Base-stabilized nitrilium ions as convenient imine synthons.
van Dijk, Tom; Bakker, Martijn S.; Holtrop, Flip; Nieger, Martin; Slootweg, J. Chris; Lammertsma, Koop; Organic letters 17 (2015) 1461–1464; doi:10.1021/acs.orglett.5b00339

data_1554831
_publ_section_title
;
 Base-stabilized nitrilium ions as convenient imine synthons.
;
_journal_issue                   6
_journal_name_full               'Organic letters'
_journal_page_first              1461
_journal_page_last               1464
_journal_paper_doi               10.1021/acs.orglett.5b00339
_journal_volume                  17
_journal_year                    2015
_chemical_formula_moiety         'C21 H30 N3, C F3 O3 S'
_chemical_formula_sum            'C22 H30 F3 N3 O3 S'
_chemical_formula_weight         473.55
_chemical_name_systematic
; 
 (Z)-4-(dimethylamino)-1-(1-(mesitylamino)-2,2-dimethylpropyl)pyridin-1-ium
 trifluoromethanesulfonate
;
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'C 1 2/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                 90.90(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   15.441(2)
_cell_length_b                   10.924(1)
_cell_length_c                   27.769(6)
_cell_measurement_reflns_used    795
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      25.0
_cell_measurement_theta_min      2.5
_cell_volume                     4683.4(13)
_computing_cell_refinement       EVALCCD
_computing_data_collection       Collect
_computing_data_reduction        EVALCCD
_computing_molecular_graphics    XP
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Bruker-Nonius KappaCCD'
_diffrn_measurement_method       'rotation in phi and omega, 2 deg.'
_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  0.0864
_diffrn_reflns_av_sigmaI/netI    0.0552
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            22836
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         2.93
_exptl_absorpt_coefficient_mu    0.190
_exptl_absorpt_correction_T_max  0.9803
_exptl_absorpt_correction_T_min  0.6214
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.343
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plates
_exptl_crystal_F_000             2000
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.380
_refine_diff_density_min         -0.385
_refine_diff_density_rms         0.071
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.138
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     294
_refine_ls_number_reflns         4084
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.138
_refine_ls_R_factor_all          0.0994
_refine_ls_R_factor_gt           0.0754
_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^)+(0.0404P)^2^+27.2000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1711
_refine_ls_wR_factor_ref         0.1826
_reflns_number_gt                3052
_reflns_number_total             4084
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol5b00339_si_002.cif
_cod_data_source_block           jcs012_c_compound_5a
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_exptl_crystal_density_meas' value 'none' was changed to
'?' -- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               1554831