Terminal Alkyne Activation by Frustrated and Classical Lewis Acid/Phosphine Pairs
Meghan A. Dureen; Douglas W. Stephan; Journal of the American Chemical Society 131 (2009) 8396–8397; doi:10.1021/ja903650w

data_4104590
_publ_section_title
;
 Terminal Alkyne Activation by Frustrated and Classical Lewis
 Acid/Phosphine Pairs
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8396
_journal_page_last               8397
_journal_paper_doi               10.1021/ja903650w
_journal_volume                  131
_journal_year                    2009
_chemical_formula_sum            'C44 H21 B F15 P'
_chemical_formula_weight         876.39
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_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                 103.055(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.5355(6)
_cell_length_b                   11.2841(4)
_cell_length_c                   19.4421(7)
_cell_measurement_reflns_used    9961
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      28.70
_cell_measurement_theta_min      2.38
_cell_volume                     3747.6(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.878
_diffrn_measured_fraction_theta_max 0.878
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0317
_diffrn_reflns_av_sigmaI/netI    0.0300
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            53136
_diffrn_reflns_theta_full        30.37
_diffrn_reflns_theta_max         30.37
_diffrn_reflns_theta_min         2.10
_exptl_absorpt_coefficient_mu    0.182
_exptl_absorpt_correction_T_max  0.9306
_exptl_absorpt_correction_T_min  0.8985
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.553
_exptl_crystal_description       block
_exptl_crystal_F_000             1760
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.40
_refine_diff_density_max         0.385
_refine_diff_density_min         -0.301
_refine_diff_density_rms         0.047
_refine_ls_extinction_coef       0.0007(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     551
_refine_ls_number_reflns         9931
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0530
_refine_ls_R_factor_gt           0.0360
_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^)+(0.0422P)^2^+1.1051P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0862
_refine_ls_wR_factor_ref         0.0941
_reflns_number_gt                7622
_reflns_number_total             9931
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja903650w_si_002_5.cif
_cod_data_source_block           Ph3PC(Ph)=C(H)B(C6F5)3
_cod_depositor_comments
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The following automatic conversions were performed:

'_refine_ls_hydrogen_treatment' value 'constrained' was replaced with
the value 'constr' as specified in the replacement file
'src/cod-tools/trunk/data/replacement-values/replacement_values.lst'.

Automatic conversion script
Id: cif_fix_values 5376 2017-05-30 11:51:03Z andrius 
;
_cod_database_code               4104590