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_4135290
_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_sum            'C28 H50 B20'
_chemical_formula_weight         602.88
_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
_audit_creation_method           SHELXL-2014/6
_cell_angle_alpha                90
_cell_angle_beta                 102.0043(15)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   30.0485(14)
_cell_length_b                   10.8314(5)
_cell_length_c                   23.7342(11)
_cell_measurement_reflns_used    391
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      15
_cell_measurement_theta_min      15
_cell_volume                     7555.8(6)
_computing_cell_refinement       'BRUKER D8VENTURE DIFFRACTOMETER'
_computing_data_collection       'BRUKER D8VENTURE DIFFRACTOMETER'
_computing_data_reduction        'BRUKER D8VENTURE DIFFRACTOMETER'
_computing_molecular_graphics    'BRUKER SHELXTL'
_computing_publication_material  'BRUKER SHELXTL'
_computing_structure_refinement  'SHELXL-2014/6 (Sheldrick, 2014)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'BRUKER D8VENTURE DIFFRACTOMETER'
_diffrn_measurement_method       'PHI & OMEGA SCAN'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0672
_diffrn_reflns_av_unetI/netI     0.0320
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.998
_diffrn_reflns_limit_h_max       36
_diffrn_reflns_limit_h_min       -36
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            90754
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.998
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.250
_diffrn_reflns_theta_min         2.129
_exptl_absorpt_coefficient_mu    0.051
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6474
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.060
_exptl_crystal_description       block
_exptl_crystal_F_000             2544
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.300
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.513
_refine_diff_density_min         -0.263
_refine_diff_density_rms         0.048
_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     433
_refine_ls_number_reflns         6821
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.031
_refine_ls_R_factor_all          0.1013
_refine_ls_R_factor_gt           0.0657
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1047P)^2^+6.4402P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1756
_refine_ls_wR_factor_ref         0.2060
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4585
_reflns_number_total             6821
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            15Ba.cif
_cod_data_source_block           15Ba
_cod_depositor_comments
'Adding full bibliography for 4135283--4135293.cif.'
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               4135290
_shelx_estimated_absorpt_t_min   0.980
_shelx_estimated_absorpt_t_max   0.990
_shelxl_version_number           2014/6
_shelx_res_checksum              50916
_shelx_hkl_checksum              31672