Oxidative Bond Formation and Reductive Bond Cleavage at Main Group Metal Centers: Reactivity of Five-Valence-Electron MX2 Radicals.
Protchenko, Andrey V.; Dange, Deepak; Blake, Matthew P.; Schwarz, Andrew D.; Jones, Cameron; Mountford, Philip; Aldridge, Simon; Journal of the American Chemical Society 136 (2014) 10902–10905; doi:10.1021/ja5062467

data_4122333
_publ_section_title
;
 Oxidative Bond Formation and Reductive Bond Cleavage at Main Group Metal
 Centers: Reactivity of Five-Valence-Electron MX2 Radicals.
;
_journal_issue                   31
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              10902
_journal_page_last               10905
_journal_paper_doi               10.1021/ja5062467
_journal_volume                  136
_journal_year                    2014
_chemical_formula_moiety         'C58 H82 B2 N4'
_chemical_formula_sum            'C58 H82 B2 N4'
_chemical_formula_weight         856.94
_chemical_name_systematic
;
{C6H10}{B(NArCH)2}2 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 113.2870(17)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   24.2497(4)
_cell_length_b                   12.56150(10)
_cell_length_c                   19.5541(3)
_cell_measurement_reflns_used    15315
_cell_measurement_temperature    150
_cell_measurement_theta_max      76
_cell_measurement_theta_min      4
_cell_volume                     5471.19(15)
_computing_cell_refinement       'CrysAlis, (Oxford Diffraction, 2002)'
_computing_data_collection       'SuperNova, (Oxford Diffraction, 2010)'
_computing_data_reduction        'CrysAlis, (Oxford Diffraction, 2002)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'Oxford Diffraction SuperNova'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54180
_diffrn_reflns_av_R_equivalents  0.029
_diffrn_reflns_limit_h_max       28
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            32589
_diffrn_reflns_theta_full        74.624
_diffrn_reflns_theta_max         76.147
_diffrn_reflns_theta_min         3.969
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.442
_exptl_absorpt_correction_T_max  0.92
_exptl_absorpt_correction_T_min  0.75
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrysAlis, (Oxford Diffraction, 2002)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.040
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1872
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.25
_refine_diff_density_min         -0.28
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   1.0511
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     289
_refine_ls_number_reflns         4869
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0499
_refine_ls_R_factor_gt           0.0451
_refine_ls_shift/su_max          0.0004004
_refine_ls_shift/su_mean         0.0000423
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details
;
 Method, part 1, Chebychev polynomial, (Watkin, 1994, Prince, 1982) 
 [weight] = 1.0/[A~0~*T~0~(x)+A~1~*T~1~(x) ... +A~n-1~]*T~n-1~(x)] 
 where A~i~ are the Chebychev coefficients listed below and x= Fcalc/Fmax 
 Method = Robust Weighting (Prince, 1982) 
 W = [weight] * [1-(deltaF/6*sigmaF)^2^]^2^ 
 A~i~ are: 
 6.18 3.07 4.60 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0669
_refine_ls_wR_factor_gt          0.0606
_refine_ls_wR_factor_ref         0.0595
_reflns_limit_h_max              27
_reflns_limit_h_min              -30
_reflns_limit_k_max              15
_reflns_limit_k_min              0
_reflns_limit_l_max              24
_reflns_limit_l_min              0
_reflns_number_gt                5050
_reflns_number_total             5704
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   3.10
_oxford_diffrn_Wilson_scale      0.26
_oxford_refine_ls_r_factor_ref   0.0437
_oxford_refine_ls_scale          2.201(4)
_oxford_reflns_number_all        5682
_oxford_reflns_threshold_expression_ref I>3.0\s(I)
_cod_data_source_file            ja5062467_si_007.cif
_cod_data_source_block           MPB201
_cod_depositor_comments
'Adding full bibliography for 4122328--4122335.cif.'
_cod_original_sg_symbol_Hall     '-C 2yc '
_cod_original_sg_symbol_H-M      'C 1 2/c 1 '
_cod_database_code               4122333