Transition-Metal-Free Cross-Coupling Reaction of Iodocarboranes with Terminal Alkynes Enabled by UV Light: Synthesis of 1-Alkynyl-<i>o</i>-Carboranes and Carborane-Fused Cyclics.
Ni, Hangcheng; Lu, Zhenpin; Xie, Zuowei; Journal of the American Chemical Society 142 (2020) 18661–18667; doi:10.1021/jacs.0c08652

data_4135288
_publ_section_title
;
 Transition-Metal-Free Cross-Coupling Reaction of Iodocarboranes with
 Terminal Alkynes Enabled by UV Light: Synthesis of
 1-Alkynyl-<i>o</i>-Carboranes and Carborane-Fused Cyclics.
;
_journal_issue                   43
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              18661
_journal_page_last               18667
_journal_paper_doi               10.1021/jacs.0c08652
_journal_volume                  142
_journal_year                    2020
_chemical_formula_moiety         'C20 H37 B10 N O'
_chemical_formula_sum            'C20 H37 B10 N O'
_chemical_formula_weight         415.60
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2017-12-02
_audit_creation_method
;
Olex2 1.2
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_cell_angle_alpha                90
_cell_angle_beta                 118.6001(15)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   26.7508(14)
_cell_length_b                   8.5536(4)
_cell_length_c                   25.4822(12)
_cell_measurement_reflns_used    9982
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      25.70
_cell_measurement_theta_min      2.534
_cell_volume                     5119.3(4)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      296.15
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0835
_diffrn_reflns_av_unetI/netI     0.0444
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       31
_diffrn_reflns_limit_h_min       -32
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            51749
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.249
_diffrn_reflns_theta_min         2.534
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.058
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6143
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2014/4 (Bruker,2014/4) was used for absorption correction. wR2(int) was 0.1332 before and 0.0646 after correction. The Ratio of minimum to maximum transmission is 0.8239. The \l/2 correction factor is 0.00150.'
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.078
_exptl_crystal_description       block
_exptl_crystal_F_000             1776
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.3
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.265
_refine_diff_density_min         -0.214
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     289
_refine_ls_number_reflns         4628
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.1008
_refine_ls_R_factor_gt           0.0601
_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^)+(0.0640P)^2^+5.1476P]
 where P=(Fo^2^+2Fc^2^)/3
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1360
_refine_ls_wR_factor_ref         0.1570
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3093
_reflns_number_total             4628
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            13Aa.cif
_cod_data_source_block           13Aa
_cod_depositor_comments
'Adding full bibliography for 4135283--4135293.cif.'
_cod_database_code               4135288
_shelxl_version_number           2013-2
_shelx_estimated_absorpt_t_max   0.988
_shelx_estimated_absorpt_t_min   0.977
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All B(H) groups, All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C23(H23A,H23B), C24(H24A,H24B), C25(H25A,H25B)
2.b Me refined with riding coordinates:
 C11(H11A,H11B,H11C), C21(H21A,H21B,H21C), C22(H22A,H22B,H22C), C27(H27A,H27B,
 H27C), C28(H28A,H28B,H28C)
2.c Aromatic/amide H refined with riding coordinates:
 C12(H12), C15(H15), C16(H16), C17(H17), C18(H18), C19(H19)
2.d Boron cage BH refined with riding coordinates:
 B4(H4), B5(H5), B6(H6), B3(H3), B9(H9), B10(H10), B11(H11), B7(H7), B8(H8),
 B12(H12A)
;
_olex2_submission_special_instructions 'No special instructions were received'