Identification of 1,3-dialkylimidazolium salt supramolecular aggregates in solution.
Consorti, Crestina S.; Suarez, Paulo A. Z.; de Souza, Roberto F.; Burrow, Robert A.; Farrar, David H.; Lough, Alan J.; Loh, Watson; da Silva, Luis H. M.; Dupont, Jairton; The journal of physical chemistry. B 109 (2005) 4341–4349; doi:10.1021/jp0452709

data_1506367
_publ_section_title
;
 Identification of 1,3-dialkylimidazolium salt supramolecular aggregates
 in solution.
;
_journal_issue                   10
_journal_name_full               'The journal of physical chemistry. B'
_journal_page_first              4341
_journal_page_last               4349
_journal_paper_doi               10.1021/jp0452709
_journal_volume                  109
_journal_year                    2005
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C24 H20 B, C19 H21 N2'
_chemical_formula_sum            'C43 H41 B N2'
_chemical_formula_weight         596.59
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.2
_audit_creation_date             2004-10-13T16:58:04-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90.506(5)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.484(5)
_cell_length_b                   19.347(5)
_cell_length_c                   19.586(5)
_cell_measurement_temperature    100(2)
_cell_volume                     3215(2)
_computing_cell_refinement       'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_data_collection       'KappaCCD server software (Nonius, 1997)'
_computing_data_reduction        'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.899
_diffrn_measured_fraction_theta_max 0.899
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '\f scans and \w scans with \k offsets'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0
_diffrn_reflns_av_unetI/netI     0.0716
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            6087
_diffrn_reflns_theta_full        26.35
_diffrn_reflns_theta_max         26.35
_diffrn_reflns_theta_min         2.96
_exptl_absorpt_coefficient_mu    0.07
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.233
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1272
_refine_diff_density_max         0.208
_refine_diff_density_min         -0.207
_refine_diff_density_rms         0.052
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -3(3)
_refine_ls_extinction_coef       0.0125(12)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     834
_refine_ls_number_reflns         6087
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0692
_refine_ls_R_factor_gt           0.0461
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0610P)^2^+0.0610P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1036
_refine_ls_wR_factor_ref         0.1112
_reflns_number_gt                4800
_reflns_number_total             6087
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jp0452709si20041015_040118.cif
_cod_data_source_block           k99128
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               1506367