1148
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      1.134
_refine_ls_R_factor_all          0.0571
_refine_ls_R_factor_gt           0.0517
_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^)+(0.0473P)^2^+234.5601P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1305
_refine_ls_wR_factor_ref         0.1342
_reflns_number_gt                1042
_reflns_number_total             1148
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cp43865a_3.txt
_cod_data_source_block           111219a_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      I4/mmm
_cod_database_code               7211272