Interplay between Halogen/Hydrogen Bonding and Electrostatic Interactions in 1,1′-Bis(4-iodobenzyl)-4,4′-bipyridine-1,1′-diium Salts
García, Marcos D.; Blanco, Víctor; Platas-Iglesias, Carlos; Peinador, Carlos; Quintela, José M.; Crystal Growth & Design 9 (2009) 5009–; doi:10.1021/cg901175e

data_4509823
_publ_section_title
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 Interplay between Halogen/Hydrogen Bonding and Electrostatic Interactions
 in 1,1&#x2032;-Bis(4-iodobenzyl)-4,4&#x2032;-bipyridine-1,1&#x2032;-diium
 Salts
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_journal_issue                   12
_journal_name_full               'Crystal Growth &amp; Design'
_journal_page_first              5009
_journal_paper_doi               10.1021/cg901175e
_journal_volume                  9
_journal_year                    2009
_chemical_formula_sum            'C24 H24 Br2 I2 N2 O2'
_chemical_formula_weight         786.07
_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                 117.0050(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   8.8044(2)
_cell_length_b                   18.0170(5)
_cell_length_c                   8.9314(3)
_cell_measurement_reflns_used    9554
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      56.941
_cell_measurement_theta_min      5.664
_cell_volume                     1262.30(6)
_computing_cell_refinement
'SAINT V7.12A (Bruker Nonius 2004) in Apex2 suite'
_computing_data_collection       'Apex2  V.1.0-27 (Bruker Nonius, 2005)'
_computing_data_reduction
'SAINT and XPREP Version 6.14 COPYRIGHT(c) 2003 Bruker-AXS'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker X8 APEX'
_diffrn_measurement_method       'Omega scans + Phi 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  0.0269
_diffrn_reflns_av_sigmaI/netI    0.0188
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            16463
_diffrn_reflns_theta_full        28.47
_diffrn_reflns_theta_max         28.47
_diffrn_reflns_theta_min         2.83
_exptl_absorpt_coefficient_mu    5.681
_exptl_absorpt_correction_T_max  0.3817
_exptl_absorpt_correction_T_min  0.2483
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    2.068
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             748
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.21
_refine_diff_density_max         1.112
_refine_diff_density_min         -0.489
_refine_diff_density_rms         0.081
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     193
_refine_ls_number_reflns         3160
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.0202
_refine_ls_R_factor_gt           0.0176
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0177P)^2^+1.2196P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0411
_refine_ls_wR_factor_ref         0.0421
_reflns_number_gt                2933
_reflns_number_total             3160
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            cg901175esup1.cif
_cod_data_source_block           0929598_b1_0s
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
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_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4509823