Synthesis, structural characterisation, and synthetic application of stable seleniranium ions.
Bock, Jonathan; Daniliuc, Constantin G.; Bergander, Klaus; Mück-Lichtenfeld, Christian; Hennecke, Ulrich; Organic & biomolecular chemistry 17 (2019) 3181–3185; doi:10.1039/c9ob00078j

data_7156709
_publ_section_title
;
 Synthesis, structural characterisation, and synthetic application of
 stable seleniranium ions.
;
_journal_issue                   12
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              3181
_journal_page_last               3185
_journal_paper_doi               10.1039/c9ob00078j
_journal_volume                  17
_journal_year                    2019
_chemical_formula_sum            'C23 H28 Se'
_chemical_formula_weight         383.41
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           'APEX3 v2016.1-0'
_audit_update_record
;
2018-11-27 deposited with the CCDC.
2019-02-06 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 95.800(4)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   22.6370(13)
_cell_length_b                   8.9594(5)
_cell_length_c                   18.7848(11)
_cell_measurement_reflns_used    4144
_cell_measurement_temperature    106.(2)
_cell_measurement_theta_max      66.5639
_cell_measurement_theta_min      3.9257
_cell_volume                     3790.3(4)
_computing_cell_refinement       'SAINT V8.37A (Bruker AXS Inc., 2015)'
_computing_data_collection       'APEX3 v2016.1-0 (Bruker AXS Inc., 2016)'
_computing_data_reduction        'SAINT V8.37A (Bruker AXS Inc., 2015)'
_computing_molecular_graphics    'APEX3 v2016.1-0 (Bruker AXS Inc., 2016)'
_computing_publication_material  'APEX3 v2016.1-0 (Bruker AXS Inc., 2016)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      106.(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.982
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'Kappa CCD APEXII'
_diffrn_measurement_method       'phi / omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0932
_diffrn_reflns_av_unetI/netI     0.0482
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -25
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            27577
_diffrn_reflns_theta_full        66.76
_diffrn_reflns_theta_max         66.76
_diffrn_reflns_theta_min         3.93
_diffrn_source                   'fine-focus sealed tube'
_diffrn_source_type              'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    2.656
_exptl_absorpt_correction_T_max  0.93
_exptl_absorpt_correction_T_min  0.80
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Bruker AXS (2014). SADABS, Version 2014/5, Bruker AXS Inc., Madison, Wisconsin,
USA.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.344
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1600
_exptl_crystal_size_max          0.080
_exptl_crystal_size_mid          0.060
_exptl_crystal_size_min          0.030
_refine_diff_density_max         0.435
_refine_diff_density_min         -0.355
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.960
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     220
_refine_ls_number_reflns         3305
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.960
_refine_ls_R_factor_all          0.0568
_refine_ls_R_factor_gt           0.0411
_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^)+(0.0703P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1020
_refine_ls_wR_factor_ref         0.1092
_reflns_number_gt                2567
_reflns_number_total             3305
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9ob00078j2.cif
_cod_data_source_block           stu9295
_cod_depositor_comments
'Adding full bibliography for 7156707--7156712.cif.'
_cod_database_code               7156709
_shelx_res_checksum              29083
_shelx_hkl_checksum              80161