N,N′-Dihexylbenzimidazolium salts. Anion-controlled bilayer structures viaπ–π dimer or C–H⋯π catemer motifs
Lee, Kwang-Ming; Lee, Ching-Kuan; Lin, Ivan J. B.; CrystEngComm 12 (2010) 4347–; doi:10.1039/c0ce00105h

data_7212787
_publ_section_title
;
 N,N&#x2032;-Dihexylbenzimidazolium salts. Anion-controlled bilayer
 structures via\p--\p dimer or C--H&#x22EF;\p catemer motifs
;
_journal_issue                   12
_journal_name_full               CrystEngComm
_journal_page_first              4347
_journal_paper_doi               10.1039/c0ce00105h
_journal_volume                  12
_journal_year                    2010
_chemical_formula_sum            'C19 H32 I N2 O0.5'
_chemical_formula_weight         423.36
_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                69.402(14)
_cell_angle_beta                 76.16(3)
_cell_angle_gamma                86.15(3)
_cell_formula_units_Z            4
_cell_length_a                   9.288(7)
_cell_length_b                   13.7946(13)
_cell_length_c                   18.739(3)
_cell_measurement_reflns_used    21
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      12.62
_cell_measurement_theta_min      4.84
_cell_volume                     2181.8(17)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.983
_diffrn_measurement_device_type  'Siemens P4'
_diffrn_measurement_method       '\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  0.0247
_diffrn_reflns_av_sigmaI/netI    0.0407
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            8091
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.26
_diffrn_standards_decay_%        99.94
_diffrn_standards_interval_count 198
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    1.471
_exptl_absorpt_correction_T_max  0.6666
_exptl_absorpt_correction_T_min  0.5907
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.289
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             868
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.30
_refine_diff_density_max         1.629
_refine_diff_density_min         -0.881
_refine_diff_density_rms         0.082
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.992
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     407
_refine_ls_number_reflns         7556
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.992
_refine_ls_R_factor_all          0.0713
_refine_ls_R_factor_gt           0.0497
_refine_ls_shift/su_max          0.012
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0900P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1363
_refine_ls_wR_factor_ref         0.1457
_reflns_number_gt                5021
_reflns_number_total             7556
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0ce00105h.txt
_cod_data_source_block           2
_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 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        2181.6(16)
_cod_original_sg_symbol_H-M      'P-1 '
_cod_database_code               7212787