A Boradiselenirane and a Boraditellurirane: Isolable Heavy Analogs of Dioxiranes and Dithiiranes.
Liu, Siyuan; Légaré, Marc-André; Hofmann, Alexander; Braunschweig, Holger; Journal of the American Chemical Society 140 (2018) 11223–11226; doi:10.1021/jacs.8b07829

data_4133001
_publ_section_title
;
 A Boradiselenirane and a Boraditellurirane: Isolable Heavy Analogs of
 Dioxiranes and Dithiiranes.
;
_journal_issue                   36
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11223
_journal_page_last               11226
_journal_paper_doi               10.1021/jacs.8b07829
_journal_volume                  140
_journal_year                    2018
_chemical_formula_moiety         'C18 H34 B2 N4 Se2'
_chemical_formula_sum            'C18 H34 B2 N4 Se2'
_chemical_formula_weight         486.03
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     iterative
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2016/6
_cell_angle_alpha                108.77(2)
_cell_angle_beta                 100.22(2)
_cell_angle_gamma                108.10(2)
_cell_formula_units_Z            1
_cell_length_a                   8.085(2)
_cell_length_b                   8.208(3)
_cell_length_c                   9.845(3)
_cell_measurement_reflns_used    9947
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.46
_cell_measurement_theta_min      2.30
_cell_volume                     559.3(3)
_computing_cell_refinement       'Saint+ ver. V8.38A (Bruker AXS)'
_computing_data_collection       'APEX2 ver. 2014.9 (Bruker AXS)'
_computing_data_reduction        'Saint+ ver. V8.38A (Bruker AXS)'
_computing_molecular_graphics    'ShelXLe (Huebschle et all, 2011)'
_computing_publication_material  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_computing_structure_solution    'SHELXT (Sheldrick, 2014)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 'CCD area detector (Apex2)'
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker X8-APEX II'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'multi-layer mirror'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_unetI/netI     0.0360
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            2185
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         26.021
_diffrn_reflns_theta_min         2.297
_diffrn_source                   'rotating-anode (Nonius FR-591)'
_exptl_absorpt_coefficient_mu    3.315
_exptl_absorpt_correction_T_max  0.4305
_exptl_absorpt_correction_T_min  0.2081
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SadAbs 2016/2 (Bruker AXS)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.443
_exptl_crystal_description       plate
_exptl_crystal_F_000             248
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.283
_exptl_crystal_size_min          0.256
_refine_diff_density_max         2.772
_refine_diff_density_min         -1.285
_refine_diff_density_rms         0.170
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.483
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     124
_refine_ls_number_reflns         2185
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.483
_refine_ls_R_factor_all          0.0549
_refine_ls_R_factor_gt           0.0526
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1699
_refine_ls_wR_factor_ref         0.1708
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2066
_reflns_number_total             2185
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b07829_si_008.cif
_cod_data_source_block           alho081_a_tw
_cod_database_code               4133001
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.299
_shelx_estimated_absorpt_t_max   0.484
_shelx_res_checksum              75990
_shelx_hkl_checksum              16895