Borane-induced ring closure reaction of oligomethylene-linked bis-allenes
Tao, Xin; Škoch, Karel; Daniliuc, Constantin G.; Kehr, Gerald; Erker, Gerhard; Chemical Science 11 (2020) 1542–1548; doi:10.1039/C9SC03870A

data_1556649
_publ_section_title
;
 Borane-induced ring closure reaction of oligomethylene-linked bis-allenes
;
_journal_issue                   6
_journal_name_full               'Chemical Science'
_journal_page_first              1542
_journal_page_last               1548
_journal_paper_doi               10.1039/C9SC03870A
_journal_volume                  11
_journal_year                    2020
_chemical_absolute_configuration ad
_chemical_formula_sum            'C27 H20 B F10 N'
_chemical_formula_weight         559.25
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           'APEX3 v2016.1-0'
_audit_update_record
;
2019-06-13 deposited with the CCDC.	2019-12-17 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.7240(3)
_cell_length_b                   14.9525(4)
_cell_length_c                   16.4897(5)
_cell_measurement_reflns_used    9961
_cell_measurement_temperature    100.(2)
_cell_measurement_theta_max      68.2871
_cell_measurement_theta_min      3.9909
_cell_volume                     2397.57(12)
_computing_cell_refinement       'SAINT V8.37A (Bruker AXS Inc., 2015)'
_computing_data_collection
;

APEX3 v2016.1-0 (Bruker AXS Inc., 2016)
;
_computing_data_reduction        'SAINT V8.37A (Bruker AXS Inc., 2015)'
_computing_molecular_graphics    'XP (Sheldrick, 2014)'
_computing_publication_material  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100.(2)
_diffrn_detector_area_resol_mean 10.4167
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker D8 Venture PHOTON 100 CMOS'
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_monochromator  'MX mirror'
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0727
_diffrn_reflns_av_unetI/netI     0.0496
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            22711
_diffrn_reflns_theta_full        68.38
_diffrn_reflns_theta_max         68.38
_diffrn_reflns_theta_min         3.99
_diffrn_source                   'Cu ImS'
_diffrn_source_type              'micro focus tube'
_exptl_absorpt_coefficient_mu    1.274
_exptl_absorpt_correction_T_max  0.90
_exptl_absorpt_correction_T_min  0.80
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Bruker AXS (2014). SADABS, Version 2014/5, Bruker AXS Inc., Madison, Wisconsin,
USA.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.549
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1136
_exptl_crystal_size_max          0.173
_exptl_crystal_size_mid          0.119
_exptl_crystal_size_min          0.087
_refine_diff_density_max         0.273
_refine_diff_density_min         -0.219
_refine_ls_abs_structure_details
;

Flack x determined using 1349 quotients [(I+)-(I-)]/[(I+)+(I-)]
(Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.03(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     380
_refine_ls_number_reflns         4353
_refine_ls_number_restraints     71
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0578
_refine_ls_R_factor_gt           0.0457
_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^)+(0.0281P)^2^+1.4028P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0892
_refine_ls_wR_factor_ref         0.0946
_reflns_number_gt                3722
_reflns_number_total             4353
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9sc03870a2.cif
_cod_data_source_block           erk9368
_cod_depositor_comments
;Adding full bibliography for 1556647--1556655.cif.

 Adding full bibliography for 1556647--1556655.cif.
;
_cod_database_code               1556649
_shelx_res_checksum              36350