Direct and Base-Catalyzed Diboration of Alkynes Using the Unsymmetrical Diborane(4), pinB-BMes2.
Kojima, Chiemi; Lee, Ka-Ho; Lin, Zhenyang; Yamashita, Makoto; Journal of the American Chemical Society 138 (2016) 6662–6669; doi:10.1021/jacs.6b03686

data_4125080
_publ_section_title
;
 Direct and Base-Catalyzed Diboration of Alkynes Using the Unsymmetrical
 Diborane(4), pinB-BMes2.
;
_journal_issue                   20
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              6662
_journal_page_last               6669
_journal_paper_doi               10.1021/jacs.6b03686
_journal_volume                  138
_journal_year                    2016
_chemical_formula_moiety         'C34 H45 B2 N O2'
_chemical_formula_sum            'C34 H45 B2 N O2'
_chemical_formula_weight         521.33
_space_group_crystal_system      monoclinic
_space_group_IT_number           7
_space_group_name_Hall           'P -2yac'
_space_group_name_H-M_alt        'P 1 n 1'
_symmetry_space_group_name_Hall  'P -2yac'
_symmetry_space_group_name_H-M   'P 1 n 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014
_cell_angle_alpha                90
_cell_angle_beta                 96.220(5)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   9.667(3)
_cell_length_b                   11.589(4)
_cell_length_c                   14.115(4)
_cell_measurement_reflns_used    4843
_cell_measurement_temperature    93(2)
_cell_measurement_theta_max      31.4096
_cell_measurement_theta_min      2.4356
_cell_volume                     1572.0(9)
_computing_cell_refinement       'RIGAKU CrystalClear'
_computing_data_collection       'RIGAKU CrystalClear'
_computing_data_reduction        'RIGAKU CrystalClear'
_computing_molecular_graphics    'Yadokari-XG 2009(Wakita Nemoto et al.)'
_computing_publication_material  'Yadokari-XG 2009(Wakita,Nemoto et al.)'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    SIR-97
_diffrn_ambient_temperature      93(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.982
_diffrn_measurement_device_type  'Rigaku VariMax Saturn'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_source         'rotating-anode X-ray tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0447
_diffrn_reflns_av_unetI/netI     0.0811
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.982
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            12596
_diffrn_reflns_point_group_measured_fraction_full 0.894
_diffrn_reflns_point_group_measured_fraction_max 0.866
_diffrn_reflns_theta_full        27.474
_diffrn_reflns_theta_max         27.474
_diffrn_reflns_theta_min         3.004
_exptl_absorpt_coefficient_mu    0.066
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8748
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Jacobson, R. (1998) Private communication'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.101
_exptl_crystal_description       Prism
_exptl_crystal_F_000             564
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.170
_refine_diff_density_max         0.212
_refine_diff_density_min         -0.302
_refine_diff_density_rms         0.058
_refine_ls_abs_structure_details
;
 Flack x determined using 1312 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.3(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.946
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     406
_refine_ls_number_reflns         6234
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.946
_refine_ls_R_factor_all          0.0659
_refine_ls_R_factor_gt           0.0471
_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^)+(0.0518P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0963
_refine_ls_wR_factor_ref         0.1060
_reflns_Friedel_coverage         0.759
_reflns_Friedel_fraction_full    0.795
_reflns_Friedel_fraction_max     0.749
_reflns_number_gt                4258
_reflns_number_total             6234
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja6b03686_si_002.cif
_cod_data_source_block           3Cb
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4268 2015-11-12 08:31:59Z antanas 

 Adding full bibliography for 4125073--4125084.cif.
;
_cod_original_cell_volume        1572.1(8)
_cod_database_code               4125080
_shelx_estimated_absorpt_t_min   0.987
_shelx_estimated_absorpt_t_max   0.989
_shelxl_version_number           2014-3
_shelx_res_checksum              75117
_shelx_hkl_checksum              73295