The structural landscape of heteroaryl-2-imidazoles: competing halogen- and hydrogen-bond interactions
Aakeröy, Christer B.; Wijethunga, Tharanga K.; Haj, Mohammad Abul; Desper, John; Moore, Curtis; CrystEngComm 16 (2014) 7218–; doi:10.1039/C4CE00803K

data_7216671
_publ_section_title
;
 The structural landscape of heteroaryl-2-imidazoles: competing halogen-
 and hydrogen-bond interactions
;
_journal_issue                   31
_journal_name_full               CrystEngComm
_journal_page_first              7218
_journal_paper_doi               10.1039/C4CE00803K
_journal_volume                  16
_journal_year                    2014
_chemical_formula_moiety
;
(C7 H6 N4)2 (C12 F8 I2)
;
_chemical_formula_sum            'C26 H12 F8 I2 N8'
_chemical_formula_weight         842.24
_chemical_name_systematic
;
TW-1-69 [2-(2-pyrazinyl)-imidazole]2, 4,4'-diiodo-F8-biphenyl
;
_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                67.3200(10)
_cell_angle_beta                 88.558(2)
_cell_angle_gamma                81.6160(10)
_cell_formula_units_Z            2
_cell_length_a                   7.6527(4)
_cell_length_b                   12.7331(7)
_cell_length_c                   15.4446(9)
_cell_measurement_reflns_used    9485
_cell_measurement_temperature    120(2)
_cell_measurement_theta_max      33.35
_cell_measurement_theta_min      2.66
_cell_volume                     1372.95(13)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      120(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.915
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0214
_diffrn_reflns_av_sigmaI/netI    0.0201
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            40305
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         33.45
_diffrn_reflns_theta_min         1.75
_exptl_absorpt_coefficient_mu    2.380
_exptl_absorpt_correction_T_max  0.6226
_exptl_absorpt_correction_T_min  0.5164
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.037
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             804
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.646
_refine_diff_density_min         -0.545
_refine_diff_density_rms         0.089
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     403
_refine_ls_number_reflns         9826
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0234
_refine_ls_R_factor_gt           0.0210
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0250P)^2^+0.7000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0505
_refine_ls_wR_factor_ref         0.0516
_reflns_number_gt                9163
_reflns_number_total             9826
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ce00803k2.cif
_cod_data_source_block           A4D10
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/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 

 Adding full bibliography for 7216657--7216671.cif.
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               7216671