Tantallacarborane Mediated Consecutive C‒C and C‒N Coupling Reactions of Alkyl Isonitriles: A Facile Route to N-Heterocycles
Xiang, Li; Xie, Zuowei; Organometallics 35 (2016) 233–; doi:10.1021/acs.organomet.5b00953

data_4088237
_publ_section_title
;
 Tantallacarborane Mediated Consecutive C--C and C--N Coupling Reactions
 of Alkyl Isonitriles: A Facile Route to N-Heterocycles
;
_journal_issue                   2
_journal_name_full               Organometallics
_journal_page_first              233
_journal_paper_doi               10.1021/acs.organomet.5b00953
_journal_volume                  35
_journal_year                    2016
_chemical_formula_sum            'C29 H73 B9 N5 Si4 Ta'
_chemical_formula_weight         882.52
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/c 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                 107.7800(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   27.3982(17)
_cell_length_b                   17.0318(11)
_cell_length_c                   21.3897(13)
_cell_measurement_reflns_used    381
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      15
_cell_measurement_theta_min      15
_cell_volume                     9504.6(10)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'BRUKER KAPPA APXII DUO DIFFRACTOMETER'
_diffrn_measurement_method       'PHI & OMEGA SCAN'
_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  0.1332
_diffrn_reflns_av_sigmaI/netI    0.0950
_diffrn_reflns_limit_h_max       32
_diffrn_reflns_limit_h_min       -32
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            105091
_diffrn_reflns_theta_full        25.25
_diffrn_reflns_theta_max         25.25
_diffrn_reflns_theta_min         1.43
_exptl_absorpt_coefficient_mu    2.439
_exptl_absorpt_correction_T_max  0.5282
_exptl_absorpt_correction_T_min  0.3752
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.233
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             3648
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.721
_refine_diff_density_min         -0.686
_refine_diff_density_rms         0.147
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     901
_refine_ls_number_reflns         16983
_refine_ls_number_restraints     9
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0860
_refine_ls_R_factor_gt           0.0537
_refine_ls_shift/su_max          0.072
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0782P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1303
_refine_ls_wR_factor_ref         0.1626
_reflns_number_gt                11631
_reflns_number_total             16983
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            om5b00953_si_002.cif
_cod_data_source_block           5
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               4088237