Structure and Reactivity of Indolylmethylium Ions: Scope and Limitations in Synthetic Applications.
Follet, Elsa; Berionni, Guillaume; Mayer, Peter; Mayr, Herbert; The Journal of organic chemistry 80 (2015) 8643–8656; doi:10.1021/acs.joc.5b01298

data_4031350
_publ_section_title
;
 Structure and Reactivity of Indolylmethylium Ions: Scope and Limitations
 in Synthetic Applications.
;
_journal_issue                   17
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              8643
_journal_page_last               8656
_journal_paper_doi               10.1021/acs.joc.5b01298
_journal_volume                  80
_journal_year                    2015
_chemical_formula_moiety         'C21 H21 N2, B F4'
_chemical_formula_sum            'C21 H21 B F4 N2'
_chemical_formula_weight         388.210
_space_group_IT_number           7
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      7
_symmetry_space_group_name_Hall  'P -2yc'
_symmetry_space_group_name_H-M   'P 1 c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_block_code                C21H21N2_BF4_rv330_mayr
_audit_creation_method           'form98_non/compatible with shelxl97-2'
_audit_update_record             21-Jan-14
_cell_angle_alpha                90.00
_cell_angle_beta                 117.703(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.6174(4)
_cell_length_b                   8.8763(5)
_cell_length_c                   15.4323(7)
_cell_measurement_reflns_used    122
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.4481
_cell_measurement_theta_min      3.7342
_cell_volume                     923.83(8)
_computing_cell_refinement       'APEX2 v2012.4-3 (Bruker AXS)'
_computing_data_collection       'Bruker Instrument Service v3.0.21'
_computing_data_reduction        'SAINT V8.18C (Bruker AXS Inc., 2011)'
_computing_structure_refinement
;
Sheldrick, G. M. (2008).
<i>Acta Cryst.</i> A<b>64</b>, 112--122.
;
_computing_structure_solution
;
A. Altomare, M. C. Burla, M. Camalli, G. L. Cascarano, C. Giacovazzo, A.
Guagliardi, A. G. G. Moliterni, G. Polidori, R. Spagna: SIR97: a new tool for
crystal structure determination and refinement; J. Appl. Crystallogr. 1999,
32, 115-119.
;
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 10.4167
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       'fixed-chi three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8Venture'
_diffrn_measurement_method       'mix of phi and omega scans'
_diffrn_radiation_collimation    0.8_mm
_diffrn_radiation_monochromator  'focusing mirrors'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0251
_diffrn_reflns_av_sigmaI/netI    0.0192
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            18399
_diffrn_reflns_theta_full        26.42
_diffrn_reflns_theta_max         26.41
_diffrn_reflns_theta_min         3.10
_diffrn_source_current           50
_diffrn_source_power             2.5
_diffrn_source_type              'Bruker TXS'
_diffrn_source_voltage           50
_exptl_absorpt_coefficient_mu    0.110
_exptl_absorpt_correction_T_max  0.9585
_exptl_absorpt_correction_T_min  0.9258
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2012/1 (Bruker AXS Inc.)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.39560(12)
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             404
_exptl_crystal_size_max          0.137
_exptl_crystal_size_mid          0.114
_exptl_crystal_size_min          0.095
_refine_diff_density_max         0.303
_refine_diff_density_min         -0.169
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.0(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.073
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     258
_refine_ls_number_reflns         3566
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.073
_refine_ls_R_factor_all          0.0330
_refine_ls_R_factor_gt           0.0308
_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^)+(0.0428P)^2^+0.2708P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0779
_refine_ls_wR_factor_ref         0.0798
_reflns_number_gt                3416
_reflns_number_total             3566
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo5b01298_si_003.cif
_cod_data_source_block           rv330
_cod_depositor_comments
'Adding full bibliography for 4031347--4031351.cif.'
_cod_original_sg_symbol_H-M      'P c'
_cod_database_code               4031350