Bent N-Heteroarenes.
Hahn, Sebastian; Geyer, Florian L.; Koser, Silke; Tverskoy, Olena; Rominger, Frank; Bunz, Uwe H. F.; The Journal of organic chemistry 81 (2016) 8485–8494; doi:10.1021/acs.joc.6b01654

data_4037177
_publ_section_title
;
 Bent N-Heteroarenes.
;
_journal_issue                   18
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              8485
_journal_page_last               8494
_journal_paper_doi               10.1021/acs.joc.6b01654
_journal_volume                  81
_journal_year                    2016
_chemical_formula_sum            'C37 H50 N2 Si2'
_chemical_formula_weight         578.97
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 96.813(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.8801(10)
_cell_length_b                   18.143(2)
_cell_length_c                   21.186(3)
_cell_measurement_reflns_used    5915
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      29.06
_cell_measurement_theta_min      2.57
_cell_volume                     3389.2(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.973
_diffrn_measurement_device_type  'Bruker APEX area detector'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0490
_diffrn_reflns_av_unetI/netI     0.0558
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.973
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            34016
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.973
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.188
_diffrn_reflns_theta_min         1.936
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    0.132
_exptl_absorpt_correction_T_max  0.9595
_exptl_absorpt_correction_T_min  0.8991
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.135
_exptl_crystal_description       octahedron
_exptl_crystal_F_000             1256
_exptl_crystal_size_max          0.390
_exptl_crystal_size_mid          0.170
_exptl_crystal_size_min          0.130
_refine_diff_density_max         0.471
_refine_diff_density_min         -0.429
_refine_diff_density_rms         0.062
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     382
_refine_ls_number_reflns         8932
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0829
_refine_ls_R_factor_gt           0.0557
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0336P)^2^+2.6563P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1103
_refine_ls_wR_factor_ref         0.1278
_reflns_Friedel_coverage         0.000
_reflns_number_gt                6654
_reflns_number_total             8932
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo6b01654_si_003.cif
_cod_data_source_block           seh6
_cod_original_cell_volume        3389.3(7)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4037177
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.950
_shelx_estimated_absorpt_t_max   0.983
_shelx_res_checksum              24873
_shelx_hkl_checksum              36803