Ionic liquid characteristics of 1-alkyl-n-cyanopyridinium and 1-alkyl-n-(trifluoromethyl)pyridinium salts
Hardacre, Christopher; Holbrey, John D.; Mullan, Claire L.; Nieuwenhuyzen, Mark; Reichert, W. Matthew; Seddon, Kenneth R.; Teat, Simon J.; New Journal of Chemistry 32 (2008) 1953–; doi:10.1039/b805063e

data_7053743
_publ_section_title
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 Ionic liquid characteristics of 1-alkyl-n-cyanopyridinium and
 1-alkyl-n-(trifluoromethyl)pyridinium salts
;
_journal_issue                   11
_journal_name_full               'New Journal of Chemistry'
_journal_page_first              1953
_journal_paper_doi               10.1039/b805063e
_journal_volume                  32
_journal_year                    2008
_chemical_formula_sum            'C10 H9 F6 N3 O4 S2'
_chemical_formula_weight         413.32
_chemical_name_systematic
;
1-Ethyl-3-cyanopyridinium bis{(trifluoromethyl)sulfonyl}amide
;
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 91.871(18)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.226(8)
_cell_length_b                   15.886(15)
_cell_length_c                   12.553(12)
_cell_measurement_reflns_used    2605
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      22.77
_cell_measurement_theta_min      2.48
_cell_volume                     1640(3)
_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      298(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_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  0.0635
_diffrn_reflns_av_sigmaI/netI    0.0956
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            15495
_diffrn_reflns_theta_full        24.98
_diffrn_reflns_theta_max         24.98
_diffrn_reflns_theta_min         2.07
_exptl_absorpt_coefficient_mu    0.410
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.675
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             832
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.974
_refine_diff_density_min         -0.431
_refine_diff_density_rms         0.098
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    calc
_refine_ls_matrix_type           full
_refine_ls_number_parameters     227
_refine_ls_number_reflns         2873
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.1343
_refine_ls_R_factor_gt           0.0909
_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^)+(0.1327P)^2^+4.5618P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2428
_refine_ls_wR_factor_ref         0.2954
_reflns_number_gt                1738
_reflns_number_total             2873
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b805063esup1.cif
_cod_data_source_block           24
_cod_depositor_comments
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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 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not_measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        1639(3)
_cod_original_sg_symbol_H-M      P2(1)/n
_cod_database_code               7053743