Novel C1-Bridged Bisboronate Derivatives by Insertion of Diazoalkanes into Bis(pinacolato)diborane(4)⊥
Abu Ali, Hijazi; Goldberg, Israel; Kaufmann, Dieter; Burmeister, Christian; Srebnik, Morris; Organometallics 21 (2002) 1870–; doi:10.1021/om011012b

data_4076739
_publ_section_title
;
 Novel C1-Bridged Bisboronate Derivatives by Insertion of Diazoalkanes
 into Bis(pinacolato)diborane(4)&#x22A5;
;
_journal_issue                   9
_journal_name_full               Organometallics
_journal_page_first              1870
_journal_paper_doi               10.1021/om011012b
_journal_volume                  21
_journal_year                    2002
_chemical_formula_sum            'C21 H34 B2 O5'
_chemical_formula_weight         388.10
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 106.3790(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.1980(2)
_cell_length_b                   9.4150(2)
_cell_length_c                   13.5900(4)
_cell_measurement_reflns_used    3943
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      28.25
_cell_measurement_theta_min      3.12
_cell_volume                     1129.12(5)
_computing_cell_refinement       Denzo
_computing_data_collection       'Collect, Nonius B.V.'
_computing_data_reduction        Denzo
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    SIR-92
_diffrn_ambient_temperature      110(2)
_diffrn_detector_area_resol_mean '56 microns'
_diffrn_measured_fraction_theta_full 0.938
_diffrn_measured_fraction_theta_max 0.938
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       '1 deg. Phi scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0569
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            4537
_diffrn_reflns_theta_full        28.25
_diffrn_reflns_theta_max         28.25
_diffrn_reflns_theta_min         3.12
_exptl_absorpt_coefficient_mu    0.078
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.142
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plates
_exptl_crystal_F_000             420
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.185
_refine_diff_density_min         -0.185
_refine_diff_density_rms         0.039
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.1(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.982
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     263
_refine_ls_number_reflns         4537
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.982
_refine_ls_R_factor_all          0.0481
_refine_ls_R_factor_gt           0.0382
_refine_ls_shift/su_max          0.010
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0657P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0969
_refine_ls_wR_factor_ref         0.1044
_reflns_number_gt                3943
_reflns_number_total             4537
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om011012b.cif
_cod_data_source_block           5d
_cod_original_sg_symbol_H-M      P21
_cod_database_code               4076739