1,1-Alkenylboration of diarylphosphino-enynes: convenient synthetic entry to vicinal P/B Lewis pairs at extended conjugated π-frameworks.
Chen, Guo-Qiang; Kehr, Gerald; Daniliuc, Constantin G.; Erker, Gerhard; Organic & biomolecular chemistry 13 (2015) 764–769; doi:10.1039/c4ob02134g

data_7154169
_publ_section_title
;
 1,1-Alkenylboration of diarylphosphino-enynes: convenient synthetic entry
 to vicinal P/B Lewis pairs at extended conjugated \p-frameworks.
;
_journal_issue                   3
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              764
_journal_page_last               769
_journal_paper_doi               10.1039/c4ob02134g
_journal_volume                  13
_journal_year                    2015
_chemical_formula_sum            'C43 H34 B F10 P'
_chemical_formula_weight         782.48
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 108.5870(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   21.8974(5)
_cell_length_b                   20.2120(5)
_cell_length_c                   20.4155(7)
_cell_measurement_reflns_used    7204
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      68.25
_cell_measurement_theta_min      0.88
_cell_volume                     8564.4(4)
_computing_cell_refinement       'Collect (Nonius B.V., 1998)'
_computing_data_collection       'Collect (Nonius B.V., 1998)'
_computing_data_reduction        'Denzo-SMN (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'XP (BrukerAXS, 2000)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      223(2)
_diffrn_measured_fraction_theta_full 0.977
_diffrn_measured_fraction_theta_max 0.977
_diffrn_measurement_device_type  'Nonius KappaCCD APEXII'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.049
_diffrn_reflns_av_sigmaI/netI    0.0303
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            29400
_diffrn_reflns_theta_full        67.43
_diffrn_reflns_theta_max         67.43
_diffrn_reflns_theta_min         3.05
_exptl_absorpt_coefficient_mu    1.195
_exptl_absorpt_correction_T_max  0.8899
_exptl_absorpt_correction_T_min  0.7961
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'Denzo (Otwinowski, Borek, Majewski & Minor, 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.214
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             3216
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.217
_refine_diff_density_min         -0.235
_refine_diff_density_rms         0.037
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.082
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     503
_refine_ls_number_reflns         7537
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.082
_refine_ls_R_factor_all          0.0565
_refine_ls_R_factor_gt           0.0450
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0659P)^2^+3.7186P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1235
_refine_ls_wR_factor_ref         0.1309
_reflns_number_gt                5941
_reflns_number_total             7537
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ob02134g2.cif
_cod_data_source_block           erk7436
_cod_depositor_comments
'Adding full bibliography for 7154166--7154173.cif.'
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               7154169