[E(μ-NBbp)]<sub>2</sub> (E = P, As) - group 15 biradicals synthesized from acyclic precursors.
Bresien, Jonas; Schulz, Axel; Szych, Lilian Sophie; Villinger, Alexander; Wustrack, Ronald; Dalton transactions (Cambridge, England : 2003) 48 (2019) 11103–11111; doi:10.1039/c9dt01654f

data_7700280
_publ_section_title
;
 [E(\m-NBbp)]<sub>2</sub> (E = P, As) - group 15 biradicals synthesized
 from acyclic precursors.
;
_journal_issue                   29
_journal_name_full
'Dalton transactions (Cambridge, England : 2003)'
_journal_page_first              11103
_journal_page_last               11111
_journal_paper_doi               10.1039/c9dt01654f
_journal_volume                  48
_journal_year                    2019
_chemical_formula_moiety         'C20 H41 Br Si4'
_chemical_formula_sum            'C20 H41 Br Si4'
_chemical_formula_weight         473.80
_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'
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2018-11-29 deposited with the CCDC.    2019-06-17 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 102.629(5)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   8.4553(13)
_cell_length_b                   13.167(2)
_cell_length_c                   12.639(2)
_cell_measurement_reflns_used    3082
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      21.97
_cell_measurement_theta_min      2.26
_cell_volume                     1373.1(4)
_computing_cell_refinement       'Bruker Apex V7.51A'
_computing_data_collection       'Bruker Apex V7.51A'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'ORTEP-3v2.01 (Farrugia, 1997)'
_computing_publication_material  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      193(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Apex Kappa-II-CCD-diffractometer'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0480
_diffrn_reflns_av_unetI/netI     0.0406
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            18330
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         29.000
_diffrn_reflns_theta_min         2.913
_diffrn_source                   'sealed tube'
_exptl_absorpt_coefficient_mu    1.674
_exptl_absorpt_correction_T_max  0.7462
_exptl_absorpt_correction_T_min  0.6514
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   '(SADABS; Sheldrick, 2004)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.146
_exptl_crystal_description       block
_exptl_crystal_F_000             504
_exptl_crystal_size_max          0.390
_exptl_crystal_size_mid          0.150
_exptl_crystal_size_min          0.090
_refine_diff_density_max         0.336
_refine_diff_density_min         -0.264
_refine_diff_density_rms         0.044
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.031
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     227
_refine_ls_number_reflns         3648
_refine_ls_number_restraints     12
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0795
_refine_ls_R_factor_gt           0.0398
_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^)+(0.0461P)^2^+0.1562P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0873
_refine_ls_wR_factor_ref         0.1023
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2330
_reflns_number_total             3648
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9dt01654f2.cif
_cod_data_source_block           is_ls06
_cod_depositor_comments
'Adding full bibliography for 7700277--7700283.cif.'
_cod_database_code               7700280
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.561
_shelx_estimated_absorpt_t_max   0.864
_shelx_res_checksum              34740