Three-Component [2+2+1] Cross-cyclotrimerization of Carboryne, Unactivated Alkene, and Trimethylsilylalkyne Co-mediated by Zr and Ni
Yangjian Quan; Jiji Zhang; Zuowei Xie; Journal of the American Chemical Society 135 (2013) 18742–18745; doi:10.1021/ja410233e

data_4121328
_publ_section_title
;
 Three-Component [2+2+1] Cross-cyclotrimerization of Carboryne,
 Unactivated Alkene, and Trimethylsilylalkyne Co-mediated by Zr and Ni
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              18742
_journal_page_last               18745
_journal_paper_doi               10.1021/ja410233e
_journal_volume                  135
_journal_year                    2013
_chemical_formula_sum            'C16 H40 B10 Si2'
_chemical_formula_weight         396.76
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   40.858(2)
_cell_length_b                   6.6959(3)
_cell_length_c                   9.2019(5)
_cell_measurement_reflns_used    129
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      15
_cell_measurement_theta_min      15
_cell_volume                     2517.5(2)
_computing_cell_refinement       'BRUKER KAPPA APEXII DUO DIFFRACTOMETER'
_computing_data_collection       'BRUKER KAPPA APEXII DUO DIFFRACTOMETER'
_computing_data_reduction        'BRUKER KAPPA APEXII DUO DIFFRACTOMETER'
_computing_molecular_graphics    'SIEMENS SHELXTL'
_computing_publication_material  'SIEMENS SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'BRUKER KAPPA APEXII 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  0.0438
_diffrn_reflns_av_sigmaI/netI    0.0370
_diffrn_reflns_limit_h_max       49
_diffrn_reflns_limit_h_min       -48
_diffrn_reflns_limit_k_max       3
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            18190
_diffrn_reflns_theta_full        25.25
_diffrn_reflns_theta_max         25.25
_diffrn_reflns_theta_min         1.00
_exptl_absorpt_coefficient_mu    0.142
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6373
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.047
_exptl_crystal_description       block
_exptl_crystal_F_000             856
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.555
_refine_diff_density_min         -0.339
_refine_diff_density_rms         0.058
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.5(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.094
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     253
_refine_ls_number_reflns         4538
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.137
_refine_ls_R_factor_all          0.0755
_refine_ls_R_factor_gt           0.0645
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1191P)^2^+0.8704P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1816
_refine_ls_wR_factor_ref         0.1928
_reflns_number_gt                3900
_reflns_number_total             4538
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja410233e_si_001_7.cif
_cod_data_source_block           5r
_cod_database_code               4121328