Brønsted Base Mediated Stereoselective Diphosphination of Terminal Alkynes with Diphosphanes
Okugawa, Yuto; Hirano, Koji; Miura, Masahiro; Organic Letters  (2017) –; doi:10.1021/acs.orglett.7b01209

data_1546038
_publ_section_title
;
 Br\/onsted Base Mediated Stereoselective Diphosphination of Terminal
 Alkynes with Diphosphanes
;
_journal_name_full               'Organic Letters'
_journal_paper_doi               10.1021/acs.orglett.7b01209
_journal_year                    2017
_chemical_formula_moiety         'C32 H38 P2 S2'
_chemical_formula_sum            'C32 H38 P2 S2'
_chemical_formula_weight         548.72
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                73.63(5)
_cell_angle_beta                 73.24(5)
_cell_angle_gamma                67.98(4)
_cell_formula_units_Z            2
_cell_length_a                   9.9187(10)
_cell_length_b                   11.151(11)
_cell_length_c                   15.866(15)
_cell_measurement_reflns_used    3884
_cell_measurement_temperature    173
_cell_measurement_theta_max      27.50
_cell_measurement_theta_min      3.00
_cell_volume                     1528(2)
_computing_cell_refinement       'CrystalClear-SM Expert 2.0 r15'
_computing_data_collection       'CrystalClear-SM Expert 2.0 r15 (Rigaku, 2011)'
_computing_data_reduction        'CrystalClear-SM Expert 2.0 r15'
_computing_molecular_graphics    'CrystalStructure 4.2.1'
_computing_publication_material  'CrystalStructure 4.2.1 (Rigaku, 2016)'
_computing_structure_refinement  'SHELXL Version 2014/7 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      173
_diffrn_detector_area_resol_mean 13.653
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.966
_diffrn_measurement_device_type  'Rigaku XtaLAB mini'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0199
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.966
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            8974
_diffrn_reflns_point_group_measured_fraction_full 0.993
_diffrn_reflns_point_group_measured_fraction_max 0.966
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.453
_diffrn_reflns_theta_min         3.236
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.298
_exptl_absorpt_correction_T_max  0.945
_exptl_absorpt_correction_T_min  0.875
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'NUMABS (Rigaku, 1999)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.193
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             584.00
_exptl_crystal_size_max          0.640
_exptl_crystal_size_mid          0.430
_exptl_crystal_size_min          0.190
_refine_diff_density_max         0.32
_refine_diff_density_min         -0.41
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.113
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     325
_refine_ls_number_reflns         6762
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0511
_refine_ls_R_factor_gt           0.0420
_refine_ls_shift/su_max          0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0356P)^2^+0.3728P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0944
_refine_ls_wR_factor_ref         0.1026
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5874
_reflns_number_total             6762
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            ol7b01209_si_002.cif
_cod_data_source_block           750-1
_cod_database_code               1546038
_shelx_res_checksum              13502
_shelx_hkl_checksum              88519